Sharp LC-22SV2E (serv.man2) Service Manual ▷ View online
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.
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.)
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
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.
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.
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
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
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
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
81
KEY3
82
KEY4
83 PANEL_POW
84
84
TEXT_H
85 TUNERMODE1
86 TUNERMODE2
87
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/input
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
Open
I2C bus clock data output
I2C bus data output/input
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 data 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)
DAC2 chip select
I2C bus clock putput
I2C bus data 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)
Headphone mute output (H;On, L;off)
Audio mute output (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 (H;TEXT, L;SCART)
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
Headphone mute output (H;On, L;off)
Audio mute output (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 (H;TEXT, L;SCART)
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
15
LC-22SV2E
Adjustment process mode menus at a glance
Page
Item
Initial setting Function
Adjust/modify
1
MODEL
SV2E
Model name
NTSC PWM FREQ
1DD
Dimmer frequency setting
PAL PWM FREQ
1DD
Dimmer frequency setting
NTSC PWM DUTY
0
Dimmer duty setting
PAL PWM DUTY
0
Dimmer duty setting
TV GAIN
OFF
Audio gain setting in TV mode
ERROR NO RESET
0
Lamp error count & reset
PUBLIC MODE
OFF
Public mode
2
COM BIAS 60
59
Counter bias adjustment (60Hz)
COM BIAS 50
39
Counter bias adjustment (50Hz)
PAL TAMP
21
TAMP adustment
SECAM TAMP
21
TAMP adustment
CUTOFF RX1, GX1, BX1
45
cutoff adjustment
CUTOFF RY1, GY1, BY1
RY1:75
cutoff adjustment
GY1:76
BY1:85
CUTOFF RX2, GX2, BX2
201
cutoff adjustment
CUTOFF RY2, GY2, BY2
RY2:230
cutoff adjustment
GY2:225
BY2:230
Y
00h
Data read value at TAMP adjustment
TAMP H
CA
Y upper limit setting at TAMP adjustment
TAMP L
BB
Y lower limit setting at TAMP adjustment
3
TV PAL CONT
48
Contrast setting (TV PAL)
TV SECAM CONT
48
Contrast setting (TV SECAM)
AV NTSC CONTRAST
45
Contrast setting (external NTSC)
AV PAL CONTRAST
45
Contrast setting (external PAL)
AV SECAM CONTRAST
45
Contrast setting (external SECAM)
AV PAL-M CONTRAST
45
Contrast setting (external PAL-M)
AV PAL-N CONTRAST
45
Contrast setting (external PAL-N)
AV PAL60 CONTRAST
45
Contrast setting (external PAL-60)
V SCROLL 60
Picture size
It changes with picture size.
V SCROLL 50
Picture size
It changes with picture size.
H SCROLL 60
Picture size
It changes with picture size.
H SCROLL 50
Picture size
It changes with picture size.
4
TV GEQ BAND1
1
Equalizer setting 1(TV)
TV GEQ BAND2
-1.5
Equalizer setting 2(TV)
TV GEQ BAND3
0.5
Equalizer setting 3(TV)
TV GEQ BAND4
0.5
Equalizer setting 4(TV)
TV GEQ BAND5
1
Equalizer setting 5(TV)
EXT GEQ BAND1
1
Equalizer setting 1(external input)
EXT GEQ BAND2
-1.5
Equalizer setting 2(external input)
EXT GEQ BAND3
0.5
Equalizer setting 3(external input)
EXT GEQ BAND4
0.5
Equalizer setting 4(external input)
EXT GEQ BAND5
1
Equalizer setting 5(external input)
AVC
4SEC
AVC setting
CARRIER MUTE
OFF
Audio output setting out of sync with TV
IGR THR
12D
IGR thresh level
5
MSP DATA
0
Audio IC MSP data write & read
MSP DATA
WAIT
Write & read execution
PRESCALE FM/AM-M
17
Pre-scale setting (M)
PRESCALE FM/AM-B
17
Pre-scale setting (B)
PRESCALE FM/AM-D
17
Pre-scale setting (D)
PRESCALE FM/AM-I
17
Pre-scale setting (I)
