Read Sharp LC-37HV4E (serv.man6) Service Manual online
12
LC-37HV4E
REMOVING OF MAJOR PARTS
1.Take off the center and lower terminal covers.
2.Remove the two speaker fixing screws each and the speaker connecting terminal, and take off the speaker.
3.Remove the four stand fixing screws and take off the stand.
4.Remove the 19 cabinets A/B fixing screws and take off the cabinet B.
5.Remove the two Key PWB assembly fixing screws and the connector, and take off the Key PWB assembly.
6.Remove the Key PWB insulating sheet fixing screw and take off the Key PWB insulating sheet.
7.Remove the four Main PWB shield fixing screws and take off the Main PWB shield.
8.Remove the four stand angle fixing screws and take off the stand angle.
4
2
4
4
3
1
2
Speaker (left)
Stand
Terminal cover (center)
Terminal cover (lower)
Speaker (right)
P152
P151
5
6
7
8
Stand angle
Key PWB insulating sheet
Key PWB assembly
Main PWB shield
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LC-37HV4E
9.Open six FFC cable holders and remove the three FFC holder (right & left) fixing screws each and all the connec-
tors of flat cables (FFC), and take off the FFC holders (right & left).
10.Remove the Speaker-L and-R PWB fixing screws each and the connectors of them, and take off the Speaker-L
and-R PWBs.
11.Remove the two R/C, LED PWB fixing screws and the connector, and take off the R/C,LED PWB.
12.Remove all the connectors from each PWB.
(Main PWB; 10 points, Power PWB; 5 points, Audio PWB; 3 points, Inverter -1 PWB 7; points, Inverter -2 PWB; 4
points, Inverter -3 PWB 7; points, and Inverter -4 PWB; 4 points.)
9
10
10
9
11
FFC cable holder (left)
FFC cable holder (right)
Cable holder
Cable holder
Speaker-L PWB
Speaker-R PWB
R/C, LED PWB
CN4101
CN4102
P101
P203
P202
P3811
SC4603 SC4601
SC4604SC4602
CN7004
CN4101
CN2004
CN2002
CN4701
CN4702
CN4702
CN3702
CN3701
CN3782
P7505
P7506
P7507
CN2702
P7554
P3801
P3802 P3803
P3811
P7644
P7647
P7618
P7619
P7616
CN7705
CN2003
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
Inverter -3 PWB
Inverter-4 PWB
Inverter-2 PWB
Inverter -1 PWB
Main PWB
Audio PWB
Power PWB
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LC-37HV4E
13.Remove the five main PWB fixing screws, and take off the main PWB.
14.Remove the six power PWB fixing screws, and take off the power PWB.
15.Remove the four audio PWB fixing screws, and take off the audio PWB.
16.Take off the inverter-1 PWB.
17.Remove the three inverter-2 PWB fixing screws, and take off the inverter-2 PWB.
18.Take off the inverter-3 PWB.
19.Remove the three inverter-4 PWB fixing screws, and take off the inverter-4 PWB.
20.Remove the two chassis fixing screws and take off the chassis.
14
17
16
18
13
19
15
Main PWB
Inverter-3 PWB
Inverter-4 PWB
Audio PWB
Power PWB
Inverter-2 PWB
Inverter-1 PWB
20
Chassis
15
LC-37HV4E
•
Handling Precautions for LCD Panel
1. Work in a clean room. (Humidity above 50%)
2. Operators should wear an earthing band.
3. Do not give a shock such as falling and vibration.
4. Use the ionizer. (Within 30 cm)
21.Remove the six LCD panel fixing screws and take off the LCD panel unit.
22.Remove the three sheet angle fixing screws, and take off the sheet angle.
23.Take off the reflection/deflection sheet, prism sheet, diffusion sheet and diffusion panel.
24.Remove the three lamp holders (top & bottom) fixing screws each, and take off the lamp holders (top & bottom).
25.Take off the lamp assembly from the lamp clip.
21
21
LCD panel unit (front)
25
24
24
23
22
22
22
22
Reflection panel
Lamp assembly (7 sets)
Lamp holder (top)
Lamp holder (bottom)
Lamp holder (top)
Lamp holder (bottom)
Diffusion sheet
Prism sheet
Reflection/deflection sheet
Sheet angle
Sheet angle
Diffusion panel
Sheet angle
LCD panel unit
