Canon iR C3200 Series Service Manual page 845

Field Remedy
When this symptom occurs, replace the Main Controller PCB with a new one.
FG3-2854 Main Controller PCB
16.3.4.2.2 LCD on control panel not lighting up, remaining black
Symptom
LCD on control panel not lighting up, remaining black
Description
The main power indicator lights up and the machine starts the initial rotation.
Cause
As a result of inspection, the SDRAM on the main controller was found not to be fitted securely on the main
controller PCB.
Field Remedy
Check whether the SDRAM is securely fitted on the main controller PCB. If not, reinsert it securely.
16.3.4.2.3 LCD on control panel does not come on remaining black
[ Case in the field ]
Description
In the field, this symptom was solved by an insertion of the BootROM, the connector of the HDD, the Resolution
Switching Board and the SDRAM.
Field Remedy
Perform the steps below in the order presented. Note that there are relatively many cases that reinsertion of the
BootROM solved the problem in the field.
1. Remove and insert the BootROM.
2. Unplug and insert the connectors of the HDD.
3. Remove and insert the Resolution Switching Board.
4. Remove and insert the SDRAM. If the symptom still recurs, replace the SDRAM with a new one.
WA7-2645 SDRAM DIMM Ass'y
16.3.4.2.4 How to adjust touch position on LCD
[ Manual-related ]
Field Remedy
In service mode [COPIER>Function>PANEL>TOUCHCHK], press 'OK'. And press '+' indicated on the touch
panel at nine locations in sequence.
Chapter 16
0002-3464
0003-2353
0003-2404
16-71