Sharp LC-20C2E (serv.man2) Service Manual ▷ View online
25
LC-13B2H/M
LC-15B2H/M
LC-20B2H/M
LC-15B2H/M
LC-20B2H/M
3
ADRESS
I
2
C bus sub address switching input
4
SCL
I
2
C bus serial clock line
5
SDA
I
2
C bus serial data line
6
MB
SUPPLY POWER 5V
7
BP
SUPPLY POWER 5V
8
9
9
BT
SUPPLY POWER 31V
10
11
IF OUT
IF monitor output
12
SAW SW
Saw filter switching
13
MODE1
B, G, D, K, I, M and N system switching
14
MODE2
B, G, D, K, I, M and N system switching
15
SIF OUT
SIF output
16
AUDIO OUT
Audio detection output
17
MUTE
Mute input
18
AFT
AFT output
19
VIDEO OUT
Video detection output
26
LC-13B2H/M
LC-15B2H/M
LC-20B2H/M
LC-15B2H/M
LC-20B2H/M
Key operation: Basically the current operating method should be used.
However the cursor key should be used. The cursor “up/down” keys are used to select an item. The
cursor “right/left” keys are used to excute the item. When the cursor key is positioned at the top, the
cursor can be moved to the top item on the previous page through manual memory input.
cursor “right/left” keys are used to excute the item. When the cursor key is positioned at the top, the
cursor can be moved to the top item on the previous page through manual memory input.
Page Item
MIN value MAX value Initial value Initial value Initial value Description
Servicing
for 13
for 15
for 20
· Basic setting - Depending on destination
1
B-ADJ
0
255
122
122
122
5V adjustment
Must not be changed.
MODEL
B2H
B2H
B2H
Model name selection
Used in initializing. Must not
be changed in other than
initializing. If it is changed,
readjustment is needed.
be changed in other than
initializing. If it is changed,
readjustment is needed.
INCH SIZE
13
15
20
Inch size selection
Used in initializing. Must not
be changed in other than
initializing. If it is changed,
readjustment is needed.
be changed in other than
initializing. If it is changed,
readjustment is needed.
NTSC PWM FREQ
0
FFF
OCO
OCO
OCO
NTSC light control frequency setting
Must not be changed.
PAL PWM FREQ
0BD
0BD
0BD
PAL light control frequency setting
Must not be changed.
NTSC PWM DUTY
0
100
0
0
0
NTSC light control duty setting
Must not be changed.
PAL PWM DUTY
0
100
0
0
0
PAL light control duty setting
Must not be changed.
TV GAIN
OFF
OFF
OFF
Auto gain setting for TV
Must not be changed.
ERROR NO RESET
0
0
0
Lamp error count and reset
Refer to lamp error detection.
PUBLIC MODE
ON
ON
ON
Public mode setting
Must not be changed.
· Video adjustment (Common bias, AGC fixed gain, White balance)
2
COM BIAS
0
255
57
39
106
Opposite bias adjustment
Refer to the adjusting method.
NTSC TAMP
0
63
24
24
21
TAMP adjustment (NTSC)
Refer to the adjusting method.
PAL TAMP
0
63
24
24
21
TAMP adjustment (PAL)
Refer to the adjusting method.
SECAM TAMP
0
63
24
24
21
TAMP adjustment (SECAM)
Refer to the adjusting method.
PAL-M TAMP
0
63
24
24
21
TAMP adjustment (PAL-M)
Refer to the adjusting method.
PAL-N TAMP
0
63
24
24
21
TAMP adjustment (PAL-N)
Refer to the adjusting method.
RCUTOFF
-15
15
-5
-5
-5
White balance adjustment (red)
Refer to the adjusting method.
The adjustment value should
be an odd number.
The adjustment value should
be an odd number.
GCUTOFF
-15
15
0
0
0
Green cutoff adjustment
Must not be changed.
BCUTOFF
-15
15
-1
-1
3
White balance adjustment (blue)
Refer to the adjusting method.
The adjustment value should
be an odd number.
The adjustment value should
be an odd number.
G3
0
FF
READ value
Must not be changed
B3
0
FF
READ value
Must not be changed
R3
0
FF
READ value
Must not be changed
G1
0
FF
READ value
Must not be changed
B4
0
FF
READ value
Must not be changed
Y
0
FF
TAMP adjustment
Refer to the adjusting method.
TAMP H
0
FF
C2
C2
CA
Higher limit value of TAMP setting
Must not be changed.
