Read Sharp 37GT-27H (serv.man5) Service Manual online
5
37GT-27H
Indicates operative Service Mode
Auto Gain Control
Auto Frecquency Control Fine
Auto Frecquency Control Coarse
Auto Frecquency Control Fine Not available in
Auto Frecquency Control Coarse this model
Horizontal Shift
Vertical Shift
Verical Amplitud
Red Gain
Green Gain
Blue Gain
Red Cut Off
Green Cut Off
NVM Data Change
Auto Gain Control
Auto Frecquency Control Fine
Auto Frecquency Control Coarse
Auto Frecquency Control Fine Not available in
Auto Frecquency Control Coarse this model
Horizontal Shift
Vertical Shift
Verical Amplitud
Red Gain
Green Gain
Blue Gain
Red Cut Off
Green Cut Off
NVM Data Change
SERVICE ADJUSTMENTS
Service Mode Function
XXXX
XX
XX
XX
POS (Green)
VALUE (Red)
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
-SERV-
AGC
AFT F
AFT C
AFT FL
AFT CL
H-SHFT
V-SHFT
V-AMPL
GAIN R
GAIN G
GAIN B
CUT R
CUT G
NVM
AGC
AFT F
AFT C
AFT FL
AFT CL
H-SHFT
V-SHFT
V-AMPL
GAIN R
GAIN G
GAIN B
CUT R
CUT G
NVM
Displayed
on screen
on screen
Hexadecimal /
Decim. Range
Decim. Range
Function
00
∼
3F
02
∼
FE
00
∼
0F
02
∼
FE
00
∼
0F
00
∼
FF
00
∼
3F
00
∼
0F
00
∼
3F
00
∼
3F
00
∼
3F
00
∼
3F
00
∼
3F
00
∼
3F
00
∼
FF
1. Turn the receiver on and ensure that it is tuned into a test pattern.
2. Turn the receiver off using the mains switch.
3. Press the volume down and channel up buttons together. See Figure 1.
4. Continue pressing the volume down and channel up buttons while turning
the mains on using the mains switch. See Fig. 1.
the mains on using the mains switch. See Fig. 1.
5. Keep pressing the volume down and channel up buttons until the picture appears.
6. Release the two buttons and the receiver is now in the Service Mode.
To move between the various service mode functions, use the channel up and down buttons.
Use the volume buttons to change the data to the desired value.
The data will be stored automatically when exiting the Service Mode.
To exit the service mode, press the stand-by button on the remote control or turn the receiver off
with the mains switch.
Use the volume buttons to change the data to the desired value.
The data will be stored automatically when exiting the Service Mode.
To exit the service mode, press the stand-by button on the remote control or turn the receiver off
with the mains switch.
On Screen
Display
(Blue)
Display
(Blue)
}
3
4
CH
All required adjustments for servicing this TV set, may be done in «Service Mode», excepting G2 and FOCUS.
How to access the Service Mode
Figure 1
FASTEXT
6
37GT-27H
Adjustment of Data within the NVM memory
To access the NVM memory, press the channel up button on the remote control until the NVM setting is reached. Note that
the NVM address is shown in green and the NVM value is shown in red. Each of the NVM values are stored as a
hexadecimal code, each code comprises of two hexadecimal numbers. Each of these numbers will break down into a four
bit binary code as in the example below.
the NVM address is shown in green and the NVM value is shown in red. Each of the NVM values are stored as a
hexadecimal code, each code comprises of two hexadecimal numbers. Each of these numbers will break down into a four
bit binary code as in the example below.
Hex code A 5
Binary code 1010 0101
Button on remote to toggle Bit 7654 3210
Binary code 1010 0101
Button on remote to toggle Bit 7654 3210
In the example given above, the hexadecimal code is A5, the binary equivalent is 1010 0101. The remote control button to
toggle each bit on or off (1 or a 0) is shown below the binary code. Therefore to change this to A6, remote control buttons
1 then 0 would have to be pressed.
toggle each bit on or off (1 or a 0) is shown below the binary code. Therefore to change this to A6, remote control buttons
1 then 0 would have to be pressed.
Note: In the tables below appear b0, b1, b2,.........,b7, whose indicate the bit number:
b0 is the Least Significant Bit (LSB).
b7 is the Most Significant Bit (MSB).
b7 is the Most Significant Bit (MSB).
