
288
R E P 1 6 4 0
Model Name:
RJ–4100
R E P 1 6 4 0
Model Name:
RJ–4100
How to Check the Power Supply Voltages/5 V DC
How to Check the Power Supply Voltages/5 V DC
1. Turn off the power switch and open the Control Box.
(The power cable may remain connected.)
2. With Power Board connector J003 disconnected, turn on the Power Switch and
check that +5 V ±0.5 V is being output between pins 2 and 1 of J003.
If not, take the following steps to identify the cause:
→
Go to REP1630 (How to Check the Power Supply Voltages/100 V AC or 200 V
AC)
→
If the 100 V AC or 200 V AC check is normal and there is no +5 V output,
replace the Power Board.
3. Turn off the power supply momentarily to restore the J003 connector to the
Power Board. Turn on the Power Switch and check that +5 V ±0.5 V is being out-
put between pins 2 (GND) and 1 (+5 V) of J100 on the Main Board.
If not, take the following steps to identify the cause:
→
Turn off the power supply momentarily to disconnect J113 (PANEL) from the
Main Board and check again.
If this is successful, either the Panel Board Assembly or the Panel Cable is
faulty.
→
Turn off the power supply momentarily to disconnect J114 (HEAD1) and J115
(HEAD2) from the Main Board and check again.
If this is successful, either the Head Board or the Print Head Assembly or the
Y Cable Assembly or the Head Cable Assembly or the Origin Sensor
Assembly or the Paper Sensor Assembly is faulty.
→
Turn off the power supply momentarily to take out the Extended Memory
(SIMM) and check again.
If this is successful, the Extended Memory (SIMM) is faulty.
→
Turn off the power supply momentarily to take out the Option Interface Board
and check again.
If this is successful, the Extended Memory (SIMM) is faulty.
→
Turn off the power supply momentarily to disconnect J129 (INK ID) from the
Main Board and check again.
If this is successful, the Junction Board Assembly, the Detector Assembly, the
Ink ID Sensor (either Y/M/C/K) are faulty.
→
Turn off the power supply momentarily to disconnect J110 (Cartridge Sensor
Assembly Black) from the Main Board and check again.
If this is successful, the Cartridge Sensor Assembly Black is faulty.
→
Turn off the power supply momentarily to disconnect J111 (Cartridge Sensor
Assembly Color) from the Main Board and check again.
If this is successful, the Cartridge Sensor Assembly Color is faulty.
→
Turn off the power supply momentarily to disconnect J109 (Waste Fluid Box
Detector Switch Assembly) from the Main Board and check again.
If this is successful, the Waste Fluid Box Detector Switch Assembly is faulty.
→
Turn off the power supply momentarily to disconnect J101 (Paper Sensor Front
Assembly) from the Main Board and check again.
If this is successful, the Paper Sensor Front Assembly is faulty.
→
Turn off the power supply momentarily to disconnect J108 (Paper Sensor Rear
Assembly) from the Main Board and check again.
If this is successful, the Paper Sensor Rear Assembly is faulty.
→
Turn off the power supply momentarily to disconnect J102 (Lever Sensor
Assembly) from the Main Board and check again.
If this is successful, the Lever Sensor Assembly is faulty.
→
Turn off the power supply momentarily to disconnect J121 (X Encoder) from the
Main Board and check again.
If this is successful, the X Motor is faulty.
4. If there is still no +5 V output with all the above connectors disconnected,
→
Replace the DC Cable Assembly
→
Replace the Main Board.