PRESCALE FM/AM-L
20
Pre-scale setting (L)
PRESCALE NICAM
40
Pre-scale setting (NICAM)
PRESCALE SCART
15
Pre-scale setting (external input)
FSP TEST
OFF
Audio test (FS mute ON/OFF)
0018H
1D
ONTA
1
6
I2C DATA
0
I2C bus control IC data write & read
I2C DATA
WAIT
Write & read execution
CBW
1
Chroma band pass setting
NOSEL
3
Comb filter setting
DDR
1
Comb filter setting
HDG
3
Comb filter setting
16
LC-22SV2E
Page
Item
Initial setting Function
Adjust/modify
6
VDG
0
Comb filter setting
VPK
0
Comb filter setting
KILVL 08
8
Color killer level setting
KILHY 05
5
Color killer hysteresis setting
VSYNC DELAY
7
Vsync delay control setting
DVC0
-720
Crystal oscillator center frequency adjustment
AUTO LCK
400
Crystal oscillator line-locked mode setting
7
VPC DATA
0
Video IC VPC data write & read
VPC DATA
WAIT
Write & read execution
TEST PATTERN
0
VPC test pattern select
AUTO LDLY
0
Y/C phase setting
DVD NTSC CR
18
Color density setting(component)
DVD NTSC CB
16
Color density setting(component)
DVD NTSC TINT
0
Color tone setting(component)
DVD NTSC BRIGHTNESS
71
Brightness setting(component)
DVD NTSC CONTRAST
25
Video setting(component)
DVD NTSC P FILTER
0
Peaking filter setting(component)
DVD NTSC H-PEAKING
3
Picture quality setting(component)
DVD NTSC BRIGHT2
8
Brightness setting 2(component)
DVD NTSC CONTRAST2
45
Video setting 2(component)
8
DVD PAL CR
23
Color density setting(component)
DVD PAL CB
19
Color density setting(component)
DVD PAL TINT
0
Color tone setting(component)
DVD PAL BRIGHTNESS
71
Brightness setting(component)
DVD PAL CONTRAST
25
Video setting(component)
DVD PAL P FILTER
0
Peaking filter setting(component)
DVD PAL H-PEAKING
3
Picture quality setting(component)
DVD PAL BRIGHT2
8
Brightness setting 2(component)
DVD PAL CONTRAST2
45
Video setting 2(component)
9
N358 AV COLOR
1800
Color density setting(composite,S-video)
N358 AV TINT
70
Color tone setting(composite,S-video)
N358 BRIGHTNESS
10
Brightness setting(TV,composite,S-video)
N358 PEAKING FILTER
0
Peaking filter setting(TV,composite,S-video)
N358 AV H-PEAKING
3
Picture quality setting(composite,S-video)
N358 AVO START
145
Horizontal position setting
N358 SFIF
8
Horizontal position setting
N358 SCINC1
1078(Panorama) Roundness setting
1600(other)
N358 AV LDLY
0
Y/C phase setting(composite,S-video)
10
N443 AV COLOR
1800
Color density setting(composite,S-video)
N443 AV TINT
70
Color tone setting(composite,S-video)
N443 BRIGHTNESS
10
Brightness setting(TV,composite,S-video)
N443 PEAKING FILTER
0
Peaking filter setting(TV,composite,S-video)
N443 AV H-PEAKING
3
Picture quality setting(composite,S-video)
N443 AVO START
145
Horizontal position setting
N443 SFIF
8
Horizontal position setting
N443 SCINC1
1078(Panorama) Roundness setting
1600(other)
N443 AV LDLY
-2
Y/C phase setting(composite,S-video)
11
PAL TV COLOR
1750
Color density setting(TV)
PAL AV COLOR
1800
Color density setting(composite,S-video)
PAL TV TINT
70
Color tone setting(TV)
PAL AV TINT
70
Color tone setting(composite,S-video)
PAL BRIGHTNESS
10
Brightness setting(TV,composite,S-video)
PAL PEAKING FILTER
0
Peaking filter setting(TV,composite,S-video)
PAL TV H-PEAKING
3
Picture quality setting(TV)
PAL AV H-PEAKING
3
Picture quality setting(composite,S-video)
PAL AVO START
145
Horizontal position setting
PAL SFIF
13
Horizontal position setting
PAL SCINC1
1078(Panorama) Roundness setting
1600(other)
PAL TV LDLY
0
Y/C phase setting(TV)
PAL AV LDLY
-2
Y/C phase setting(composite,S-video)
12
SECAM TV COLOR
1750
Color density setting(TV)
SECAM AV COLOR
1800
Color density setting(composite,S-video)
SECAM TV TINT
70
Color tone setting(TV)
SECAM AV TINT
70
Color tone setting(composite,S-video)
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