Paper Feeding System Related Service Call - Toshiba e-STUDIO165 Service Manual

5.1.6

Paper feeding system related service call

[C04] PFP motor is abnormal
Is the PFP motor working? (Perform the output check in the test mode: 04-109/159)
l NO
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
YES
Is the LED on the PFP motor board lit without flickering?
l NO
l
l
l
l
l
l
YES
1) Check if the PLL lock signal CN246-8 output from the PFP board is always "L" level.
2) Check if the voltage supplied to the microcomputer input terminal IC5-17 is always "L"
level.
3) Replace the PFP board.
4) Replace the MAIN board.
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1) Check if the signal line connector CN503 of the PFP motor is discon-
nected.
2) Check if the power line connector CN502 of the PFP motor is discon-
nected.
3) Check if the connector CN246 on the PFP board is disconnected.
4) Check if the signal line connector CN241 on the PFP board is discon-
nected.
5) Check if the power line connector CN242 on the PFP board is dis-
connected.
6) Check if the connector CN13 on the MAIN board is disconnected.
7) Check if the connector pins are disconnected and the harnesses are
open circuited.
8) Check if the conductor patterns on the PFP motor board, PFP board
and MAIN board are short circuited or open circuited.
9) Replace the PFP motor.
10)Replace the PFP board.
11)Replace the MAIN board.
1) Check if the connector pins are disconnected and the harnesses are
open circuited.
2) Check if the conductor patterns on the PFP motor board, PFP board
and MAIN board are short circuited or open circuited.
3) Replace the PFP motor.
4) Replace the PFP board.
5) Replace the MAIN board.
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TROUBLESHOOTING
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