Star Micronics LS-5 SERIES Technical Manual page 99

Step
9 (Check ROS assy) *2
Disconnect connector (P/J12) from the MCU PCB. Then turn
on the power and see if a display appears on the LCD and if the
fan rotates.
10 (Check cassette feed section) *1 *2
Disconnect connector (P/J13) from the MCU PCB. Then wait
2-3 minutes and turn on the power. See if a display appears on
the LCD and if the fan rotates.
11 (Check Tray 2) *1 *2
Disconnect the optional feeder unit. Then wait 2-3 minutes and
turn on the power. See if a display appears on the LCD and if
the fan rotates.
12 (Check feed solenoid of Tray 2) *2
Check for conductivity between J201-1PIN
0Ω on Tray 2.
13 (Check turn solenoid of Tray 2) *1
Check for conductivity between J202-1PIN
0Ω on Tray 2.
14 (Check feed solenoid of Tray 1) *2
Check for conductivity between J201-1PIN
0Ω on Tray 1.
15 (Check turn solenoid of Tray 1) *1 *2
Check for conductivity between J202-1PIN
0Ω on Tray 1.
16 (Check ROS assy) *1
Disconnect connector (P/J19) from the MCU PCB. Then wait
2-3 minutes and turn on the power. See if a display appears on
the LCD and if the fan rotates.
17 (Check console assy) *1
Disconnect connector (P/J200) from the console assy. Then
wait 2-3 minutes and turn on the power. See if a display appears
on the LCD and if the fan rotates.
*1: Check the shorting of the 5 VDC power supply.
*2: Check the shorting of the 24 VDC power supply.
Check
↔
J201-2PIN at
↔
J202-2PIN at
↔
J201-2PIN at
↔
J202-2PIN at
– 95 –
TROUBLESHOOTING
Measure
YES
Replace ROS
To step 10
assy.
To step 11
To step 16
To step 12
To step 14
Replace the feed
To step 13
solenoid of Tray
2.
Replace the turn
Replace feeder
solenoid of Tray
PCB aux.
2.
To step 15
Replace the feed
solenoid of Tray
1.
Replace the turn Replace feeder
solenoid of Tray PCB.
1.
Replace ROS
To step 17
assy.
Replace console
Replace main
assy.
logic board.
NO