Is it possible to refill the original cartridge? Original DEMO (starter) cartridges
With today's assortment of printing equipment from different manufacturers, the purchase of a modern printer or MFP is often accompanied by an unexpected problem, the essence of which is the difficulty, or even the impossibility, of refilling a cartridge of a certain brand and model. Such situations, although rare, do occur, and therefore it is better to prepare for them in advance and, if possible, avoid them.
Let's start with the fact that almost all modern consumables are equipped by the manufacturer with sophisticated electronic chips, thanks to which we not only know how much toner is left in the cartridge and what problems the printing device encounters, but also temporarily lose the opportunity to use refills. The fact is that refilling cartridges with chips usually means replacing the latter, or, alternatively, replacing the software in the printer itself. To do this, craftsmen create “correct” chips that do not interfere with refueling, and develop equally “correct” software, which are subsequently used by professional refuelers. However, both the first and second are reliably protected from copying by the manufacturer, so it takes some time to bypass this protection. Sometimes it is calculated in weeks, and sometimes in months. In this regard, when buying the latest model of printer or MFP, be prepared for the fact that refilling cartridges for them will be impossible at first, and you will have to shell out money for original consumables for some time.
Secondly, the ability to charge cartridges largely depends on the manufacturer of the printing device. For example, refilling cartridges from Canon, HP, Xerox, Samsung and other brands popular in our country usually does not cause difficulties for refillers (with the exception of the temporary problem with chips and software described above). At the same time, if you happen to acquire a printing device, say, Lexmark, Epson or Kodak, then it is far from a fact that in your city there will be craftsmen who can refill the cartridge for it with high quality. In other words, it is better not to buy such “exotic” products, especially since the range of truly high-quality printers without such associated problems is more than wide. Of course, if you look really hard, then in a big city you can always find a master from God who can refill even such a cartridge that he sees for the first time in his life, but why do you need this extra headache? We almost forgot: for such printing machines, which are rare in our latitudes, it can sometimes be extremely difficult to find even a new original cartridge for sale!
Starter cartridge - what is it? Refilling the starter cartridge
A starter cartridge, also known as a starter cartridge, is a cartridge that was sold to you complete with a printer or MFP. In general, to be honest, the purpose of a starter cartridge is to quickly run out and force the client to fork out for a new cartridge, which is no longer sold complete with the printer, but in a separate package. The practice is unscrupulous, but effective.
Therefore, as a rule, almost all starter cartridges contain much less toner (or ink) than cartridges sold separately. The difference can reach twofold or even fivefold. As a rule, the buyer finds out about this after the purchase: it is important for lively sellers to sell the device, and then “milk” the client, actually forcing him to buy new printed modules. It is useless to go anywhere or make a fuss about this: you have already purchased the product and choosing a different printer model will not make much difference; a set of a new printing device from another brand will also contain a starter cartridge with a rather symbolic amount of toner.
In this regard, the purchase of a new MFP or printer itself in any case entails future costs. We’ll give you a little advice right away: don’t fall for the cheap tricks of sellers who sell you the latest printer model. Why? You will be forced to buy a new cartridge almost immediately after purchasing the device. Since it will be impossible to refill the newest models for some time, since the system for blocking the operation of the device has not yet been studied in new models; compatible chips for the equipment models have not been developed; software changes to the internal firmware of the printer have not been worked out, according to which the cartridge can be refilled at all without chips, etc., etc.
Is it possible to refill the starter cartridge and for which models? Answer: almost everyone. Forum communities of cartridge refillers are a large collective mind; as soon as a new printer model appears on the market, thousands of people on the same day begin to puzzle over how to bypass one or another blocking of the device, which allows them to refill both the starting and newly purchased cartridges.
Is it worth refilling the starter cartridge at all?
See for yourself. One of the recently released printer models (we will not name which one, in order to avoid verbal disputes with manufacturers) on the Yandex Market is estimated at between 3,900 and 5,700 rubles. The starter cartridge for it runs out after 500 prints, and what matters is not the amount of toner transferred to the sheets, but any number of sheets passed along the paper path. Even if you print 500 sheets of information on the printer in the form of one printed character, the printer will be blocked! Let's look at the price of a new cartridge for the device: the average value is 4,000 rubles!
What happens? You bought a horse, but it turned out that its horseshoes are gold!
