KX-P7100
4 Electronic Circuit Description and Diagrams
4.1.Block Diagram
USB
Parallel
Power Supply Unit |
|
|
|
| Fuser Unit | ||
|
|
|
| Heat Lamp | Thermister | ||
|
| Fuser Driver |
| ||||
|
|
|
|
|
| Thermal |
|
| +24V |
|
|
|
| Fuse |
|
|
|
|
|
|
|
| |
Rectifier |
| High Voltage Supply | Thermostat |
|
| ||
Noise |
|
|
| ||||
Filter |
| +24V IR |
| High Voltage |
| TH |
|
Thermistor |
| nCHGCTL |
|
|
| ||
|
| Circuit | DEV BIAS |
|
| ||
|
|
|
|
|
| ||
|
|
|
|
|
|
| |
|
| nDBCTL |
|
|
|
| Toner |
Voltage Control | +5V | nTRCTL |
|
|
|
| Box |
|
|
|
|
| |||
|
|
| Grid Voltage | OPC |
| ||
Circuit |
|
|
| TE_LED |
| ||
Voltage |
| nDB |
| Charger | Drum |
| |
|
|
|
| ||||
Detector |
| nTR |
|
| Current |
|
|
|
|
|
|
|
| ||
| Front Door |
|
| Transfer (+, - 2 way) | Developer | ||
|
|
|
| ||||
| Interlock Switch |
|
|
|
|
|
|
|
|
|
| Main Control Board |
|
|
|
| FAN | OPC Drum Unit | |||||
|
|
|
|
|
|
|
| ERR | FANERR |
| |||||
D+ |
| IC5 |
|
|
|
|
|
|
|
|
|
| FAN | FAN | |
| 12MHz Clock |
|
|
|
| GND | +5V | +24V | +24V IR | Control Circuit | |||||
D- |
|
|
|
| +24V IR |
| FANPWR |
| |||||||
|
|
|
|
| Temp. Limit |
|
|
| FANCTL | OPC Drum Unit |
| ||||
| Bridge Chip |
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
| Cotrol |
|
|
|
|
|
|
|
|
|
|
| Interlock Switch |
|
|
|
|
|
|
|
|
|
| Fuser |
|
|
|
|
| |
|
| Signals |
|
|
|
|
|
|
|
|
|
| +5V |
| |
|
|
|
|
| TH from Thermister |
|
| Control |
|
|
|
| |||
|
| IC6 | 53.84MHz |
|
|
|
|
|
| PUNIT |
| ||||
|
|
|
|
|
|
| nFSRCTL | Circuit |
| HV Driver |
|
| |||
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
| Dot Clock |
|
|
|
|
|
|
|
|
|
|
| |
Signals |
|
| Video Signals |
|
|
|
|
|
|
|
|
| |||
| 13.46 MHz x 4 | nVIDEO |
|
|
|
| APC | nHSYNC |
| ||||||
| Cotrol |
|
|
|
|
|
|
|
|
| |||||
|
| Conv. |
|
|
|
| nHSYNC |
|
|
|
|
| +5V IR |
| |
Data |
| Signals |
|
|
|
|
|
|
|
|
|
| Controller | nVIDEO | LD |
| TTL |
|
|
|
|
|
|
|
|
|
| KME_ASIC | nLDENB | Driver | |
|
| ASIC1 | IC3 |
|
|
|
|
|
|
| nADJUST |
| |||
|
|
|
|
|
|
|
|
| IC6 |
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
| +24V IR |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
| TTL | Parallel | Video |
| +24V IR |
| TH |
|
|
| SNRCLK |
|
| |
|
|
|
|
|
|
|
|
|
| ||||||
Print Data | I/F | I/F |
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
| DOPEN | IC11 |
| nSNRCNT |
|
| ||||
Status Data |
|
|
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
| LSU | |||||
|
|
| Decomp. Circuit | Arbitor | Exit |
|
| IC9 |
|
|
| nSNRLK |
| ||
|
|
|
|
|
| Direct |
|
| CPU |
| +24V |
|
| ||
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
| Comm. nPRDY |
|
|
|
| PUCTL |
|
| ||
DRAM2MB | x1MW16bit | TTL | DRAM Controller | MPUDMA |
|
| PPRDY | nTOP | nPURGE |
|
|
| Pick Driver |
|
|
I/F |
|
| EEPCS |
|
|
|
|
|
| ||||||
|
|
|
|
| I/O |
| nPRINT |
|
|
|
| +24V | Pick Solenoid | ||
|
|
|
|
|
|
|
|
|
|
|
| REGCTL |
|
| |
|
|
|
|
|
| nRST |
|
|
|
|
|
| Regist Driver |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
| IC12 | EEPCLK |
|
|
| +24V | Regist Solenoid | ||
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| EEPROM |
| EEPDO |
| EXITCTL |
| Exit Driver |
|
|
|
|
| |||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 2 k bit |
| EEPDI |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||
Data Selector |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ROM | REF CTL |
|
|
|
|
|
|
| +24V IR |
| Switchback Solenoid | |||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Serial |
|
|
|
|
|
|
|
|
| 16KB |
|
|
|
|
|
|
|
|
| |||||||||||||||||||||||||
& |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Comm. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||
DRAM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| nCS | Stepping2ch ControllerMotor |
|
|
| A |
|
| IC4Bipoler Driver |
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| SXD |
|
|
|
|
|
|
|
|
|
|
|
| CH1 |
|
|
|
|
|
|
| ||||||||||||||
Generater |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| PSAVE |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||
| IC6 |
|
| CPU | IC1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| CCLK |
|
|
|
|
|
|
|
|
| RAM | SCK2 |
|
|
|
|
| A |
|
|
|
|
|
| M | |||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| SO2 |
|
|
|
|
| B |
|
|
|
|
|
| |||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 512 Byte |
|
|
|
|
|
|
|
|
|
| |||||||||||||||
|
|
|
|
|
|
| ROM 4KB |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| nSBSY |
|
|
|
|
|
|
|
|
|
|
| SI2 |
|
|
|
|
| B |
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| nCBSY |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
| RAM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| CH2 |
|
|
|
|
|
|
|
|
|
|
| ||
12MHz |
|
|
| 128 BYTE |
|
|
|
|
|
|
|
|
|
|
|
| CXD |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| to USB Chip |
|
|
|
|
|
|
|
|
|
|
|
| IC6 |
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||
|
|
|
|
|
| RST |
|
|
| nRST |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 12MHz |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 12MHz Clock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| IC6 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| IC10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
| LED Driver |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| RESET IC |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| nREGSEN |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| nTOPSEN |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| nEXITSEN |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Top | Registration |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||||||||||||
|
|
|
|
| Indicator Board |
| Sensor |
| Sensor |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Toner Empty |
|
|
| |||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| (TE) Sensor |
|
|
| ||||||||||||||||||||||||||||||
| Ready Error | Toner/Process | Switch |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exit |
|
|
|
| TESEN |
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Sensor |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
49
