Epson C82310/11 (Parallel I/F) Manual de servicio descargar pdf (Pagina 45)

SERVICE MANUAL MASTER FILE

ENGLISH

Rev. A (1997/05/07)

3-14

Table 3-9. Repair of the C229MAIN (continued)

Symptom

Condition Cause Checkpoint Solution

The printer

dose not

operate at

all.

The CPU

dose not

operate.

The CPU is

defective.

Verify the oscillator signal at pin 26

or 27 of the CPU (IC3).

Figure 3-17. Clock Signal of CPU

Replace the

C229MAIN

board.

The carriage

operates

abnormally.

The carriage

dose not

operate at

all.

IC8 is

defective.

Verify the CR motor phase control

signals at pin 5, 6, 16,17, and motor

drive signals at pin 1, 8, 11, 18 of

IC8.

Pin 5 of IC8

Pin 1, of IC8

Figure 3-18.

CR Motor Control Signal

Replace the

C229MAIN

board.

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 103 104

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