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6 Troubleshooting and Test Procedure
SAM4S ER-5100 SERIES 6-3
1. Check/change the solder points and the connection harness of the
Window Display PCB.
2. Check the CN6 connection harness on the Main PCB.
3. Check/change the related circuits on the Main PCB.
4. Check the HV5812P and the Digitron on the Display PCB and Turret
PCB.
Front/Rear(Window/Turret)
Display Failure.
1. Check the key-locked status and the connector insertion in the lock.
2. Check the RA3 on the Main PCB.
Mode Key failure
1. Check the Cable connection with the CN18.
2. Check the solder points on Optional PCB (IC14,Q15 and Q16) and
the related circuits.
3. Check the Bead Wire between the Main PCB and the Optional PCB.
4. Do Loop Back Test with the male D-sub 9Pin connected pin #2 and
#3.
Serial 1,2(Optional)
Failure
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