For C3100/C3200/C5200/C5250/C5400/C5450 printers, the answer to this question is no. The starter cartridge of these printers does not have a toner sensor that can tell the printer that the toner level is high. After using the starter kit, you must install purchased toner cartridges in the printer that have toner sensors. This does not apply to starter toners for the C5100 and C5300 printers (discontinued in the summer of 2004) - their starter cartridges were the same in design as regular ones (with a toner sensor), but only 30% of the total volume was filled with toner .
For printers of the new C3000 and C5000 series, as well as for A3 format printers (C8600/8800) in the starter toner cartridges of which there is neither a toner sensor nor a radio chip, refilling is possible, but only if the remaining toner as indicated by the printer is not less 10%. In this case, it is necessary to visually monitor the remaining powder in the cartridge in order to prevent the toner sensor located in the photodrum from triggering, which will immediately block the possibility of further printing with this color until the printer “sees” instead of the blocked cartridge a new one in which an RFID radio chip is installed .
In new OKI printer models, starting from C3450/C3600, C5650/C5750/C5850/C5950, C710, C810/C830, C9650/C9850, refilling toner is impossible, since the printer will be blocked strictly according to the counter reading, and not at all based on the fact that the sensor is triggered . This means there is a need to use an alternative option.
An alternative, of course, would be to install compatible chips in starter toner cartridges. There are places for installing the chip in some starter cartridges:
Having opened the lid, you just need to insert a compatible chip into the cavity behind it, which you can purchase, for example, here. However, most starter cartridges do not have a ready-made cavity for installing a chip. Accordingly, we either buy original cartridges once and then put a compatible chip in place of the old one, or simply glue it with tape on top of the starter cartridge strictly under the chip reader - a white plastic “box” located next to the LED line of each color on the printer lid.
Now about the compatible toner. The compatible toner produced by UninetImaging called Absolute Color Glossy, which also has a fairly stable quality, performs best when working with OKI color printers. This toner is more refractory than the original, so when printing with it, you need to manually set the paper weight in the driver to a level higher than the one actually used. This leads to the obvious conclusion that on paper of the maximum density allowed for the printer, fixing this toner may not be sufficient. This toner produces more waste than the original, so waste toner bins sometimes have to be cleaned out even between refills, and the number of pages that can be printed with each refill is noticeably reduced compared to the original toner. Thanks to the color calibration system built into the printer, the colors practically do not “go away” on a compatible toner, but the color gamut is narrowed, and the overall impression of the print, according to numerous reviews, is worse than that of a print made on the original (many people keep two sets of consumables (toners along with drums) - the original for critical printing and refilled for shooting or low-quality replication).
Please note that when refilling an OKI cartridge with toner, the remaining toner amount on the system counters DOES NOT CHANGE and continues to decrease with each page printed! The printer has nothing to evaluate the fact that there is a lot of toner in the cartridge - it distinguishes only one state: there is no toner. The only way to reset the toner remaining reading is to install a new chip during refilling! The only exceptions to this rule are older model printers that are refilled while the printer is in the Toner Low or Toner Empty state and only when using purchased (non-starter) cartridges. 
Another VERY important point. It is necessary to understand that the chemical composition of the original toner and the compatible toner differ quite noticeably. Therefore, if these two toners are mixed in the cartridge hopper due to refilling, the resulting mixture will have extremely unpredictable properties. This is most often expressed in the fact that a fairly noticeable gray and colored background appears on the prints, as well as stripes of all colors along the movement of the paper. To avoid this, BEFORE refilling, you must thoroughly clean the original toner from both the toner cartridge itself and the photo cartridge hopper and vacuum the container well! At the same time, you need to understand that when the printer stops with a request to replace the toner, there is quite a lot of original toner in the photo cartridge hopper, which is enough to print one to five thousand pages (depending on the model). All this powder will have to be thrown away (the most thrifty ones manage to collect the remaining toner and use it later). The refilling process itself is extremely simple: after removing the toner cartridge, you need to turn it upside down, turn the blue handle on the end as if you were closing it to secure it to the photo cartridge, and pour powder into the resulting window. 
