Troubleshooting
7 - 21
OKIFAX 5300/5600
Service Manual, P/N 59278301
7.1.16 No Acoustic Line Monitor
There are two source routes of acoustic line monitor:
(a)
General communication signal
(b)
DP pulse signal
Start
No
MONITOR CONTROL
(Technical function No. 02)
has been set to OFF?
Replace M17-x Board.
The signal appears?
Replace the speaker.
Connect oscilloscope probe
across CN8-01 (SP) and
CN8-02 (AG).
MONITOR VOLUME
(Function program No. 06)
has been set to
LOW or HIGH?
Set MONITOR VOLUME
to LOW or HIGH.
No (ON)
Yes
Yes
Yes (OFF)
Set it to ON.
A message can be
received normally?
Go to 7.1.9.
(Reception problem)
No
Yes
Signal route (R):
CN6-A6, B6
→
IC12-1 (RM)
→
TR1-2
→
IC11-3
→
IC11-5
No
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...