Canon FAX-L350, Service Manual

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FAX-L350 Chapter 3: Maintenance and Service
d) New error codes and recovery methods
There is no new error code in this model.
Note, however, the following supplementary information, as the machine requires different actions than
the existing models to correct:
##322 [TX/RX] Fixing heater temperature abnormality
Cause: Internal unit defect.
Solutions: (1) Check the connections between the fixing ass’y and the PCNT board (J2) and
between the fixing ass’y and the power supply unit (J102).
(2) Check the connection between the PCNT board (J403) and the power supply unit
(J202).
(3) Check the resistance between connector pins of the fixing ass’y.
J203-12 and J203-13: 790 to 212 ký (at 10 ~ 35°C)
J102-1 and J102-2: 120.9 to 139.1 ý (at 25°C)
If either resistance is incorrect, replace the fixing ass’y.
(4) Check the voltage at J102 of the power supply unit (with the heater cable TB1
removed); if it is not the same as the AC input voltage, replace the power supply
unit.
(5) Replace the PCNT board.
(6) Replace the SCNT board.
##323 [TX/RX] LASER/scanner section BD signal output abnormal
Cause: Internal unit defect (Low LASER intensity)
Solutions: (1) Check the connection between the LASER/scanner section (J801) and the SCNT
board (J502).
(2) Replace the LASER/scanner section.
(3) Replace the SCNT board.
Cause: Internal unit defect (BD signal timing error)
Solutions: (1) Check the connection between the LASER/scanner section (J801) and the SCNT
board (J502).
(2) Replace the LASER/scanner section.
(3) Replace the SCNT board.
##324 [TX/RX] Printer section scanner motor rotation rate abnormal
Cause:
Internal unit defect (Incorrect scanner motor speed)
Solutions:
(1) Check the connection between the LASER/scanner section (J1) and the SCNT
board (J502).
(2) Replace the LASER/scanner section.
(3) Replace the SCNT board.
##335 [TX/RX] Data communication error between system control section and printer
control section
Cause: Internal unit defect
Solutions: (1) Check the connections between the PCNT board (J1) and the SCNT board (J3)
and between the SCNT board (J2) and power supply unit (J201).
(2) Replace the SCNT board.
(3) Replace the PCNT board.
(4) Replace the power supply unit.