On printers of the C3000, C5000, C7000, C700, C8000 and C800 series, the waste hopper must be cleaned when refilling. It is located directly in the toner cartridges and is a cavity insulated from the container with clean toner, which is entered from the side opposite the handle that locks the toner cartridge. At the end there is a hole covered with a lid. The lid can open either by turning the locking handle, or simply by pressing it (depending on the printer model). Note that this is the hole into which the tab on the photo cartridge fits when the toner cartridge is installed on the photo cartridge. The return of waste from the photo cartridge is carried out precisely through this protrusion: the toner is supplied to it from below using a toothed belt located in the side wall of the photo cartridge.
Let me summarize the above:
Starter cartridges for older models cannot be refilled - it is useless. Purchased toner cartridges from older models can be refilled without restrictions.
Starter cartridges for new models can be refilled, but only with the installation of a new chip. In most cases, the chip will need to be glued to the top of the cartridge (see chip placement locations). Purchased toner cartridges can also be refilled by replacing the chip, but it must be inserted into its original place instead of the used one.
Before refueling, be sure to clean the waste hopper!
Before refilling, be sure to clean the insides of both the toner cartridge and the photo cartridge from any remnants of the original toner!
And further. Let me remind you that the use of non-original toner terminates the company warranty and will serve as a reason for refusal to perform warranty service and repair the printer at official service centers. In addition, due to the slightly different physical properties of toner, its use may damage the gears in printer photo cartridges.
Resetting/resetting consumption counters, chips, fuses, refueling, increasing resources...
How are consumables counters reset? It depends on which counter you mean.
- Toner counter: is reset at the moment when the printer, which is in the toner empty state (see above), receives a signal from the toner sensor and this signal corresponds to a full cartridge. If the cartridge has a chip, then the toner counter is reset when a cartridge with a chip enters the printer, which contains information about 100% remaining resource (read: new cartridge or new chip).
- Drum counter: is reset at the moment when the printer, which is in the replace image drum state, when turned on, sends a pulse to the fuse located inside the photodrum cartridge being tested, and receives a response - “the fuse is present.” Then the printer supplies the fuse with a burning current (0.2A) and again checks for the presence of an unburned fuse. If the fuse is no longer present (burnt out - the circuit is open), the printer resets the counter. If there is a fuse (the circuit is closed), the printer displays an error: Service Call 150~153 (the specific number depends on the color: 150 - yellow, 151 - magenta, 152 - cyan, 153 - black);
- Conveyor belt counter: is reset at the moment when the printer, which is in the replace belt unit state, sends a pulse to the fuse located inside the transport belt and receives a response - “the fuse is present.” Then the printer supplies the fuse with a burning current (0.2A) and again checks for the presence of an unburned fuse. If the fuse is no longer present (burnt out - the circuit is open), the printer resets the counter. If there is a fuse (the circuit is closed), the printer displays the error: Service Call 154;
- Fuser counter: resets at the moment when the printer, which is in the replace fuser unit state, sends a pulse to the fuse located inside the fuser and receives a response - “the fuse is present.” Then the printer supplies the fuse with a burning current (0.2A) and again checks for the presence of an unburned fuse. If the fuse is no longer present (burnt out - the circuit is open), the printer resets the counter. If there is a fuse (the circuit is closed), the printer displays the error: Service Call 155.
To extend the life of consumables (photodrums, oven, transport belt) and reset their counters, you need to replace them (reinstall if these items were supplied with the printer) a ceramic fuse with a rating of 0.0625A (1/16A).
Where are the fuses and chips located on OKI color printer consumables?
Toner cartridges for color printers use radio chips (RFID chips), which should prevent these cartridges from being refilled. The radio chip contains information about the model for which it is suitable, the region for which the toner cartridge is intended and the OEM manufacturer (similar printers with a different brand). In addition, after each job, the printer records the current remaining toner in this chip (it is calculated by the printer depending on the filling of each printed sheet). When the printer initializes, this data is read and the printer displays the current toner remaining in its menu, test printout, and website. It is thanks to these chips that when partially used toner cartridges are installed in the printer, it shows the remaining toner in that particular tube. Please note that there is no physical toner level sensor in the cartridges! All information about the remaining resource is calculated by the printer and written to the chip of each of the 4 toner cartridges.
