Sharp 76GF-64H (serv.man3) Service Manual ▷ View online
5
76GF-64H
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 9
Fig. 8
Fig. 7
1−
1−
1−
1−
1− HORIZONTAL SHIFT
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, picture moves to the left.
c) When volume-down button is pressed, picture moves to the right.
d) Adjust the horizontal location to obtain picture centering (fig. 2).
b) When volume-up button is pressed, picture moves to the left.
c) When volume-down button is pressed, picture moves to the right.
d) Adjust the horizontal location to obtain picture centering (fig. 2).
2−
2−
2−
2−
2− E-W WIDTH
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, horizontal scanning increases.
c) When volume-down button is pressed, horizontal scanning decreases.
d) Adjust the horizontal amplitude to obtain 9% overscan (fig. 3).
b) When volume-up button is pressed, horizontal scanning increases.
c) When volume-down button is pressed, horizontal scanning decreases.
d) Adjust the horizontal amplitude to obtain 9% overscan (fig. 3).
3−
3−
3−
3−
3− PIN PHASE
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, slide pincushion changes.
c) When volume-down button is pressed, slide pincushion changes.
d) Adjust the PIN PHASE to obtain condition as in (fig. 4).
b) When volume-up button is pressed, slide pincushion changes.
c) When volume-down button is pressed, slide pincushion changes.
d) Adjust the PIN PHASE to obtain condition as in (fig. 4).
4−
4−
4−
4−
4− PIN AMPLITUDE
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, slide pincushion changes from
pincushion to barrel shape.
c) When volume-down button is pressed, slide pincushion changes from
pincushion to barrel shape.
d) Adjust the PIN AMPLITUDE to obtain condition as in (fig. 5).
b) When volume-up button is pressed, slide pincushion changes from
pincushion to barrel shape.
c) When volume-down button is pressed, slide pincushion changes from
pincushion to barrel shape.
d) Adjust the PIN AMPLITUDE to obtain condition as in (fig. 5).
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, slide pincushion changes from
pincushion to barrel shape.
c) When volume-down button is pressed, slide pincushion changes from
pincushion to barrel shape.
d) Adjust the CORNER AMPLITUD to obtain condition as in (fig.6).
b) When volume-up button is pressed, slide pincushion changes from
pincushion to barrel shape.
c) When volume-down button is pressed, slide pincushion changes from
pincushion to barrel shape.
d) Adjust the CORNER AMPLITUD to obtain condition as in (fig.6).
6−
6−
6−
6−
6− CORNER SYMETRY
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, slide pincushion changes from pincushion
to barrel shape.
c) When volume-down button is pressed, slide pincushion changes from
pincushion to barrel shape.
d) Adjust the CORNER SYMETRY to obtain condition as in (fig. 7).
b) When volume-up button is pressed, slide pincushion changes from pincushion
to barrel shape.
c) When volume-down button is pressed, slide pincushion changes from
pincushion to barrel shape.
d) Adjust the CORNER SYMETRY to obtain condition as in (fig. 7).
7−
7−
7−
7−
7− VERTICAL LINEARITY
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, upper picture scanning decreases and
lower picture scanning increase.
c) When volume-down button is pressed, upper picture scanning increases and
lower picture scanning decrease.
d) Adjust the vertical symmetry to obtain symmetry scanning between upper and
lower picture (fig. 8).
b) When volume-up button is pressed, upper picture scanning decreases and
lower picture scanning increase.
c) When volume-down button is pressed, upper picture scanning increases and
lower picture scanning decrease.
d) Adjust the vertical symmetry to obtain symmetry scanning between upper and
lower picture (fig. 8).
8−
8−
8−
8−
8− VERTICAL AMPLITUDE
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, vertical size of picture increases.
c) When volume-down button is pressed, vertical size of picture decreases.
d) Adjust the vertical size to obtain overscan (fig. 9).
b) When volume-up button is pressed, vertical size of picture increases.
c) When volume-down button is pressed, vertical size of picture decreases.
d) Adjust the vertical size to obtain overscan (fig. 9).
5−
5−
5−
5−
5− CORNER AMPLITUD
6
76GF-64H
Fig. 11
9−
9−
9−
9−
9− S-CORRECTION
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, upper and lower scanning decreases, and
center scanning increases.
c) When volume-down button is pressed, upper and lower scanning increases,
and center scanning decreases.
d) Adjust the S-CORRECTION to obtain a balance between upper, lower and
center (fig. 10).
b) When volume-up button is pressed, upper and lower scanning decreases, and
center scanning increases.
c) When volume-down button is pressed, upper and lower scanning increases,
and center scanning decreases.
d) Adjust the S-CORRECTION to obtain a balance between upper, lower and
center (fig. 10).
