GBC StreamPunch Ultra Service Manual page 36

RTP 1.3 Operator Panel Does Not Illuminate
Use this RTP when the LCD Display does not illuminate.
1. Unplug the machine and plug it back in after 20 seconds
The Operator Interface illuminates.
Yes- Normal operation
2. Close the Front door. Check if the printer screen shows a GBC punch
related fault.
Printer screen shows a GBC punch related fault
Yes- Do RTP1.2 No DC power
3. Do ARP 1.6 to remove the Rear Cover.
4. Plug in the AC Power Cord and turn on the Power Switch.
WARNING
Do not perform Repair activities with the power on or electrical
power supplied to the machine. Some machine components
contain dangerous electrical voltages that can result in electrical
shock and possible serious injury.
5. Check the LEDs on the Control Board.
• With the front door closed there will be (4) LEDs that will be lit.
• With the front door open, there will be (3) LEDs that will be lit.
The LEDs are lit.
Yes- Go to Step 6
6. Check that LCD Cable 7715523 is connected at Connector J36 on
the Control Board (Section 7 Wiring).
Cable 7715523 is connected at Connector J36.
Yes- Go to Step 8
7. Check that LCD Cable 7715523 is connected at the LCD Panel on
the rear of the User Interface. Do the following steps to access the
rear of the User Interface.
a. Open the front door.
GBC StreamPunch Ultra/Ultra MP
No- Go to Step 2
No- Go to Step 3
No- Do RTP 1.2 No DC Power.
No- Connect Cable 7715523
b. Check if 7715523 cable (flat ribbon cable) is connected at the LCD
panel.
Cable 7715523 is connected at the LCD Panel.
Yes- Go to Step 8
8. Check the condition of LCD Cable 7715523.
LCD Cable 7715523 is okay.
Yes-
Go to Step 9
No- Replace LCD Cable 7715523 (PL #1.2).
9. Replace the LCD Board on the rear of the User Interface (ARP 1.12)
This clears the fault
Yes- Normal operation
10. Check for 24 VDC on the LCD Cable 7715523 at Connector J36 on
the Control Board.
There is 24 VDC at Connector J36.
Yes- Escalate to next level.
No- Do the RTP 1.2 to check for 24 VDC into the Control Board.
11-05-2018
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No- Connect Cable 7715523
No- Go to Step 11
RTPS