Kyocera TASKalfa 2551ci, Service Manual

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2NP
2-2-2
1. Main PWB (MPWB) .............................. Controls the software for print data processing and provides the
interface with computers.
2. Engine PWB (EPWB)............................ Controls printer hardware such as high voltage/bias output con-
trol, paper conveying system control, and fuser temperature con-
trol, etc.
3. High voltage PWB (HVPWB) ................ Generates main charging, developing bias, secondary transfer
bias and separation bias.
4. High voltage PWB sub (HVPWB-S)...... Generates primary transfer bias, cleaning bias.
5. Power source PWB (PSPWB) .............. After full-wave rectification of AC power source input, switching
for converting to 24 V DC for output. Controls the fuser heater.
6. Operation panel PWB main
(OPPWB-M) .......................................... Consists of the LCD, LED indicators and key switches.
7. Operation panel PWB sub
(OPPWB-S)........................................... Consists of the LED indicators and key switches.
8. LCD (LCD) ............................................ LCD display.
9. Touch panel (TP)................................... Operates the operation panel.
10. ISC PWB (ISCPWB) ............................. Controls the scanner section.
11. LED PWB (LEDPWB) ........................... Exposes originals.
12. APC PWB (APCPWB) .......................... Generates and controls the laser beam.
13. BD PWB (BDPWB) ............................... Controls horizontal synchronizing timing of laser beam.
14. Drum connect PWB (DRCPWB) ........... Consists of wiring relay circuit between engine PWB and the
drum unit.
15. Drum PWB Y (DRPWB-Y) .................... Relays wirings from electrical components on the drum unit for
yellow.
Stores the drum's identifications a EEPROM.
16. Drum PWB C (DRPWB-C).................... Relays wirings from electrical components on the drum unit for
cyan.
Stores the drum's identifications a EEPROM.
17. Drum PWB M (DRPWB-M) ................... Relays wirings from electrical components on the drum unit for
magenta.
Stores the drum's identifications a EEPROM.
18. Drum PWB K (DRPWB-K) .................... Relays wirings from electrical components on the drum unit for
black.
Stores the drum's identifications a EEPROM.
19. Developer PWB Y (DEVPWB-Y) .......... Relays wirings from electrical components on the developing unit
for yellow.
Stores the developer's identifications a EEPROM.
20. Developer PWB C (DEVPWB-C) .......... Relays wirings from electrical components on the developing unit
for cyan.
Stores the developer's identifications a EEPROM.
21. Developer PWB M (DEVPWB-M) ......... Relays wirings from electrical components on the developing unit
for magenta.
Stores the developer's identifications a EEPROM.
22. Developer PWB K (DEVPWB-K) .......... Relays wirings from electrical components on the developing unit
for black.
Stores the developer's identifications a EEPROM.
23. RFID PWB (RFPWB) ............................ Reads the container information.
24. LSU connect PWB (LSUCPWB) ........... Consists of wiring relay circuit between engine connect PWB and
LSU unit.
25. Engine connect PWB (ECPWB) ........... Consists of wiring relay circuit between engine PWB and drum
connect PWB, transfer connect PWB, option unit.
26. Option connect PWB (OPCPWB) ......... Consists of wiring relay circuit between key card, key counter and
engine PWB.
27. IH PWB (IHPWB) .................................. Controls the temperature of the fuser unit.