TAMP L
0
FF
B8
B8
BB
Lower limit value of TAMP setting
Must not be changed.
· Video adjustment (Contrast)
3
TV NTSC CONT
0
63
48
48
51
NTSC video setting initial value (TV)
Must not be changed.
TV PAL CONT
48
48
48
PAL video setting initial value (TV)
Must not be changed.
TV SECAM CONT
48
48
48
SECAM video setting initial value (TV)
Must not be changed.
TV PAL-M CONT
48
48
48
PAL-M video setting initial value (TV)
Must not be changed.
TV PAL-N CONT
48
48
48
PAL-N video setting initial value (TV)
Must not be changed.
AV NTSC CONT
0
63
48
48
49
NTSC video setting initial value
Must not be changed.
(composite)
AV PAL CONTRAST
48
48
48
PAL-M video setting initial value
Must not be changed.
(composite)
AV SECAM CONTRAST
48
48
48
SECAM video setting initial value
Must not be changed.
(composite)
AV PAL-M CONTRAST
48
48
48
PAL-M video setting initial value
Must not be changed.
(composite)
AV PAL-N CONTRAST
48
48
48
PAL-N video setting initial value
Must not be changed.
(composite)
AV PAL60 CONTRAST
48
48
48
PAL60 video setting initial value
Must not be changed.
(composite)
G3
0
FF
READ value
Must not be changed.
B3
0
FF
READ value
Must not be changed.
R3
0
FF
READ value
Must not be changed.
G1
0
FF
READ value
Must not be changed.
B4
0
FF
READ value
Must not be changed.
Y
0
FF
READ value
Must not be changed.
5. DESCRIPTION OF ADJUSTING PROCEDURE
27
LC-13B2H/M
LC-15B2H/M
LC-20B2H/M
LC-15B2H/M
LC-20B2H/M
Page Item
MIN value MAX value Initial value Initial value Initial value Description
Servicing
for 13
for 15
for 20
· Audio adjustment (Equalizer, AVC, Carrier MUTE)
4
TV GEQ BAND1
-12
12
1.0
1.0
0.0
Equalizer setting 1 (TV)
Must not be changed.
TV GEQ BAND2
-12
12
0.0
1.0
0.0
Equalizer setting 2 (TV)
Must not be changed.
TV GEQ BAND3
-12
12
0.0
-1.0
1.0
Equalizer setting 3 (TV)
Must not be changed.
TV GEQ BAND4
-12
12
-1.5
-2.0
0.5
Equalizer setting 4 (TV)
Must not be changed.
TV GEQ BAND5
-12
12
-2.0
-2.0
-1.5
Equalizer setting 5 (TV)
Must not be changed.
EXT GEQ BAND1
-12
12
1.0
1.0
0.0
Equalizer setting 1 (composite)
Must not be changed.
EXT GEQ BAND2
-12
12
0.0
1.0
0.0
Equalizer setting 2 (composite)
Must not be changed.
EXT GEQ BAND3
-12
12
0.0
-1.0
1.0
Equalizer setting 3 (composite)
Must not be changed.
EXT GEQ BAND4
-12
12
-1.5
-2.0
0.5
Equalizer setting 4 (composite)
Must not be changed.
EXT GEQ BAND5
-12
12
-2.0
-2.0
-1.5
Equalizer setting 5 (composite)
Must not be changed.
AVC
OFF
OFF
OFF
AVC setting
Must not be changed.
CARRIER MUTE
ON
ON
ON
Audio output setting at the time of no
Must not be changed.
TV synchronization
IGR THR
12D
12D
12D
IGR determination level adjustment
Must not be changed.
(not used in B2U)
· Audio adjustment (pre-scale)
5
MSP DATA
0
0
0
Audio IC MSP data WRITE and READ
Must not be changed.
MSP DATA
WAIT
WAIT
WAIT
WRITE and READ execution
Must not be changed.
PRESCALE FM/AM-M
0
127
16
16
16
Pre-scale setting (TV)
Must not be changed.
PRESCALE FM/AM-B
8
8
8
Pre-scale setting (TV)
Must not be changed.
PRESCALE FM/AM-D
8
8
8
Pre-scale setting (TV)
Must not be changed.
PRESCALE FM/AM-I
8
8
8
Pre-scale setting (TV)
Must not be changed.
PRESCALE FM/AM-L
8
8
8
Pre-scale setting (TV)
Must not be changed.
