WILLETT 430 - Fault Finding; Printer Fails to Initialise

430 Ink Jet Printer Service and Maintenance Manual
146
Issue 2
Part No. 306-0430-102
Fault Finding
Printer Fails to Initialise
Possible Cause Remedial Action
No mains supply Check that mains supply is available and switched on.
Mains input cable disconnected or
faulty
1
Check that mains input cable is connected.
2
Check continuity of cable. Repair or replace if faulty.
Printer mains fuse(s) failed Check the fuses. Replace if necessary.
Mains inlet connector faulty Check the mains inlet connector for continuity. Replace if faulty (see
Mains Inlet Connector
, page 119).
Cable between inlet connector and
mains switch is disconnected or
faulty
1
Check cable connections, reconnect if necessary.
2
Check cable for continuity. Replace if faulty.
Faulty mains switch Check mains switch for continuity. Replace if faulty (see
Mains Switch
,
page 120).
Cable between mains switch and
PSU is disconnected or faulty
1
Check cable connections. Reconnect if necessary.
2
Check cable for continuity. Replace if faulty.
PSU faulty or PSU output not
reaching the I/O board
1
Check LEDs 1, 2 (dim or bright), 3, 4 and 5 on I/O board
(see
I/O Board Mk 2 TP Location
, page 72).
2
If any LED is extinguished go through steps
9
to
11
in that order.
Cable between PSU and I/O board
is faulty or disconnected
1
Check that cable is connected. Reconnect if necessary.
2
Check cable for continuity, replace if faulty.
PSU fuse failed Check fuse, replace if necessary
(see
PSU Module Fuse Replacement
, page 114).
PSU faulty Replace PSU (see
Power Supply Unit
, page 113).
I/O or CPU board failed
1
Check that LEDs 1, 2 (dim or bright), 3, 4 or 5 on I/O board are
illuminated (see
I/O Board Mk 2 Status LED Location
, page 72).
2
Change I/O board (see
I/O Board
, page 110). If fault remains then
change CPU board (see
CPU Board
, page 112).
Note: LED2 on the I/O board has a clear lens that glows red when illuminated.
Table 39 Printer Fails To Initialise