Troubleshooting
7 - 28
OKIFAX 5300/5600
Service Manual, P/N 59278301
Action Items (16 - 17)
No.
ACTION
16 Check item 1:
Check the PWM waveform of CH (cycle: 42
µ
s, ON time: 36
µ
s).
17 Probable cause 1: D1 is detective.
Check item 1:
Check if both D1 and T1 or D1 and T2 are shorted.
Probable cause 2: The D1 drive circuit is defective.
Check item 2:
Check PC1. [Whether PC1 turns ON or OFF according to the level of HEAT
signal (CN3-B7)?]
Check if R2 or R3 is in open state (This cannot be observed from the
external appearance because these resistors are fusible resistor.)
Summary of Contents for OF5600
Page 376: ...Illustrated Parts List D 2 OKIFAX 5300 5600 Service Manual P N 59278301 1 Cabinet Assembly...
Page 388: ...Illustrated Parts List D 14 OKIFAX 5300 5600 Service Manual P N 59278301 5 Scan Unit...
Page 394: ...Illustrated Parts List D 20 OKIFAX 5300 5600 Service Manual P N 59278301 8 Option Telephone...
