This PCB works as the controller of the machine's printer functions and engine.
LED status
| Address | Color | LED status |
|---|---|---|
| LED1 | Yellow green | Flashing: Engine is functioning normally. Unlit/Lit: Other than the above |
| LED3 | Red | Lit: +5 VX input Unlit: Other than the above |
| LED4 | Red | Lit: +5 V input Unlit: Other than the above |
| LED5 | Yellow green | Lit: +3.3 V input Unlit: Other than the above |
| LED6 | Red | Lit: +5 VE input Unlit: Other than the above |
| LED7 | Yellow green | Lit: Other than the described below. Unlit: CTL is functioning normally. |
Fuse condition
| Name | Rating | Connected to | When fuse is blown | |
|---|---|---|---|---|
| Cause | Error display | |||
| FU1 | 0.5A | REG1 (+5V -> +3.3V) | PCB malfunction | SC display |
| FU2 | 0.5A | IC19:DCDC (+5V -> +1.2V) | PCB malfunction | SC display |
| FU3 | 1A | CN217 Connected to SDCU (Vodka) | PCB malfunction, Ground fault of a cable | - |
| FU4 | 1A | CN216 Connected to SDCU (HORUS) | PCB malfunction Ground fault of a cable | - |
| FU5 | 0.5A | IC25:DCDC (+5V -> +1.1V) | PCB malfunction | SC display |
| FU6 | 1.5A | CN216 Connected to SDCU (HORUS) | PCB malfunction Ground fault of a cable | - |
| FU7 | 0.5A | IC34:Power IC for DDR3 | PCB malfunction | SC display |
| FU8 | 0.5A | IC46:DCDC (+5 VX -> +1.8VE) | PCB malfunction | Machine does not start normally, operation panel frozen |
| FU9 | 0.5A | IC43: Power IC for DDR4 | PCB malfunction | Machine does not start normally, operation panel frozen |
| FU10 | 1.5A | CN214 Connected to the operation panel | PCB malfunction, Ground fault of a cable | Operation panel does not work |
| FU11 | 0.5A | IC48:DCDC (+5V -> 1.8V) | PCB malfunction | SC display |
| FU12 | 0.5A | IC49:Power switch IC (+5VX -> +5VE) | PCB malfunction | Machine does not start normally, operation panel frozen |
| FU13 | 0.5A | REG2 (+5V -> +2.5V) | PCB malfunction | SC display |
| FU14 | 0.65A | REG3 (+5VX -> +2.5VE) | PCB malfunction | Machine does not start normally, operation panel frozen |
| FU15 | 0.65A | IC58:DCDC (+5VX -> 1.05VE) | PCB malfunction | Machine does not start normally, operation panel frozen |
| FU16 | 1.5A | PCB (Reset circuit etc.) | PCB malfunction | SC display |
| FU17 | 1.5A | IC40 IC114:Reset IC Power controller IC | PCB malfunction | Machine does not start normally |
| FU18 | 0.5A | IC64:DCDC (+5VX -> 1.0VE) | PCB malfunction | Machine does not start normally, operation panel frozen |
| FU19 | 0.5A | REG4 (+5VX -> +3.3VE) | PCB malfunction | Machine does not start normally, operation panel frozen |
| FU20 | 0.75A | CN201 Connected to SD card | PCB malfunction | SD card is not recognized. |
| FU21 | 0.5A | CN218 Carriage Home Position Sensor Sub Scan Encoder Sensor | PCB malfunction, Ground fault of a cable, Sensor/switch malfunction | SC display, Cover open/close condition not recognized |