Other consumables - photo cartridges (EP cartridges, drum cartridges, etc.), fusers and transport belts use conventional fuses. These fuses are intended for only one purpose - to burn out at the moment when the consumable is installed in the printer for the first time and thereby reset the corresponding counter of this consumable in the printer. Accordingly, it is useful to know where all these intricacies are located and this article is just about that - where is the fuse for consumables and where is the chip located in OKI color printers. Since the placement of these elements differs in each series of models, we will consider them model by model:
C3300 / C3400 / C3450 / C3600 and MFP C3520MFP / C3530MFP
C5600 / C5650 / C5700 / C5750 / C5800 / C5850 / C5900 / C5950 and C5550MFP
C8600 / C8800 / C810 / C830 and MC860MFP MFP
C9600 / C9650 / C9800 / C9850 and C9750MFP / C9800MFP / C9850MFP
But first, a few general rules:
1. There are NO fuses in the starter (i.e., those included with the printer) photoconductors, ovens and transport belts! In some cases, the heater fuse contacts are not even plugged into the connector!
2. Starter toner cartridges (except for cartridges for C9600 / C9650 / C9800 / C9850 / C9750MFP / C9800MFP / C9850MFP) DO NOT have RFID chips and in most cases there is not even room to install them!
3. The rating of all fuses is the same - 1/16A or 0.0625A (62.5mA). Fuses of a higher rating CANNOT be used - the printer will not be able to burn them and it is quite possible that the fuse located on the engine board of the printer will burn out - replacing it is much more difficult! At a minimum, a fatal error with the corresponding number will appear (see the list of fatal errors).
4. If the fuse is “emulated” using wires connected to the following contacts in the printer using a circuit similar to this one: 
Reset circuit photo cartridge fuse for C9000 printer
Printers C3300 / C3400 / C3450 / C3600 and MFP C3520MFP / C3530MFP
Heater fuse (pins 11 and 12, not connected in the starter heater!)
Photo cartridge fuse
Placement chip in toner cartridge
Chip in toner cartridge
OKI C5600 / C5650 / C5700 / C5750 / C5800 / C5850 / C5900 / C5950 printers and C5550MFP MFP:
Heater fuse(left connector, 3 and 4 pins)
Photo cartridge fuse
Contacts in the printer that connect to the transport belt fuse
Location of the fuse in the transport belt
Location of the chip in the toner cartridge
Chip in toner cartridge
C8600 / C8800 / C810 / C830 printers and MC860MFP MFPs
Heater fuse (3rd and 4th contacts - two middle ones in a row of 6 contacts)
The locations of the contacts for the photo cartridge fuse, the chip in the toner cartridge and the fuse in the transport belt are similar to those used in the C5000 series printers (see above), so in order not to clutter the article with pictures I will not list them here.
C9600 / C9650 / C9800 / C9850 printers and C9750MFP / C9800MFP / C9850MFP MFPs
The heater connector on these printers is similar to that used in the C8000 series printers (see above) and the fuse connection contacts in it are the same, so I do not repeat the picture.
Photo cartridge fuse
Contacts in the printer that connect to the transport belt fuse
Location of the fuse in the transport belt
Location of the chip in the toner cartridge (under the color sticker)
Radio chip in toner cartridge
Refilling OKI cartridges
For OKI color printers, there are only 2 types of original toners (we mean the powder itself, not the cartridges!): regular toner and high-definition toner. Regular toner is used in all older models (those printers that did not have chips in the toner cartridges), the new high-definition toner is used in all new models (those whose toner cartridges are protected by chips - see above). According to the public, the most successful compatible toner for OKI color printers is Static Control Universal gloggy (OKIUNIV and OKIUNIV2)
and by a rather strange coincidence, this toner works equally well in both old and new printer models.
REFUELING VOIDS THE WARRANTY!!!
Refilling cartridges for OKI printers. Refilling instructions. Compatible toner for OKI. Left toner for OKI. How to refill OKI. Refill the cartridge with compatible toner. Restoration of OKI cartridges. Oka cartridges. Oka gas station. Refilling OKI color printers. Color toner. Chips for Oka. Unchipment.
Attention, we read to the end, we don’t draw any conclusions in the middle of the text - I assure you, it will be more expensive for yourself! Go!
