Sharp LC-22SV2E (serv.man2) Service Manual ▷ View online
9
LC-22SV2E
7. Remove the top cover fixing screws (2 pcs.).
8. Remove the control PWB fixing screws (2 pcs.).
9. Remove the digital PWB fixing screws (4 pcs.).
10. Detatch the chassis frame cover fixing hooks (5 pcs.).
11. Remove the 21-pin terminal fixings screws (2 pcs.).
12. Remove the analog PWB fixing screws (3 pcs.).
13. Remove the inverter PWB fixing screws (4 pcs.).
14. Remove the R/C, LED PWB fixing screws (2 pcs.).
9
9
12
13
11
8
14
10
10
7
Digital PWB
Main PWB
Chassis Frame
Inverter PWB
Operation PWB
R/C, LED PWB
Chasis
Frame Cover
Frame Cover
Control Panel
(Top Cover)
(Top Cover)
10
LC-22SV2E
»
Precautions in handling the LCD panels
1. Work in a clean room (with humidities below 50%).
2. Be sure to wear an anti-static armband.
3. Handle the panels on an electroconductive mat.
4. Be careful not to fall, shake and shock the panels.
1. Work in a clean room (with humidities below 50%).
2. Be sure to wear an anti-static armband.
3. Handle the panels on an electroconductive mat.
4. Be careful not to fall, shake and shock the panels.
15. Remove the LCD panel unit fixing screws (4 pcs.).
16. Remove the reflection/deflection, prism and diffusion sheets.
17. Remove the ITO earth spring fixing screw (1 pc.).
18. Remove the ITO sheet and diffusion panel.
19. Remove the lamp fixing holder fixing screws (6 pcs.).
20. Detach the lamp clip (4 pcs.).
21. Detach the lamp unit-A/B.
22. Remove the reflection panel fixing screws. (6 pcs.).
16. Remove the reflection/deflection, prism and diffusion sheets.
17. Remove the ITO earth spring fixing screw (1 pc.).
18. Remove the ITO sheet and diffusion panel.
19. Remove the lamp fixing holder fixing screws (6 pcs.).
20. Detach the lamp clip (4 pcs.).
21. Detach the lamp unit-A/B.
22. Remove the reflection panel fixing screws. (6 pcs.).
22" LCD Panel
Unit
(RLCDTA011WJZZ)
Unit
(RLCDTA011WJZZ)
17
15
20
16
19
19
18
22
21
Reflection / Deflenction Sheet
(PSHEPA003WJZZ)
(PSHEPA003WJZZ)
Prism Sheet
(PSHEPA002WJZZ)
(PSHEPA002WJZZ)
Diffusion Sheet
(PSHEP0294CEZZ)
(PSHEP0294CEZZ)
Diffusion Panel
(PCOVU0108CEZZ)
(PCOVU0108CEZZ)
Lamp Fixing Holder
(LHLDZ2184CEKZ)
(LHLDZ2184CEKZ)
Lamp Clip
(LHLDZ2185CEZZ)
(LHLDZ2185CEZZ)
Lamp Fixing Holder
(LHLDZ2184CEKZ)
(LHLDZ2184CEKZ)
Lamp Unit-B
(KLMP-0127CEZZ)
(KLMP-0127CEZZ)
Lamp Unit-A
(KLMP-0126CEZZ)
(KLMP-0126CEZZ)
Back Sheilding Plate
(PSLDM4699CEFW)
(PSLDM4699CEFW)
ITO Earth Spring
(MSPRP1220CEFW)
(MSPRP1220CEFW)
Reflection Panel
(PMiR-0299CEZZ)
(PMiR-0299CEZZ)
ITO Sheet
(PSHEP0295CEZZ)
(PSHEP0295CEZZ)
11
LC-22SV2E
ADJUSTING PROCEDURE OF EACH SECTION
The best adjustment is made before shipping. If any position deviation is found or after part replace is performed,
adjust as follows.
adjust as follows.
Preparation for adjustments
Use the dedicated AC adaptor or stable DC power supply.
AC adaptor: UADP-0241CEPZ
DC power supply: 13V 5.4A
AC adaptor: UADP-0241CEPZ
DC power supply: 13V 5.4A
1. Entering the adjustment processing mode
• A “POWER” key is made on with pushing an “TV/VIDEO” and “MENU” keys at the same time.(K of the inspection
process mode is displayed by the upper left of the image plane.)
→
Next, “CH (
Ù
)” and “VOL (–)” keys are pushed
at the same time.(It becomes the image plane of the adjustment process mode.).....When it is canceled, it is made
to turn it off.(Even off in the “MAIN POWER” key, off with R/C are good.)
to turn it off.(Even off in the “MAIN POWER” key, off with R/C are good.)
2. Key operation in the adjustment process mode
• The receiving channel UP/DOWN is performed with the “CH (
ù
)/(
Ù
)” keys.
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.
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”, “Menu cursor”, “CH (
ù
)/(
Ù
)” or “VOL (+)/(–)” keys
(LCD TV set and remote control).
• Adjustment item is chosen with the Menu cursor upward/downward keys.
• The adjustment item makes a toggle operation with the “MENU” key input. (Next item)
• The adjustment item makes a toggle operation with the “MENU” key input. (Next item)
If the “MENU” key is input while the bottom item is selected, it moves to the top item on the next page.