PRESCALE NICAM
20
20
20
Pre-scale setting (TV)
Must not be changed.
PRESCALE SCART
0
127
13
13
13
Pre-scale setting (composite)
Must not be changed.
FSP TEST
OFF
OFF
OFF
For audio test (FSMUTE ON/OFF)
Must not be changed.
0018H ST
1D
1D
1D
Must not be changed.
ONTA
1
1
1
Must not be changed.
· Video adjustment (VPC setting)
6
I
2
C DATA
0
0
0
I
2
C BUS control IC data WRITE and READ
Must not be changed.
I
2
C DATA
WAIT
WAIT
WAIT
WRITE and READ execution
Must not be changed.
CBW
0
3
1
1
1
Chroma band pass setting
Must not be changed.
NOSEL
0
3
3
3
3
Comb filter setting
Must not be changed.
DDR
0
3
0
0
1
Comb filter setting
Must not be changed.
HDG
0
3
2
2
3
Comb filter setting
Must not be changed.
VDG
0
3
1
1
0
Comb filter setting
Must not be changed.
VPK
0
15
3
3
0
Comb filter setting
Must not be changed.
KILVL 08
0
8
8
8
Color killer level setting
Must not be changed.
KILHY 05
0
5
5
5
Color killer hysteresis setting
Must not be changed.
VSYNC DELAY
0
255
7
7
7
V synchronous phase setting
Must not be changed.
DVCO
-2048
2047
-720
-720
-720
DVCO setting
Must not be changed.
AUTO LCK
0
4094
1
1
1
Line lock mode setting
Must not be changed.
· Video adjustment (NTSC) for DVD
7
VPC DATA
0
0
0
Video IC VPC data WRITE and READ
Must not be changed.
VPC DATA
WAIT
WAIT
WAIT
WRITE and READ
Must not be changed.
TEST PATTERN
0
0
0
VPC test pattern selection
Refer to the adjustment process
mode test pattern.
mode test pattern.
AUTO LDLY
-7
1
-2
-2
0
Automatic Y/C phase setting
Must not be changed.
DVD NTSC CR
0
63
25
25
25
Color intensity setting initial value
Must not be changed.
(component)
DVD NTSC CB
0
63
28
28
25
Color intensity setting initial value
Must not be changed.
(component)
DVD NTSC TINT
-31
31
7
7
7
Tint setting initial value (component)
Must not be changed.
DVD NTSC BRIGHTNESS
-128
127
64
64
68
Brightness setting initial value
Must not be changed.
(component)
DVD NTSC CONTRAST
0
63
28
28
26
Video setting initial value (component)
Must not be changed.
DVD NTSC P FILTER
0
2
0
0
0
Peaking filter setting (component)
Must not be changed.
DVD NTSC H-PEAKING
0
7
3
3
3
Image quality setting initial value
Must not be changed.
(component)
DVD NTSC BRIGHT2
-128
127
9
8
8
Brightness setting 2 initial value
Must not be changed.
(component)
DVD NTSC CONTRAST2
0
63
48
48
48
Tint setting 2 initial value (component)
Must not be changed.
28
LC-13B2H/M
LC-15B2H/M
LC-20B2H/M
LC-15B2H/M
LC-20B2H/M
Page Item
MIN value MAX value Initial value Initial value Initial value Description
Servicing
for 13
for 15
for 20
· Video adjustment (PAL) for DVD
8
DVD PAL CR
0
63
31
31
24
Color intensity setting initial value
Must not be changed.
(component)
DVD PAL CB
0
63
31
31
24
Color intensity setting initial value
Must not be changed.
(component)
DVD PAL TINT
-31
31
0
0
9
Tint setting initial value (component)
Must not be changed.
DVD PAL BRIGHTNESS
-128
127
64
64
68
Brightness setting initial value
Must not be changed.
(component)
DVD PAL CONTRAST
0
63
27
27
26
Video setting initial value (component)
Must not be changed.
DVD PAL P FILTER
0
2
0
0
0
Peaking filter setting (component)
Must not be changed.
DVD PAL H-PEAKING
0
7
3
3
3
Image quality setting initial value
Must not be changed.
(component)
DVD PAL BRIGHT2
-128
127
9
8
8
Brightness setting 2 initial value
Must not be changed.
(component)
DVD PAL CONTRAST2
0
63
48
48
48
Tint setting 2 initial value (component)
Must not be changed.