For C3100/C3200/C5200/C5250/C5400/C5450 printers, the answer to this question is no. The starter cartridge of these printers does not have a toner sensor that can tell the printer that the toner level is high. After using the starter kit, you must install purchased toner cartridges in the printer that have toner sensors. This does not apply to starter toners for the C5100 and C5300 printers (discontinued in the summer of 2004) - their starter cartridges were the same in design as regular ones (with a toner sensor), but only 30% of the total volume was filled with toner .
For printers of the new C3000 and C5000 series, as well as for A3 format printers (C8600/8800) in the starter toner cartridges of which there is neither a toner sensor nor a radio chip, refilling is possible, but only if the remaining toner as indicated by the printer is not less 10%. In this case, it is necessary to visually monitor the remaining powder in the cartridge in order to prevent the toner sensor located in the photodrum from triggering, which will immediately block the possibility of further printing with this color until the printer “sees” instead of the blocked cartridge a new one in which an RFID radio chip is installed .
In new OKI printer models, starting from C3450/C3600, C5650/C5750/C5850/C5950, C710, C810/C830, C9650/C9850, refilling toner is impossible, since the printer will be blocked strictly according to the counter reading, and not at all based on the fact that the sensor is triggered . This means there is a need to use an alternative option.
An alternative, of course, would be to install compatible chips in starter toner cartridges. There are places for installing the chip in some starter cartridges: 
Having opened the lid, you just need to insert a compatible chip into the cavity behind it, which you can purchase, for example, here. However, most starter cartridges do not have a ready-made cavity for installing a chip. Accordingly, we either buy original cartridges once and then put a compatible chip in place of the old one, or simply glue it with tape on top of the starter cartridge strictly under the chip reader - a white plastic “box” located next to the LED line of each color on the printer lid.
Now about the compatible toner. The compatible toner produced by UninetImaging called Absolute Color Glossy, which also has a fairly stable quality, performs best when working with OKI color printers. This toner is more refractory than the original, so when printing with it, you need to manually set the paper weight in the driver to a level higher than the one actually used. This leads to the obvious conclusion that on paper of the maximum density allowed for the printer, fixing this toner may not be sufficient. This toner produces more waste than the original, so waste toner bins sometimes have to be cleaned out even between refills, and the number of pages that can be printed with each refill is noticeably reduced compared to the original toner. Thanks to the color calibration system built into the printer, the colors practically do not “go away” on a compatible toner, but the color gamut is narrowed, and the overall impression of the print, according to numerous reviews, is worse than that of a print made on the original (many people keep two sets of consumables (toners along with drums) - the original for critical printing and refilled for shooting or low-quality replication). Buy these.
Please note that when refilling an OKI cartridge with toner, the remaining toner amount on the system counters DOES NOT CHANGE and continues to decrease with each page printed! The printer has nothing to evaluate the fact that there is a lot of toner in the cartridge - it distinguishes only one state: there is no toner. The only way to reset the toner remaining reading is to install a new chip during refilling! The only exceptions to this rule are older model printers that are refilled while the printer is in the Toner Low or Toner Empty state and only when using purchased (non-starter) cartridges.
Another VERY important point. It is necessary to understand that the chemical composition of the original toner and the compatible toner differ quite noticeably. Therefore, if these two toners are mixed in the cartridge hopper due to refilling, the resulting mixture will have extremely unpredictable properties. This is most often expressed in the fact that a fairly noticeable gray and colored background appears on the prints, as well as stripes of all colors along the movement of the paper. To avoid this, BEFORE refilling, you must thoroughly clean the original toner from both the toner cartridge itself and the photo cartridge hopper and vacuum the container well! At the same time, you need to understand that when the printer stops with a request to replace the toner, there is quite a lot of original toner in the photo cartridge hopper, which is enough to print one to five thousand pages (depending on the model). All this powder will have to be thrown away (the most thrifty ones manage to collect the remaining toner and use it later). The refilling process itself is extremely simple: after removing the toner cartridge, you need to turn it upside down, turn the blue handle on the end as if you were closing it to secure it to the photo cartridge, and pour powder into the resulting window.
On printers of the C3000, C5000, C7000, C700, C8000 and C800 series, the waste hopper must be cleaned when refilling. It is located directly in the toner cartridges and is a cavity insulated from the container with clean toner, which is entered from the side opposite the handle that locks the toner cartridge. At the end there is a hole covered with a lid. The lid can open either by turning the locking handle, or simply by pressing it (depending on the printer model). Note that this is the hole into which the tab on the photo cartridge fits when the toner cartridge is installed on the photo cartridge. The return of waste from the photo cartridge is carried out precisely through this protrusion: the toner is supplied to it from below using a toothed belt located in the side wall of the photo cartridge.
