DOWNLOAD Sharp LC-22SV2E (serv.man7) Service Manual ↓ Size: 31.29 KB | Pages: 9 in PDF or view online for FREE

Model
LC-22SV2E (serv.man7)
Pages
9
Size
31.29 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Adjusting procedure of each section
File
lc-22sv2e-sm7.pdf
Date

Sharp LC-22SV2E (serv.man7) Service Manual ▷ View online

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.
Preparation for adjustments
Use the dedicated AC adaptor or stable DC power supply.
AC adaptor: UADP-0241CEZZ
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.)
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.
• 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)
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 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,
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 
 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 
 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).
12
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.
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.
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
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
"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
5
1
0
2
1
3
2
0
3
2
0
4
5
5
1
5
1
4
5
0
2
1
T
A
M
P
H
T
A
M
P
L
0
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 90% white and right 20% 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  20% gray.
It is about "RY2, GY2, BY2" at  90% gray.
Adjusting value; x=0.298, y=0.310
Note:This adjustment must be done after aging for 30 minutes or longer.
13
LC-22SV2E
5. Lamp error detection
5-1. Functional description
This LCD colour television has a function (lamp error detection) to be turned OFF automatically for safety
when the lamp or lamp circuit is abnormal.
If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed,
the followings occur.
1
The main unit of television is turned OFF 5 seconds after it is turned ON. (The power LED on the front
side of TV turns from green to red.)
2
If the situation 
1
 happens 5 times sequentially, television can not be turned ON. (The power LED
remains red.)
5-2. Countermeasures
5-2-1. Check when turning OFF the lamp error detection
When television is turned OFF by the lamp error detection mentioned above, it enters the adjustment
process with the power LED red. Entering the adjustment process turns OFF the error detection and turns
ON TV.
This enables the operation check to detect errors in the lamp or lamp circuit.
Check whether "ERROR NO RESET" on line 7, page 1 of the adjustment process is 1 or more. If it is 1 or
more, it indicates the lamp error detection was executed.
5-2-2. Resetting of the lamp error count
After confirming that the lamp or lamp circuit is normal, reset the lamp error count. Select "ERROR NO
RESET" on line 5, page 1 of the adjustment process and set the number to 0 using the volume button.
M O D E L
SV2E
N T S C
P W M
F R E Q
1DD
P A L
P W M
F R E Q
1DD
N T S C
P W M
D U T Y
0
P A L
P W M
D U T Y
0
T V
G A I
N
OFF
E R R O R
N O
R E S E T
0
P U B L I C
M O D E
OFF
W L D 1 3
V E R
1 . 0  0
Reset 0
Afterwards, perform the operation check to confirm that the lamp error detection does not function.
Page 1 of the adjustment process
14
LC-22SV2E
No.
Pin name
Function
1
N. C.
2
N. C.
3
SCL2
4
SDA2
5
VACT
6
CSYNC
7
IREM-1
8
BYTE
9
CNVSS
10
TEST_RST
11
SH_ON
12
RESET
13
XOUT
14
VSS
15
XIN
16
VDD
17
OSCIN
18
OSCOUT
19
PSWIN
20
VSYNC
21
BLK
22
N. C.
23