10−
10−
10−
10−
10− VERTICAL SHIFT
a) Internal pattern signal will be displayed.
b) When volume-up button is pressed, picture moves up.
c) When volume-down button is pressed, picture moves down.
d) Adjust the horizontal location to obtain picture centering (fig. 11).
b) When volume-up button is pressed, picture moves up.
c) When volume-down button is pressed, picture moves down.
d) Adjust the horizontal location to obtain picture centering (fig. 11).
COLOUR ADJUSTMENT
The following adjustments are only required when Picture Tube,
IC801 or IC1801 are changed:
IC801 or IC1801 are changed:
1. RED CUT OFF / GREEN CUT OFF / BLUE CUT OFF
2. RED GAIN / GREEN GAIN / BLUE BAIN
ACCESS TO NVM
a) Receive Philips pattern signal.
b) When Stand-by button is pressed (Remote Control
Unit), start
b) When Stand-by button is pressed (Remote Control
Unit), start
DVCO ADJUSTMENT (PAL)
Up/Down volume buttons are used to adjust the
contrast of the following items:
contrast of the following items:
-TELETEXT MIX MODE CONTRAST.
-TELETEXT CONTRAST.
-OSD CONTRAST.
-TELETEXT CONTRAST.
-OSD CONTRAST.
CONTRAST ADJUSTMENT
DVCO ADJUSTMENT (NTSC)
Adjust not required.
AUTO INSTALLATION OFF/ON
When ON is selected, the TV will perform the
autoinstallation sequence as soon as service mode is
removed.
autoinstallation sequence as soon as service mode is
removed.
a) Connect Test Pattern signal to antenna terminal.
b) Press main switch to OFF.
c) Press volume-down and channel-up buttons and
main switch to ON simultaneously.
d)»Service Software Vxx.xx» appears o screen.
e)Press main switch to OFF.
b) Press main switch to OFF.
c) Press volume-down and channel-up buttons and
main switch to ON simultaneously.
d)»Service Software Vxx.xx» appears o screen.
e)Press main switch to OFF.
PROTECTIONS CANCEL
AGC ADJUSTMENT
a) Tune the TV into CH10 (pattern generator).
b) Adjust the signal strength to 57dB
b) Adjust the signal strength to 57dB
µ
V
c) Press the stand-by button on the Remote Control
(red button).
The TV will perform automatically the AGC.
(red button).
The TV will perform automatically the AGC.
AFT ADJUSTMENT PAL
a) Tune the TV into CH69 (pattern generator).
b) Press the stand-by button on the Remote Control
(red button).
The TV will perform automatically the AFT.
b) Press the stand-by button on the Remote Control
(red button).
The TV will perform automatically the AFT.
1.1 Adjust G2.
1.2 Tune a white card.
1.3 Adjust colour to minimum.
1.4 Position colourimeter in the center of screen.
1.5 Adjust brightness and contrast to obtain a luminance of
≈20 NITS.
1.2 Tune a white card.
1.3 Adjust colour to minimum.
1.4 Position colourimeter in the center of screen.
1.5 Adjust brightness and contrast to obtain a luminance of
≈20 NITS.
1.6 Operate in Service Mode and select location RED CUT
OFF / GREEN CUT OFF / BLUE CUT OFF, to obtain colour
coordinates:
OFF / GREEN CUT OFF / BLUE CUT OFF, to obtain colour
coordinates:
X=0.290 ± 0.015 Y=0.300 ± 0.015
To increase press volume-up button and to decrease press
volume down button.
volume down button.
RED CUT OFF
alter «X» coordinate.
GREEN CUT OFF
alter «Y» coordinate.
BLUE CUT OFF
alter «X» and «Y» coordinate.
2.1 Using brightness and contrast buttons, select a
luminance of
luminance of
≈120 NITS.
2.2 Operate in Service Mode and select location RED GAIN
/ GREEN GAIN / BLUE GAIN, to obtain colour coordinates:
/ GREEN GAIN / BLUE GAIN, to obtain colour coordinates:
X=0.290 ± 0.015 Y=0.300 ± 0.015
To increase press volume-up button and to decrease press
volume down button.
volume down button.
