Faulty Feed Solenoid - Star Micronics LS-5 SERIES Technical Manual

3-15. Faulty Feed Solenoid

Step
1 Check parts with different specifications for problems with
usage, defective installation, breakage, deformation, and adhe-
sion of grime or foreign matter.
• Main parts to be checked:
(1) Feeder solenoid, (2) MCU PCB, (3) Feeder PCB
(4) Feeder PCB aux, (5) Harness assy 1tray
(6) Harness assy out, (7) LVPS assy
2 (Check power supply of feed solenoid) *1
Is 24 VDC being supplied between P/J13-10PIN
2PIN?
3 (Check feed solenoid)
Is there conductivity at approximately 120 Ω between J201-
↔
1PIN J201-2PIN?
4 (Check feed solenoid) *1 *2
Is 24 VDC being supplied between P/J13-11PIN {P/J13-
↔
12PIN} P/J11-2PIN?
5 (Check harness assy 1tray) *1
Is there conductivity between J13
1tray?
6 Is the feed solenoid of Tray 1 defective?
7 (Check feeder PCB)
Is there conductivity between P115
PCB?
8 (Check feeder PCB)
Is there conductivity between P115
PCB?
9 (Check harness assy out)
Is there conductivity between P116
out?
10 (Check feeder PCB aux)
Is there conductivity between P115
aux?
*1: Check with the connector (P/J111) disconnected from the HVPS.
*2: This is noted for both Tray 1 (upper cassette feeder) and Tray 2 (lower cassette feeder). To distinguish Tray 1 from
Tray 2, items concerning Tray 2 are enclosed in brackets { }.
Check
↔
↔
J115 on the harness assy
↔
P201 of the feeder
↔
P116 of the feeder
↔
J115 of the harness assy
↔
P201 of the feeder PCB
– 109 –
TROUBLESHOOTING
Measure
YES
To step 2
To step 3
P/J11-
To step 4
Replace MCU
PCB.
To step 6
To step 7
Replace the feed
solenoid of Tray
1.
To step 9
To step 10
Replace the feed
solenoid of Tray
2.
NO
Replace or
reinstall.
To section 3-2
Replace feed
solenoid.
To step 5
Replace harness
assy 1tray.
To step 8
Replace feeder
PCB.
Replace feeder
PCB.
Replace harness
assy out.
Replace feeder
PCB aux.