Let me summarize the above:
And further. Let me remind you that the use of non-original toner terminates the company warranty and will serve as a reason for refusal to perform warranty service and repair the printer at official service centers. In addition, due to the slightly different physical properties of toner, its use may damage the gears in printer photo cartridges.
Resetting/resetting consumption counters, chips, fuses, refueling, increasing resources...
How are consumables counters reset? It depends on which counter you mean.
- Toner counter: is reset at the moment when the printer, which is in the toner empty state (see above), receives a signal from the toner sensor and this signal corresponds to a full cartridge. If the cartridge has a chip, then the toner counter is reset when a cartridge with a chip enters the printer, which contains information about 100% remaining resource (read: new cartridge or new chip).
- Drum counter: is reset at the moment when the printer, which is in the replace image drum state, when turned on, sends a pulse to the fuse located inside the photodrum cartridge being tested, and receives a response - “the fuse is present.” Then the printer supplies the fuse with a burning current (0.2A) and again checks for the presence of an unburned fuse. If the fuse is no longer present (burnt out - the circuit is open), the printer resets the counter. If there is a fuse (the circuit is closed), the printer displays an error: Service Call 150~153 (the specific number depends on the color: 150 - yellow, 151 - magenta, 152 - cyan, 153 - black);
- Conveyor belt counter: is reset at the moment when the printer, which is in the replace belt unit state, sends a pulse to the fuse located inside the transport belt and receives a response - “the fuse is present.” Then the printer supplies the fuse with a burning current (0.2A) and again checks for the presence of an unburned fuse. If the fuse is no longer present (burnt out - the circuit is open), the printer resets the counter. If there is a fuse (the circuit is closed), the printer displays the error: Service Call 154;
Fuser counter: resets at the moment when the printer, which is in the replace fuser unit state, sends a pulse to the fuse located inside the fuser and receives a response - “the fuse is present.” Then the printer supplies the fuse with a burning current (0.2A) and again checks for the presence of an unburned fuse. If the fuse is no longer present (burnt out - the circuit is open), the printer resets the counter. If there is a fuse (the circuit is closed), the printer displays the error: Service Call 155.
Where are the fuses and chips located on OKI color printer consumables?
Toner cartridges for color printers use radio chips (RFID chips), which should prevent these cartridges from being refilled. The radio chip contains information about the model for which it is suitable, the region for which the toner cartridge is intended and the OEM manufacturer (similar printers with a different brand). In addition, after each job, the printer records the current remaining toner in this chip (it is calculated by the printer depending on the filling of each printed sheet). When the printer initializes, this data is read and the printer displays the current toner remaining in its menu, test printout, and website. It is thanks to these chips that when partially used toner cartridges are installed in the printer, it shows the remaining toner in that particular tube. Please note that there is no physical toner level sensor in the cartridges! All information about the remaining resource is calculated by the printer and written to the chip of each of the 4 toner cartridges.
Other consumables - photo cartridges (EP cartridges, drum cartridges, etc.), fusers and transport belts use conventional fuses. These fuses are intended for only one purpose - to burn out at the moment when the consumable is installed in the printer for the first time and thereby reset the corresponding counter of this consumable in the printer. Accordingly, it is useful to know where all these intricacies are located and this article is just about that - where is the fuse for consumables and where is the chip located in OKI color printers. Since the placement of these elements differs in each series of models, we will consider them model by model:
C3300 / C3400 / C3450 / C3600 and MFP C3520MFP / C3530MFP
C5600 / C5650 / C5700 / C5750 / C5800 / C5850 / C5900 / C5950 and C5550MFP
C8600 / C8800 / C810 / C830 and MC860MFP MFP
C9600 / C9650 / C9800 / C9850 and C9750MFP / C9800MFP / C9850MFP
But first, a few general rules:
1. There are NO fuses in the starter (i.e., those included with the printer) photoconductors, ovens and transport belts! In some cases, the heater fuse contacts are not even plugged into the connector!