VALUE
DESCRIPTION
ADDRESS
44
RESERVED
b7: x
b6: CO_BLK
b5: SVHS
b4: FRAME_BLK
b3: BLACK_ST_REF
b2: S_STD2
b1: S_STD1
b0: QSS
b7: x
b6: CO_BLK
b5: SVHS
b4: FRAME_BLK
b3: BLACK_ST_REF
b2: S_STD2
b1: S_STD1
b0: QSS
0F
38
RESERVED
b7: BLACK_ST
b6: COR
b5: CK_ON
b6: COR
b5: CK_ON
b4: VID_ST2
b3: VID_ST1
b2: CK_1
b1: CK_2
b0: CK_3
b6: COR
b5: CK_ON
b6: COR
b5: CK_ON
b4: VID_ST2
b3: VID_ST1
b2: CK_1
b1: CK_2
b0: CK_3
10
A5
SIGNATURE VALUE
11
32
TEMPERATURE RED
12
32
TEMPERATURE GREEN
13
32
TEMPERATURE BLUE
14
26
VERTICAL SHIFT
15
32
RED CUTOFF
16
32
GREEN CUTOFF
17
1F
HORIZONTAL SHIFT
18
37
VERTICAL AMPLITUDE
19
08
LUMA DELAY
b6-b5:AUDIO OUT
b4-b5: 00
b3: LUMA DELAY SHIFT
b1-b2:00
b0: V OUT INHIBITION
b6-b5:AUDIO OUT
b4-b5: 00
b3: LUMA DELAY SHIFT
b1-b2:00
b0: V OUT INHIBITION
1 A
VALUE
DESCRIPTION
ADDRESS
32
TEMPERATURE RED
00
32
TEMPERATURE GREEN
01
32
TEMPERATURE BLUE
02
26
VERTICAL SHIFT 50HZ
03
32
RED CUTOFF
04
32
GREEN CUTOFF
05
1F
HORIZONTAL SHIFT 50HZ
06
37
VERTICAL AMPLITUDE
07
08
LUMA DELAY
b6-b5:AUDIO OUT
b4-b5: 00
b3: LUMA DELAY SHIFT
b1-b2:00
b0: V OUT INHIBITION
b6-b5:AUDIO OUT
b4-b5: 00
b3: LUMA DELAY SHIFT
b1-b2:00
b0: V OUT INHIBITION
08
2C
CAG ADJUSTEMENT VALUE
09
63
TV OPTIONS
b7:
ENGLISH OSD
b6: AUTOINSTALLATION FIRST
OPTION
b5: CHILD LOCK ENABLED
b4: X
b3:
OPTION
b5: CHILD LOCK ENABLED
b4: X
b3:
UHF BAND ONLY
b2:
BASIC HOTEL MODE
b1: AV FRONT ENABLED
b0: FP VERSION
b0: FP VERSION
0A
3A
AFT COARSE FOR B/G AND L'
SYSTEMS
0B
38
AFT FINE FOR B/G AND L
SYSTEMS
0C
92
AFT FINE FOR L' SYSTEMS
0D
FF
VOLUME LIMIT (MAXIMUM)
0E
NVM List Description
7
37GT-27H
VALUE
DESCRIPTION
ADDRESS
2C
CAG ADJUSTEMENT VALUE
1B
F0
TV OPTIONS
b7:
ENGLISH OSD
b6: AUTOINSTALLATION FIRST
OPTION
b5: CHILD LOCK ENABLED
b4: X
b3:
OPTION
b5: CHILD LOCK ENABLED
b4: X
b3:
UHF BAND ONLY
b2:
BASIC HOTEL MODE
b1: AV FRONT ENABLED
b0: FP VERSION
b0: FP VERSION
1C
3A
AFT COARSE FOR B/G AND L'
SYSTEMS
1D
60
AFT FINE FOR B/G AND L
SYSTEMS
1E
B0
AFT FINE FOR L' SYSTEMS
1F
FF
VOLUME LIMIT (MAXIMUM)
20
43
RESERVED
b7: X
b6: CO_BLK
b5: SVHS
b4: FRAME_BLK
b3: BLACK_ST_REF
b2: S_STD2
b1: S_STD1
b0: QSS
b7: X
b6: CO_BLK
b5: SVHS
b4: FRAME_BLK
b3: BLACK_ST_REF
b2: S_STD2
b1: S_STD1
b0: QSS
21
20
RESERVED
b7: BLACK_ST
b6: COR
b5: CK_ON
b6: COR
b5: CK_ON
b4: VID_ST2
b3: VID_ST1
b2: CK_1
b1: CK_2
b0: CK_3
b6: COR
b5: CK_ON
b6: COR
b5: CK_ON
b4: VID_ST2
b3: VID_ST1
b2: CK_1
