Faulty Scanner Assy; Faulty Ros Assy - Star Micronics LS-5 SERIES Technical Manual

TROUBLESHOOTING

3-3. Faulty Scanner Assy

Step
1 Check parts with different specifications for problems with
usage, defective installation, breakage, and deformation.
• Main parts to be checked:
(1) ROS assy, (2) MCU PCB, (3) Harness assy ROS
(4) LVPS assy
2 (Check power supply of scanner assy) *1
Is 24 VDC being supplied between P/J12-13PIN
12PIN?
3 (Replace MCU PCB)
Does the problem occur even after the MCU PCB is replaced
with a normal one?
4 (Check harness assy ROS)
Is there conductivity between J12
*1: Check with the connector (P/J111) disconnected from the HVPS.

3-4. Faulty ROS Assy

Step
1 Check parts with different specifications for problems with
usage, defective installation, breakage, and deformation.
• Main parts to be checked:
(1) ROS assy, (2) MCU PCB, (3) Harness assy ROS
(4) Harness assy SOS, (5) LVPS assy
2 (Check power supply of LD assy on ROS assy) *1
Is 5 VDC being supplied between P/J12-2PIN
3 (Check speed control signal of scanner motor) *1
When the power supply is turned on, is the voltage LOW (0
VDC) between P12-8PIN
VDC) between P12-9PIN
4 (Check power supply of SOS PCB on ROS assy) *1
Is 5 VDC being supplied between P/J19-3PIN
5 (Replace MCU PCB)
Does the problem occur even after the MCU PCB is replaced
with a normal one?
6 (Check conductivity of harness assy ROS)
Is there conductivity between J12
7 (Check conductivity of harness assy SOS)
Is there conductivity between J19
*1: Check with the connector (P/J111) disconnected from the HVPS.
Note: If the error message "CALL SERVICE 03" is displayed even after the ROS assy has been replaced, please check
according to the procedures outlined in Section 3-21, "Noise".
Check
↔
↔
J114?
Check
↔
P/J12-6PIN?
↔
P12-10PIN (SG) and HIGH (4.1
↔
P12-10PIN (SG)?
↔
P/J19-1PIN?
↔ ↔
J112 and J12
↔
J113?
– 100 –
Measure
YES
To step 2
To step 3
P/J12-
To step 4
Replace ROS
assy.
Measure
YES
To step 2
To step 3
To step 4
To step 5
To step 6
To step 7
J114?
Replace ROS
assy.
NO
Replace or
reinstall.
To section 3-2
Processing
completed.
Replace harness
assy ROS.
NO
Replace or
reinstall.
To section 3-1
Replace MCU
PCB.
To section 3-1
Processing
completed.
Replace harness
assy ROS.
Replace harness
assy SOS.