2. Starter toner cartridges (except for cartridges for C9600 / C9650 / C9800 / C9850 / C9750MFP / C9800MFP / C9850MFP) DO NOT have RFID chips and in most cases there is not even room to install them!
3. The rating of all fuses is the same - 1/16A or 0.0625A (62.5mA). Fuses of a higher rating CANNOT be used - the printer will not be able to burn them and it is quite possible that the fuse located on the engine board of the printer will burn out - replacing it is much more difficult! At a minimum, a fatal error with the corresponding number will appear (see the list of fatal errors).
4. If the fuse is “emulated” using wires connected to the following contacts in the printer using a circuit similar to this one: 
Printers C3300 / C3400 / C3450 / C3600 and MFP C3520MFP / C3530MFP
Heater fuse (pins 11 and 12, not connected in the starter heater!)
Photo cartridge fuse
Location of the chip in the toner cartridge
Chip in toner cartridge
OKI C5600 / C5650 / C5700 / C5750 / C5800 / C5850 / C5900 / C5950 printers and C5550MFP MFP:
Heater fuse (left connector, 3 and 4 contacts)
Photo cartridge fuse
Contacts in the printer that connect to the transport belt fuse
Location of the fuse in the transport belt
Location of the chip in the toner cartridge
Chip in toner cartridge
C8600 / C8800 / C810 / C830 printers and MC860MFP MFPs
Heater fuse (3rd and 4th contacts - two middle ones in a row of 6 contacts)
The locations of the contacts for the photo cartridge fuse, the chip in the toner cartridge and the fuse in the transport belt are similar to those used in the C5000 series printers (see above), so in order not to clutter the article with pictures I will not list them here.
C9600 / C9650 / C9800 / C9850 printers and C9750MFP / C9800MFP / C9850MFP MFPs
The heater connector on these printers is similar to that used in the C8000 series printers (see above) and the fuse connection contacts in it are the same, so I do not repeat the picture.
Photo cartridge fuse
Contacts in the printer that connect to the transport belt fuse
Most manufacturers supply printers and MFPs with starter cartridges.
The starter cartridge holds fewer print sheets than the standard cartridge, which is sold separately.
It is important to remember that the toners in the starter cartridge are designed only to start the device, that is, so that when installing the device, only the first tens of pages can be printed. For uninterrupted operation of the device, it is better to immediately buy standard consumables. The presence or absence of a starter kit depends on the manufacturer's sales policy.
DESCRIPTION OF STARTER CARTRIDGE CB435A HP LJ P1005/P1006 Cartridge
The CB435A starter cartridge has approximately half the volume of the waste hopper.
Toner weight in 700 page starter cartridge is 47.6 g
DESCRIPTION OF CARTRIDGE CB435A HP LJ P1005/P1006 Cartridge
Number of pages (b/w): 1500 standard pages
case with dimensions 327x123x113 mm
relatively light weight of 793 g and resource capacity of the toner bin.
DESCRIPTION OF STARTER CARTRIDGE CB436A HP LJ P1505/M1120/M1522 cartridge.
The squeegee has installation dimensions that differ from other HP models. The squeegee base has a significantly smaller width.
The waste hopper has a very small volume, so transfer efficiency is of great importance when selecting compatible consumables. The approximate capacity of the hopper is 10 g of waste.
The diameter of the charge roller is the same as in HP CLJ2600,3000 cartridges (diameter - 8.5 mm, circumference - 27 mm), but the length is shorter (244 mm). The roller is made of hard material, i.e. “indestructible” and can be easily cleaned with isopropyl alcohol. It is quite possible that, just as in color cartridges with similar rollers, there will also be “soft” rollers that are more prone to failure.
The magnetic shaft has dimensions: diameter – 10 mm, circumference – 31 mm, shaft length – 254 mm. The metering blade has different mounting dimensions than other HP models.
DESCRIPTION OF CARTRIDGE CB436A HP LJ P1505/M1120/M1522 cartridge.
The HP cb436A cartridge yields 2,000 pages at 5% page coverage.
The dimensions of the 36A cartridge are 370x123x113 mm.
The 36A cartridge weighs just under a kilogram - 830 g.
The main difference between a starter cartridge and a regular one is the volume of the toner tank. And also, if you pay attention to the photo of the HP 436 starter cartridge, its platform is wider than the platform of an ordinary HP 436 cartridge.