DAC1CS
24
DAC2CS
25
SCL1
26
SDA2
27
A_DA
28
SCK
29
SSI
30
SSO
31
N. C.
32
R
33
G
34
B
35
TEXT_OUT
36
TEXT_IN
37
SCLK
38
BUSY
39
A_ENA
40
N. C.
41 MREADY/EPM
42
L_ERR
43
N. C.
44
SSB
45
SRDYB
46
CE
47
CK
48
DA
49
PD
50
VSH_OUT
No.
Pin name
Function
51
REQ_OUT
52
HPMUTE
53
SMUTE
54 TEXT_MODE1
55 TEXT_MODE0
56
PAMUTE
57
VSH IN
58
DEF
59
STB
60
SRESET
61
N. C.
62
HSYNC
63
POWIN
64
VSYNC
65
TV/AV1
66
AV/AV2
67
EXT
68
I2/UA
69
SW_SYNC
70 VACT_CONT
71
PMUTE
72
TVPOW
73
RGBCON
74
RC_LED
75
OPC_LED
76
PRT_LED
77
MP_CS
78
MP_DA
79
MP_CLK
80 DDC_RESET
81
KEY3
82
KEY4
83 PANEL_POW
84
TEXT_H
85 TUNERMODE1
86 TUNERMODE2
87
N. C.
88
SSW
89
AFT
90
N. C.
91
KEY1
92
KEY2
93
SLOW_SW
94
OPC
95
N. C.
96
N. C.
97
N. C.
98
TVSETB
99
VCCE
100
N. C
Pin functions of microprocessor IC (IC2001) RH-iXA380WJZZQ
Open
Open
I2C bus clock data output
I2C bus data output
Scaller IC
Composite sync Signal
Remote control signal input
GND
GND/FLASH write (3.3V)
TEXT reset output
TEXT communication control
Reset input (H;Normal, L;Reset)
System clock output
GND
System clock input
Power (3.3V)
OSD frequency input
OSD frequency output
Main power input (H;OFF, L;On)
Scaller
OSD blank output
DAC1 chip select
DAC2 chip select
I2C bus clock putput
I2C bus ddata in/output
Autowide
Scaller clock output
Scaller data input
Scaller data output
L output fixed
OSD R signal output
OSD G signal output
OSD B signal output
TEXT data output/FLASH write
TEXT data input/FLASH write
FLASH write
FLASH write
Autowide
L output fixed
External bus mode shift input/FLASH write (H;Normal, L;External bus mode shift demand)
Lamp error detect input (H;Error, L;Normal)
L output fixed
For scaller IC
For scaller IC
FLASH write
For autowide
For autowide
For autowide
Regulator control output (H;On, L;Off)
Completion output of external bus mode shift (H;Normal, L;External bus mode)
HPMUTEHeadphone mute output (H;On, L;off)
Audio mute input (H;On, L;Off)
TEXT microprocessor updating
TEXT microprocessor updating
Speaker standby mute output (H;Off, L;On)
Regulator power detect (H;Normal, L;Abnormal)
Extrnal output audio mute output (H;On, L;Off)
Microprosessor power supply OFF output
Multiplex reset output (H;Normal, L;Reset)
L output fixed
OSD horizontal sync signal input
DC/DC Start-up detect input (H;On, L;Off)
OSD vertical sync signal input
TV/External select (H;TV, L;External)
AV1/AV2 select (H;AV2, L;AV1)
External control change
I2C/UART change
Synchronous change control
For scaller IC
Video mute output (H;On, L;Off)
TV power control (H;On, L;Off)
SCART RGB detect
R/C receive LED output
Auto save LED output (H;On, L;Off)
Slave IC error detect output (FLASH)
G/A chip select
G/A data output
G/A clock output
Digital decoder reset (H;Normal, L;Reset)
Key input 3
Key input 4
Panel power control (H;On, L;Off)
TEXT/SCART RGB change
System change
System change
L output fixed
S terminal insert detect (H;Not connect, L;Connect)
AFT voltage input
L output fixed
Key input 1
Key input 2
Slow switch detect input
Auto save sensor level input
Open
Open
Pull up
GND
Power(5V)
Pull-up
Page of 9
Display

Sharp LC-22SV2E (serv.man7) Service Manual ▷ Download

  • DOWNLOAD Sharp LC-22SV2E (serv.man7) Service Manual ↓ Size: 31.29 KB | Pages: 9 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp LC-22SV2E (serv.man7) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp LC-22SV2E (serv.man7) LCD. Information contained in Sharp LC-22SV2E (serv.man7) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.