Sharp PN-G655RE (serv.man3) Service Manual ▷ View online
PN-G655RE
DISASSEMBLY AND ASSEMBLY
3 – 4
4) Remove 17 screws, and remove 2 side bars and the SW inlet angle.
5) Remove 19 angles and remove 4 wall-hanging mounts.
6) Disconnect 1 connector, and remove 38 screws, and remove the
LCD.
Side bar
Side bar
SW inlet angle
PN-G655RE
DISASSEMBLY AND ASSEMBLY
3 – 5
- REPLACEMENT AND REPAIR PROCEDURES OF LCD SUB PARTS -
■ INTRODUCTION
Replacement and repair procedures of the major units in the 65-type
LCD module vertical type (LK645D3LZ2T (VE version)).
LCD module vertical type (LK645D3LZ2T (VE version)).
E Main unit
[Note for works]
1) Work in the clean room.
2) Precautions for handling the LCD panel.
1 Be sure to wear the earth band for handling the LCD panel.
2 Be sure to work on the conduction mat.
3 Do not fall or do not give vibrations.
4 Be sure to use the ionizer. (within 30cm)
5 Keep the humidity in the clean room at 50% or more.
1. Inverter PWB
[Replacement procedure]
1) Remove the inverter cover.
2) Replace the inverter PWB.
2. C-PWB PWB
[Replacement procedure]
1) Remove the C-PWB cover.
2) Remove the cable, and replace the PWB.
[Adjustment after replacement]
• Opposed-type adjustment
• White balance adjustment
The above adjustments are required.
Clean room
Adjustment
Inverter PWB
-------
-------
C-PWB PWB
-------
Opposed-type adjustment, White balance
LCD panel
F
Opposed-type adjustment, White balance
Backlight
F
-------
1
2
3
4
5
6
7
8
Parts code
Pisition
RDENC2275TPZZ
1
RDENC2276TPZZ
234
RDENC2277TPZZ
5
RDENC2278TPZZ
678
Parts code
CPWBY3586TPZA
PN-G655RE
DISASSEMBLY AND ASSEMBLY
3 – 6
3. LCD panel
4. BACKLIGHT
Model name
Parts code
LK645D3LZ2T
RLMPC0619TPZZ
Note that the lamp
holder at the center
must be removed first.
holder at the center
must be removed first.
Reinforce push
out angle
out angle
Reinforce push
out angle
out angle
Polarized reflection
sheet
sheet
Diffusion plate
Diffusion
sheet
sheet
Lens sheet
Lamp holder
Lamp
holder
holder
Lamp
Lamp clip
Lamp holder
PN-G655RE
DISASSEMBLY AND ASSEMBLY
3 – 7
[1] Opposed adjustment
[Preparation]
■ Connection
1) Before connecting the harness, etc., check to confirm that the
power of the unit, the switch of the simple signal circuit, and the
power of the lighting harness 1 are turned OFF.
power of the lighting harness 1 are turned OFF.
2) Connect the lighting harness 1 and the lighting harness 2 to the
lighting 5V12V power.
3) Connect the lighting harness 2 to CN1 side of the simple signal cir-
cuit, and connect the DC harness to CN2 side.
4) Connect the DC harness to the electronic VR harness 1.
5) Connect the electronic VR harness 1 to DC IN side of the elec-
tronic VR adjustment BOX_D, and connect the electronic VR har-
ness 2 to OUTPUT side.
ness 2 to OUTPUT side.
6) Connect the electronic VR harness 2 and the LVDS harness.
7) Connect the LVDS harness to the control PWB of the LCD module.
Note:
• Check to confirm that the switch of the simple signal circuit is
turned OFF, and then turn ON the power of the lighting harness 1.
• Since the electronic VR adjustment BOX_D is not used, do not
touch it.
• Take care not to cut off the cable.
DC harness
Lighting harness 2
LVDS harness
Lighting harness 1
Electronic
VR harness
1
VR harness
1
Electronic VR
adjustment
BOX_D
adjustment
BOX_D
Electronic VR
harness 2
harness 2
Simple signal
circuit
circuit
Lighting 5V12V
power
power
Simple signal
circuit
circuit
DC harness
LVDS
harness
harness
Electronic VR
harness 1
harness 1
Electronic VR
harness 2
harness 2
Lighting 5V
12V power
12V power
Lighting
harness 2
harness 2
Electronic VR
BOX_D
BOX_D
Lighting
harness 1
harness 1
CN1
CN2
1
1
2
ON
OFF
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