b1: CK_2
b0: CK_3
22
A5
SIGNATURE VALUE
23
32
TEMPERATURE RED
24
32
TEMPERATURE GREEN
25
32
TEMPERATURE BLUE
26
26
VERTICAL SHIFT
27
32
RED CUTOFF
28
32
GREEN CUTOFF
29
1F
HORIZONTAL SHIFT
2 A
37
VERTICAL AMPLITUDE
2B
08
LUMA DELAY
b6-b5:AUDIO OUT
b4-b5: 00
b3: LUMA DELAY SHIFT
b1-b2:00
b0: V OUT INHIBITION
b6-b5:AUDIO OUT
b4-b5: 00
b3: LUMA DELAY SHIFT
b1-b2:00
b0: V OUT INHIBITION
2C
2C
CAG ADJUSTEMENT VALUE
2D
F0
TV OPTIONS
b7:
ENGLISH OSD
b6: AUTOINSTALLATION FIRST
OPTION
b5: CHILD LOCK ENABLED
b4: X
b3:
OPTION
b5: CHILD LOCK ENABLED
b4: X
b3:
UHF BAND ONLY
b2:
BASIC HOTEL MODE
b1: AV FRONT ENABLED
b0: FP VERSION
b0: FP VERSION
2E
3A
AFT COARSE FOR B/G AND L'
SYSTEMS
2F
VALUE
DESCRIPTION
ADDRESS
60
AFT FINE FOR B/G AND L
SYSTEMS
30
B0
AFT FINE FOR L' SYSTEMS
31
FF
VOLUME LIMIT (MAXIMUM)
32
43
RESERVED
b7: X
b6: CO_BLK
b5: SVHS
b4: FRAME_BLK
b3: BLACK_ST_REF
b2: S_STD2
b1: S_STD1
b0: QSS
b7: X
b6: CO_BLK
b5: SVHS
b4: FRAME_BLK
b3: BLACK_ST_REF
b2: S_STD2
b1: S_STD1
b0: QSS
33
20
RESERVED
b7: BLACK_ST
b6: COR
b5: CK_ON
b6: COR
b5: CK_ON
b4: VID_ST2
b3: VID_ST1
b2: CK_1
b1: CK_2
b0: CK_3
b6: COR
b5: CK_ON
b6: COR
b5: CK_ON
b4: VID_ST2
b3: VID_ST1
b2: CK_1
b1: CK_2
b0: CK_3
34
A5
SIGNATURE VALUE
35
A5
SIGNATURE VALUE
37
20
NVM SATURATION
38
05
OFFSET FOR VOLUME CURVE
39
1F
VOLUME VALUE (DECIMAL)
3A
31
CONTRAST
3B
19
COLOR SATURATION
3C
20
BRIGHTNESS
3D
07
0,0,P5,P4,P3,P2,P1,P0
LUMA PEAKING VALUE LUPK
3E
01
CURRENT PROGRAM
3F
00
TV STATUS: 00H
:
TV ON
FFH
:
TV STBY
40
36
FACTORY CONTRAST
41
19
FACTORY COLOR SATURATION
42
20
FACTORY BRIGHTNESS
43
06
FACTORY PEAKING
b5-b0: LUMA PEAKING VALUE
44
16
END OF HORIZONTAL CLAMP
PULSE
45
00
OSD STATUS
b6: X
b5: PIN ENABLED
b4: CLOCK
b3 R8/30
b2: FRONT LOCK
b1: AV LOCK
b0: E_NORMALIZED PICTURE
b5: PIN ENABLED
b4: CLOCK
b3 R8/30
b2: FRONT LOCK
b1: AV LOCK
b0: E_NORMALIZED PICTURE
46
42
TXT AND OSD OPTIONS
b7: X
b6: ROW 8/30 (TXT)
PREPROCESSING FOR UK
b5: PASSWORD ON/OFF
b4: OSD REMAINING TIME
b3: SIZE OSD PROG: 0= 14”
1= 21”
b2: VPS LOCK ON / OFF
b1: FLOF
b0: TOP
b6: ROW 8/30 (TXT)
PREPROCESSING FOR UK
b5: PASSWORD ON/OFF
b4: OSD REMAINING TIME
b3: SIZE OSD PROG: 0= 14”
1= 21”
b2: VPS LOCK ON / OFF
b1: FLOF
b0: TOP
47
8
37GT-27H
VALUE
DESCRIPTION
ADDRESS
00
BEGINING OF HORIZONTAL
CLAMP PULSE.
48
1F
VOLTAGE TO CHANGE TO L-L'
SYSTEM
49
1F
VOLTAGE TO CHANGE TO L-L'
SYSTEM
4A
1A
VERTICAL SYNC DELAY FOR TXT.
