Display Does Not Show Any Image - Horizon Fitness PF-P330 Manual

4: Mechanical Troubleshooting

4-11 Display Does Not Show Any Image

When selecting sheet size or fold
pattern, the machine does not sound
activating.
Display
LCD P.C.B
QPW-677
Flat Cable
Control P.C.B
QPM-192
When no sound can be heard
Check the followings:
1. The flat cable (shown above) is fully con-
nected.
- The display panel is assembled with the LCD
P.C.B. QPW677. Therefore, to replace the display
panel, replace the QPW677.
If the problem is still not resolved, replace the
control P.C.B. QPM192.
The volume for panel brightness is
turned to Min.
1 1 1
CON9 CON8 CON4
CON5
DSW1
VR2
C10
C11
CPU
QPM-192
1 1 1 TP5
CON10 CON2 CON1
GND
CON1 CON1
QPW-422 QPW-422
CON2 CON3 CON2 CON3
The brightness of the display panel is adjusted
by the volume VR1 on QPM192 (shown
above.)
When replacing the QPM192 and the VR1 is
turned to Min, the display can not show any
image.
[Additional Information]
Rotary Switch DSW1 Setting
0 Not Used
1 Japanese
2 English
3 English
4-11: Display Does Not Show Any Image
4
Mechanical Troubleshooting
1
VR1
BZ
IC2
1
CON5
VR1
TP4
5V
BZ
/mm
/inch
/mm
4-13