DOWNLOAD Sharp LC-12A2E (serv.man2) Service Manual ↓ Size: 277.04 KB | Pages: 13 in PDF or view online for FREE

1. Insert your finger into the center of the terminal cover

and pull it toward you to detach the terminal cover.

2. Remove the four screws 

1

 and one screw 

2

.

3. Open the cabinet B by approx. 45˚ from the bottom

of the cabinet (stand side).

4. Remove the lead wire from the cable clamp 

3

.

5. Remove the power connector 

4

.

6. Remove the connector 

5

 from the light reception

unit.

7. Remove the lead wire from the cable clamp 

6

.

8. Remove the speaker connector 

7

.

9. Remove the FFC from the FFC connector 

8

 on the

main PWB.

10. Remove the connector 

9

 from the ir unit.

11. Remove the connector 

0

 from the switch PWB.

12. Remove the right and left speaker connectors 

q

on the terminal PWB.

<<Disassembly of the main PWB>>
1. Disconnect the flexible cable connectors 

w

 and

e

 from the LCD panel.

2. Disconnect the cable connectors 

r

 and 

t

 from

the fluorescent lamp.

3. Remove the four screws 

y

.

<<Disassembly of the terminal PWB>>
1. Remove the cover 

i

.

2. Remove the five screws 

u

.

3. Remove the two screws 

o

. Take them out of the

cabinet holes.

<<Cabinet A side>>

<<Cabinet B side>>

Cabinet A        GCABA2401CEKB

Terminal Cover        GCOVA1855CEKB

Hinge Cover            GCOVA1853CESA
Rotation Cover        GCOVA1854CESA

Cabinet B        GCABB2295CEKA

•

Caution for handling the LCD panel

1. Work in a clean room. (Humidity: 50% or more)
2. A worker must wear arm bands.
3. Work on a conductive mat.
4. Do not expose the unit to shock such as fall or

vibration.

<<Disassembly of LCD Panel>>
1. Remove the six LCD unit fixing screws.
2. Remove the shield case.
3. Remove the light guide plate holder.
4. Remove the reflection panel.
5. Remove the light guide plate lamp unit.
6. Remove the light guide plate.
7. Remove the lamp unit.
8. Remove the fixing angle.
9. Remove the ITO sheet, diffusion sheet and

reflection polarizing sheet.

1

1

1

3

2

4

5

6

7

8

9

LCD Display Unit

Reflection Polarising Sheet

Spacer

Spacer

Fixing Angle

Shield Case

Light Guide Plate Holder

Reflection Panel

Lamp Unit
(KLMP-0096CEZZ)

Light Guide Plate

ITO Sheet

Diffusion Sheet

Use the dedicated AC adapter or stable DC power supply.
AC adapter: UADP-0210CEZZ
DC power supply: 12 (V), 3.2 (A)

1-1. Checker adjustment

Power ON (initialization) 

→

 Setting of model and inch size 

→

 Model data transfer to the setting E

2

PROM (I

2

C) 

→

Adjustment processing mode 

→

 Adjustment (+B adjustment, 38.9-VCO adjustment, 33.9-L’-VCO adjustment,

RF-AGC cut-in adjustment)

1-2. Finish processing adjustment

Setup 

→

 Power ON 

→

 Adjustment processing mode (Remote control) 

→

 Opposed bias, TV contrast and white

balance adjustments

• Setting the 81 pin (KEY4) or 82 pin (KEY5) of IC2001 (microcomputer) to “L”, turn on the power.

Selection of the receiving channel
• The receiving channel UP/DOWN is performed with the tuning UP/DOWN key.

One push ... The UP/DOWN tuning is performed per channel.
Continuous push ... The UP/DOWN search is performed until a next receivable station is found.

• Various adjustments

The adjustment is performed for each item by the menu select, tuning UP/DOWN or volume UP/DOWN key (main
body and remote control).

• The adjustment item makes a toggle operation with the menu select key input. (Next item)

If the menu select key is input while the bottom item is selected, it moves to the top item on the next page.

• The adjustment item makes a toggle operation with the video select key input.

(Previous item) If the video select key is input while the top item is selected, it moves to the bottom item on the
previous page.

• If the auto preset key is input while an item is selected, it moves to the top item on the next page.

Page 1 

→

 Page 2 

→

 ... 

→

 Page 15 

→

 Page 1

• If the manual memory key is input while an item is selected, it moves to the top item on that page. UP/DOWN of each

adjustment vale selected is performed with the volume UP/DOWN key input.

• For P14 – 15, the unit enters the register select mode with the volume UP/DOWN key input while PAL/NTSC is

selected, and the cursor moves to the address 01.

• The cursor moves up or down with the tuning UP/DOWN key and moves left or right with the volume UP/DOWN key,

and a decision is made with the 12 key.
When the decision is made, the cursor moves to the adjustment value selected, and UP/DOWN of each adjustment
value selected by the volume UP/DOWN key input is performed.
Decide with the 12 key and return to the address select. Move to the next item with the menu select key.
During address select, the cursor movement by the volume UP/DOWN key input is as follows:
Example: 01 

↔

 02 

↔

 03 

↔

 01 

↔

 ...

The cursor movement by the tuning UP/DOWN key input is as follows:
Example: 02 

↔

 05 

↔

 ... 

↔

 F6 

↔

 02 

↔

 ...