• Press the auto preset button on the remote controller in the adjustment process mode, and the top item of the
next page will show up regardless of which item appears now.
Page 1
Page 1
→
Page 2
→
...
→
Page 23
→
Page 1
• Press the manual memory button on the remote controller in the adjustment process mode, and the top item of
the same page will show up.
• UP/DOWN of each adjustment vale selected is performed with the VOL (+)/(–) keys input.
• For P16 – 17, the unit enters the register select mode with the VOL (+)/(–) keys input while NTSC/PAL is selected,
• For P16 – 17, the unit enters the register select mode with the VOL (+)/(–) keys input while NTSC/PAL is selected,
and the cursor moves to the address 01.
• The cursor moves up or down with the “CH (
ù
)/(
Ù
)” keys and moves left or right with the VOL (+)/(–) keys, 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 “VOL (+)/(–)” keys input is performed.
00
When the decision is made, the cursor moves to the adjustment value selected, and UP/DOWN of each adjustment
value selected by the “VOL (+)/(–)” keys input is performed.
00
↔
01
↔
...
↔
79
↔
7A
↔
...
↔
FF
↔
00
↔
...
Decide with the 12 key and return to the address select. Move to the next item with the “MENU” key.
During address select, the cursor movement by the “VOL (+)/(–)” keys input is as follows:
Example: 01
During address select, the cursor movement by the “VOL (+)/(–)” keys input is as follows:
Example: 01
↔
02
↔
03
↔
01
↔
...
The cursor movement by the “CH (
ù
)/(
Ù
)” keys input is as follows:
Example: 02
↔
05
↔
...
↔
F6
↔
02
↔
...
3. Initialization
3-1. Connect the pins (81) and (82) of IC2001 (microprocessor) to GND, and turn on the power.
3-2. Select the model name to (22SV2E/22SV2K).
3-2. Select the model name to (22SV2E/22SV2K).
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LC-22SV2E
4. Adjustment
4-1. +B (5V) adjustment (R3750 : Main Unit)
1) Receive the colour bar signal.
2) Adjust the voltage of the positive (+) side of C3724 to 5.00 ±0.02V.
2) Adjust the voltage of the positive (+) side of C3724 to 5.00 ±0.02V.
Note: Since 5.0V is a reference voltage of all power voltage, adjust it precisely.
4-2. +B (13V) adjustment (R4657 : Digital Unit)
1) Receive the colour bar signal.
2) Connect the digital voltmeter to TP4751, and adjust to 13.00 ±0.05V.
2) Connect the digital voltmeter to TP4751, and adjust to 13.00 ±0.05V.
Note: Since 13.00V is a reference voltage of all power voltage, adjust it precisely.
4-3. Counter-bias adjustment
Please perform this adjustment to each "50Hz" and "60Hz".
1) Enter the process adjustment mode.
2) Select the "14" (Dot reversal flicker pattern) of "G/A TEST PATTERN" on page 19 of the adjustment process
2) Select the "14" (Dot reversal flicker pattern) of "G/A TEST PATTERN" on page 19 of the adjustment process
mode.
3) Select the "COM BIAS 60"/"COM BIAS 50" on page 2 of the adjustment process mode.
4) Adjust the flicker of a screen to be minimum.
4-4. TAMP adjustment
1) Receive the colour bar signal.
2) See if the "Y" reading on page 2 of the adjusment process mode is somewhere following. If not, make the
2) See if the "Y" reading on page 2 of the adjusment process mode is somewhere following. If not, make the
"PAL TAMP" adjustment to get the "Y" reading in the range of "BB" thru "CA".
3) If the adjustment of "PAL TAMP" is executed, write its adjustment value to the "SECAM TAMP" manually.
(Screen of the page 2 of the adjustment processing menu OSD)
0
1
2
3
4
5
6
7
8
9
10
11 12 13
14 15 16
17 18 19
20 21 22
23 24 25 26
2
C
O
M
B
I
A
S
6
0
C
O
M
B
I
A
S
5
0
5
7
P
A
L
T
A
M
P
S
E
C
A
M
T
A
M
P
2
4
2
4
R
X
1
G
X
1
B
X
1
R
Y
1
G
Y
1
B
Y
1
R
Y
Y
2
G
Y
2
B
Y
2
R
X
2
G
X
2
B
X
2
C
U
T
O
F
F
5
–
0
2
1
3
2
0
4
5
7
5
0
2
1
2
2
5
3
2
0
4
5
7
6
8
6
4
5
0
2
1
T
A
M
P
H
T
A
M
P
L
C
0
C
A
B
B
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Y Data
(White 75%)
4-5. White balance adjustment
1) Receive the following signal.
Window pattern signal having left 70% white and right 40% white.
2) Adjust the "RY1, GY1, BY1" and "RY2, GY2, BY2" on page 2 of the adjustment process mode to be best
condition.
It is about "RY1, GY1, BY1" at 40% gray.
It is about "RY2, GY2, BY2" at 70% gray.
Adjusting value; x=0.257, y=0.264 (40% gray)
It is about "RY1, GY1, BY1" at 40% gray.
It is about "RY2, GY2, BY2" at 70% gray.
Adjusting value; x=0.257, y=0.264 (40% gray)
x=0.274, y=0.284 (70% gray)
Note:This adjustment must be done after aging for 30 minutes or longer.
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