GBC FusionPunch II Service Manual page 88

8. On the Punch I/O PWB, disconnect
Optical Relay Opto2. Activate the Back
Gauge Fingers output and observe LED
L0B7.
NOTE: In this step, you are checking
to see if the LED remains LIT when
the relay is disconnected, NOT
flashing.
LED L0B7 remains lit when its Punch I/O
PWB optical relay is disconnected.
Y N
Reconnect the relay and go to
Step 9.
Replace Optical relay Opto2 on the
Punch I/O PWB (PL 3.1).
9. Check the continuity of the harness
between the Little Star Controller PWB
P1-HV02 and Punch I/O PWB P22-
OUTB7
The continuity is OK.
Y N
Replace the harness between the
Punch I/O PWB P/J22 and the Little
Star Controller PWB P1 (PL 6.1A).
Replace the Little Star Controller PWB
(PL 3.1).
10. On the Punch I/O PWB, disconnect P/J
4B and Optical Relay Opto2. In the
Diagnostics Mode, sequentially activate
and deactivate the back Gauge Fingers
output. Observe L0B7 on the Punch I/O
PWB.
Quality RAP 5.4 Trail Edge Torn, Marked, or Creased
LED L0B7 sequentially lights and
extinguishes when the output is toggled.
Y N
Reconnect P/J 4B, reinstall the
Optical Relay, and go to Step 11.
Reconnect P/J 4B, reinstall the Optical
Relay, and go to Step 12.
11. Check the continuity of the harness
between the Little Star Controller PWB
P1-HV02 and Punch I/O PWB P22-
OUTB7
The continuity is OK.
Y N
Replace the harness between the
Punch I/O PWB P/J22 and the
Little Star Controller PWB P1 (PL
6.1A).
Replace the Little Star Controller PWB
(PL 3.1).
12. With the output active, check Optical
Relay Opto2 on the Punch I/O PWB.
The light on the relay is lit when the
output is active.
Y N
Replace Optical Relay Opto2 on
the Punch I/O PWB (PL 3.1).
Go to Step 13.
13. Check the 3-60 VDC, 3 amp fuse on the
Optical Relay.
The fuse is OK
Y N
Replace the fuse.
Go to Step 14.
12/2003
3-8
14. With the output active, check for
+24VDC supplied to the Back Gauge
Solenoid by placing the meter leads
across P/J 4B-24VI and P/J 4B-OUTB7.
There is +24VDC across these points.
Y N
Replace the Punch I/O PWB
(PL3.1).
Check continuity and shorts to ground in
the harness between the P/J 4B on the
Punch I/O PWB and the Back Gauge
Solenoid.
The harness is open or shorted to
ground.
Y N
Replace the Back Gauge Solenoid
(PL 4.3C).
Replace the harness (PL 6.1A).
GBC FusionPunch II Service Manual