4B
69
SLICER CONTROL TTX ->
NIBBLE_UP = /NIBBLE_DOWN
4C
F0
CHANNEL SEARCH SPEED [UHF]
4D
F0
CHANNEL SEARCH SPEED [VHL]
4E
F0
CHANNEL SEARCH SPEED [VHH]
4F
AA
HORIZONTAL SYNC DELAY
50
00
PASSWORD 1
st
DIGIT
51
00
PASSWORD 2
nd
DIGIT
52
00
PASSWORD 3
rd
DIGIT
53
00
PASSWORD 4
th
DIGIT
54
01
CHARACTER SET (LANGUAGE
TXT)
55
40
MAXIMUM TUNNING VOLTAGE
DECREASE DURING PROG.
CHANGE (IN CASE IT IS NOT
FOUND THE SYNCHRO)
56
VALUE
DESCRIPTION
ADDRESS
00
b0: HOTEL MODE: DEACTIVATE
THE TV PANEL FRONTAL KEY.
IT STARTS UP IN SCART
MODE
WHEN SSW SIGNAL IS GIVEN
b1: SPECIAL HOTEL MODE FOR
S.E.I.S. THE TIME CONSTANT
TO VCR MODE
b2: OPTION FOR DK_SYSTEM.
b3: AUTOINSTALL ON.
b4: COUNTRY SELECTION
MENU.
b5-b6: RGB DACs LEVEL.
b7: VPS_LOCK_SET
THE TV PANEL FRONTAL KEY.
IT STARTS UP IN SCART
MODE
WHEN SSW SIGNAL IS GIVEN
b1: SPECIAL HOTEL MODE FOR
S.E.I.S. THE TIME CONSTANT
TO VCR MODE
b2: OPTION FOR DK_SYSTEM.
b3: AUTOINSTALL ON.
b4: COUNTRY SELECTION
MENU.
b5-b6: RGB DACs LEVEL.
b7: VPS_LOCK_SET
57
0F
TIMING PACKET SEARCH, VPS.
58
20
VERTICAL SHIFT FOR 60HZ
59
BB
ONE STEP DOWN WHEN THE
FIRST SYNCHRO LOOSING IS
PRODUCED
5A
15
UP MAXIMUM STEP No DURING
SEARCHING (
).
5B
00
CORRECTION VALUE OF V-SHIFT
IN ORDER TO BE INDEPENDENT
TO V-AMP BAND OFFSET SPEED
DURING SEARCHING
5C
15
AUTOMATIC PEAK RGB
REGULATION: PIC REGULATOR
5D
D2
BAND OFFSET SPEED DURING
SEARCHING (
)
NIBBLE_UP=/ NIBBLE_DOWN
5E
00
FREE
5F
10
TIMING PACKET SEARCH, 8/30.
60
----
RESERVED
61
a
FF
PIF/AGC Adjustment
1. “AFT C” should not be adjusted. The value should be fixed to 0A.
2. “AFT F” Adjustment
2.1. Connect the output of SSG (Standard Signal Generator) to the tuner IF output terminal.
·SSG output 38.9 MHz (CW) ± 5 KHz.
·SSG output level: approx. 90 dB/uV.
2.2. Enter into Service Mode.
2.3. Select parameter AFT F.
2.4. Push «CALL» button on R/C, see Page 43. «AFT OK» will appear in On Screen Display (OSD).
2.5. Switch set OFF and ON again, setting is now memorized.
2.1. Connect the output of SSG (Standard Signal Generator) to the tuner IF output terminal.
·SSG output 38.9 MHz (CW) ± 5 KHz.
·SSG output level: approx. 90 dB/uV.
2.2. Enter into Service Mode.
2.3. Select parameter AFT F.
2.4. Push «CALL» button on R/C, see Page 43. «AFT OK» will appear in On Screen Display (OSD).
2.5. Switch set OFF and ON again, setting is now memorized.
3. RF-AGC Adjustment
3.1. Receive the “ COLOUR Bar” Signal (Channel E-10). Signal strength: 53dB/
3.1. Receive the “ COLOUR Bar” Signal (Channel E-10). Signal strength: 53dB/
µ
V.
3.2. Enter into Service Mode.
3.3. Select parameter AGC.
3.4. Push “CALL” button on R/C, see Page 43. “BUS STOP” will appear in OSD.
3.5. Push “GREEN” button on R/C (to exit Bus Stop Mode).
3.6. Switch set OFF and ON again, setting is now memorized.
3.3. Select parameter AGC.
3.4. Push “CALL” button on R/C, see Page 43. “BUS STOP” will appear in OSD.
3.5. Push “GREEN” button on R/C (to exit Bus Stop Mode).
3.6. Switch set OFF and ON again, setting is now memorized.
