Service Modes, Error Codes, And Fault Finding - Philips PDP42V7 Series Service Manual

5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:
5.1 Quick Module Check PDP42V7*
5.1.1 No Display
5.1.2 Bar Defect (Vertical)
5.1.3 Line Defect (Vertical)
5.1.4 Bar Defect (Horizontal)
5.1.5 Line Defect (Horizontal)
5.1.6 Mis-discharge Defect
5.2 Detailed Module Check PDP42V7*
5.2.1 No Display
5.2.2 Display Defects
5.2.3 Checking for Component Damage
5.3 Detailed PSU Check PDP42V7*
5.3.1 No Display
5.1 Quick Module Check PDP42V7*
What kind of defect?
No display?
Dark display?
Vertical defect?
Horizontal defect?
Mis–discharge
on screen?
Trouble Shooting
No display?
Dark display ?
Vertical defect?
Horizontal defect?
Mis –discharge
on screen?
Service Modes, Error Codes, and Fault Finding
Please follow the "No display" trouble shooting way (see figure below).
Please follow the "Dark display" trouble shooting way (see figure below).
Bar defect appeared?
Please follow the "Line defect" trouble shooting way (see figure below).
Please follow the "Mis-discharge" trouble shooting way (see figure below).
Figure 5-1 Logical judgement
Check model No. of module, all connectors and cables.
Check panel appearance
Replace Ctrl B/D
Check all cables and connectors
Check panel appearance
Check FPC Replace YDR B/D
Replace YDR B/D
Figure 5-2 Quick check
Notes:
• If it is not possible to repair the PDP by using the trouble-
shooting and repair process described below, exchange
the boards, mentioned in the service process "Exchanging
boards" at the end of this chapter.
• If boards are exchanged, always re-align them, to make
sure the PDP will perform correctly. This is also described
in the service process "Exchanging boards" at the end of
this chapter.
Please follow "Bar defect" trouble shooting
way (see figure below).
Line defect
Check PSU output (Va,Vs,5v)
Replace Y, Z B/D
Check IPM of Y SUS ,Z B/D
Check TCP Replace X B/D
Replace YSUS B/D
Replace Ctrl B/D
Replace YSUS B/D
LGE PDP 2K5 5.
F_15590_064.eps
050705
Check Y, Z B/D Input
voltage
Replace YDR B/D
Replace Ctrl B/D
Replace Ctrl B/D
F_15590_063.eps
EN 9
050705