· TV/Video image adjustment (N358)
9
N358 TV COLOR
0
4094
2900
3100
2900
Color intensity setting initial value (TV)
Must not be changed.
N358 AV COLOR
0
4094
2900
3100
2900
Color intensity setting initial value
Must not be changed.
(composite)
N358 TV TINT
-512
512
70
70
70
Tint setting initial value (TV)
Must not be changed.
N358 AV TINT
-512
512
70
70
70
Tint setting initial value (composite)
Must not be changed.
N358 BRIGHTNESS
-128
127
12
10
10
Brightness setting initial value
Must not be changed.
(TV, composite)
N358 PEAKING FILTER
0
2
0
0
0
Peaking filter setting (TV, composite)
Must not be changed.
N358 TV H-PEAKING
0
7
3
3
3
Image quality setting initial value (TV)
Must not be changed.
N358 AV H-PEAKING
0
7
3
3
3
Image quality setting initial value
Must not be changed.
(composite)
N358 AVO START
0
1023
152
152
152
Horizontal position setting
Must not be changed.
N358 SFIF
0
4095
0
0
0
Horizontal position setting
Must not be changed.
N358 SCINC1
1024
4095
1623
1623
1623
Circularity setting
Must not be changed.
N358 TV LDLY
-7
1
-2
-2
0
Y/C phase setting (TV)
Must not be changed.
N358 AV LDLY
-7
1
-2
-2
0
Y/C phase setting (composite, S video) Must not be changed.
· TV/Video image adjustment (N443)
· TV/Video image adjustment (PAL)
10
N443 TV COLOR
0
4094
2900
3100
2900
Color intensity setting initial value (TV)
Must not be changed.
N443 AV COLOR
0
4094
2900
3100
2900
Color intensity setting initial value
Must not be changed.
(composite)
N443 TV TINT
-512
512
70
70
70
Tint setting initial value (TV)
Must not be changed.
N443 AV TINT
-512
512
70
70
70
Tint setting initial value (composite)
Must not be changed.
N443 BRIGHTNESS
-128
127
12
10
10
Brightness setting initial value
Must not be changed.
(TV, composite)
N443 PEAKING FILTER
0
2
0
0
0
Peaking filter setting (TV, composite)
Must not be changed.
N443 TV H-PEAKING
0
7
3
3
3
Image quality setting initial value (TV)
Must not be changed.
N443 AV H-PEAKING
0
7
3
3
3
Image quality setting initial value
Must not be changed.
(composite)
N443 AVO START
0
1023
152
152
152
Horizontal position setting
Must not be changed.
N443 SFIF
0
4095
0
0
0
Horizontal position setting
Must not be changed.
N443 SCINC1
1024
4095
1623
1623
1623
Circularity setting
Must not be changed.
N443 TV LDLY
-7
1
-2
-2
-2
Y/C phase setting (TV)
Must not be changed.
N443 AV LDLY
-7
1
-2
-2
0
Y/C phase setting (composite, S video) Must not be changed.
11
PAL TV COLOR
0
4094
2900
3100
2900
Color intensity setting initial value (TV)
Must not be changed.
PAL AV COLOR
0
4094
2900
3100
2900
Color intensity setting initial value
Must not be changed.
(composite)
PAL TV TINT
-512
512
70
70
70
Tint setting initial value (TV)
Must not be changed.
PAL AV TINT
-512
512
70
70
70
Tint setting initial value (composite)
Must not be changed.
PAL BRIGHTNESS
-128
127
12
10
10
Brightness setting initial value
Must not be changed.
(TV, composite)
PAL PEAKING FILTER
0
2
0
0
0
Peaking filter setting (TV, composite)
Must not be changed.
PAL TV H-PEAKING
0
7
3
3
3
Image quality setting initial value (TV)
Must not be changed.
PAL AV H-PEAKING
0
7
3
3
3
Image quality setting initial value
Must not be changed.
(composite)
PAL AVO START
0
1023
152
152
152
Horizontal position setting
Must not be changed.
PAL SFIF
0
4095
0
0
0
Horizontal position setting
Must not be changed.
PAL SCINC1
1024
4095
1623
1623
1623
Circularity setting
Must not be changed.
PAL TV LDLY
-7
1
-2
-2
-2
Y/C phase setting (TV)
Must not be changed.
PAL AV LDLY
-7
1
-2
-2
-2
Y/C phase setting (composite, S video) Must not be changed.
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