Part 4: Technical Reference |
4.2Logic
4.2.1Logic block diagram
Address Bus
Address Data Bus
Parallel
Interface
Error Indicator
Power Indicator
DRAM (IC5)
| |
I/O0 | A0 |
to | to |
I/O7 | A9 |
DRAM
Data
Bus
DRAM
Address
Bus
I/O0 | A0 |
to | to |
I/O7 | A9 |
DRAM (IC6)
DBUS0 | ABUS1 |
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| D0 | A11 | D0 | A0 | |
to |
| to |
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| to | to | to | to |
DBUS15 | ABUS20 | RD |
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| RD |
| D15 | A30 | D15 | A18 | |
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| INIT0 to INIT3 |
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| INIT0 to INIT3 | RD | OE |
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| RESET | Reset IC |
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| RESET |
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| CS0 | CE |
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Printer |
| 20MHz |
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| MPU | Control | ||||
Controller |
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| ROM |
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| (IC2) |
| Paper End |
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| P104 | (IC1) |
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| (IC3) |
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LED0 |
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| Sensor |
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to |
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| Pickup Roller |
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| P103 |
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LED2 |
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| Sensor |
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| 2kbit |
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| Purge Sensor |
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| P102 |
| TA04,TA05 | EEPROM | ||
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| P137, | TA10,TA11 | ||||
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| IP0 | Driver IC |
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| TA12 to TA15 |
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| Transistor | Buzzer | |||
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| Paper Feed | PM |
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| P105 |
| BZ |
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| IP1 | Motor |
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| PWMA, | Driver IC |
| T00 to T03 |
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| PWMB |
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| P155 | POWER button | |
RAMB0 |
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| Carriage |
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| PM |
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to |
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| Motor |
| P144 to P147 |
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RAMB15 |
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| P156 | RESUME button | ||||||
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| P73 to P75,T0 | |||||
RAMA0 |
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| AN6 |
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to |
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| AN7 |
| P157 | REPLACE button | |||
RAMA9 |
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| P101 |
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RANKOM | BE0 to 2 |
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| ID1OM |
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RANKBK | IDATAOM | INKOUT |
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| ID1BK |
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RANKPH | IDATABK |
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| ID1PH |
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RANKCL | IDATAPH |
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| ID1CL |
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| IDATACL | Detection | Printer |
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| Home | ID2OM |
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| EVENE |
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| ID2BK |
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| Circuit |
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| ODDE | Temperature | Position | ID2PH |
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| HEATEOM | ANT,PHANT |
| Sensor |
| Sensor | ID2CL |
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| HEATEBK |
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HEATEPH
HEATECL | Carriage Board | |
LTCLK | ||
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LTRST |
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BJ Cartridge