RED CUT OFF
alter «X» coordinate.
GREEN CUT OFF
alter «Y» coordinate.
BLUE CUT OFF
alter «X» and «Y» coordinate.
2.3 Exit Service Mode and check colour coordinates «X»
and «Y» at 20 and 120 NITS. It may be necessary to repeat
procedure 1 and 2 of COLOUR ADJUSTMENT.
and «Y» at 20 and 120 NITS. It may be necessary to repeat
procedure 1 and 2 of COLOUR ADJUSTMENT.
Fig. 10
Press CH
∧ to move in the following sequence:
ALTER NVM PAG
⇒
ALTER NVM POS
⇒
ALTER VNM
VAL to alter presseting adjustments, press up/down-
volume buttons on ALTER NVM VAL.
volume buttons on ALTER NVM VAL.
!
CAUTION: Do not change NVM VALUE to avoid
risk of serious damages to TV set.
7
76GF-64H
ESPA¥A
T1602
C1603
C1602
C1601
(FF)
1
2
3
4
55
4
3
2
1
(F)
E
B
C
Q1601
F7314BMN0
.
FOCO
DYN.INPUT
GND
K7314BM
1
(EW)
R1602
R1603
D1601
R1601
D1602
C1604
+
1
I
H
G
F
E
D
C
B
A
2
3
4
5
6
7
DINAMIC FOCUS UNIT PRINTED WIRING BOARDS.
T1602
C1603
C1602
C1601
(FF)
1
2
3
4
5
5
4
3
2
1
(F)
Q1601
.
FOCO
GND
DYN.INPUT
F7314BMN0
1
(EW)
R1602
R1603
D1601
R1601
D1602
C1604
+
81
1
2
F7229BMN2
6
1
K7229BM
(SR)
W
R
L
L3304
L3308
L3305
L3306
L3307
L3309
(SW)
1
2
R3307
R3306
R3305
R3304
L3309
L3308
6
1
L3304
C3305
C3307
C3310
C3309
L3305
C3308
L3307
L3306
C3306
(SR)
W
R
L
R3308
R3309
R3310
(SW)
F7229BMN2
EXT. SPEAKER UNIT
PWBs (7229N2).
PWBs (7229N2).
8
76GF-64H
MOTHER UNIT PRINTED WIRING BOARD. Component side.
1
I
H
G
F
E
D
C
B
A
2
3
4
5
6
7
Page 9
E
Q912
C
D1804
C1825
C1824
+
C1811
+
C1812
J70
D623
R770
C739
+
J344
R771
R703
R778
R721
D734
D731
J17
IC701
L702
C704
D704
D703
POR701
5
1
(STB2)
C632
+
L605
JF50
JF51
R619
J317
J334
+
C721
J321
D722
FB703
FB704
F701
C701
1
3
(AA)
L611
R614
C637
L612
C638
R536
(H)
5
J326
JF48
FB1002
C1823
+
J327
C713
D720
+
C720
C631
R1
JL2.
D716
C501
+
C723
+
C641
C611
C642
FB501
R503
R643
C509
+
(A)
3
2
1
C526
+
C707
+
K7240BM
F7241BMNF
K7241BM
TP602
TP601
L502
J244
J226
D718
R1820
R1822
R1821
C770
L609A
J207
L609
R501
L603
C714
C711
FB702
D711
J69
20
IC501
R1036
R742
IC706
J67
R723
+
C706
R790
R791
J210
J209
J208
5
4
3
2
1
(F)
E
C
B
Q601
E
Q602
B
L701
Q701
12
6
MODULO_DIGITAL
T601
12
11
10
9
8
7
6
5
4
3
2
1
T701
1
9
10
18
S702
S703
LP701
D1002
D1001
S704
S705
20
21
21
20
G
D
S
S701
4
3
2
1
(CW)
1
D605
D604
C601
D603
FB601
R612
D613
C613
J211
JF10
J178
R716
D712
C705
R714
J5
J6
C
IC1801
15
1
2
14
(K).
IC1008
(L2)
(YC)
DIP
QKIT
JF1
Q605
J171
L606
D621
R623
D606
R641
R609
J172
R624
+
C718
J33
J99
R728
C719
+
R613
C610
J173
C615
T3.15AH
(H).
1
C
Q711
E
IS INDICATED WITH
THE ACTIVE SECTION
CAUTION
THE " " SYMBOL
J68
1
CF701
J4
C
+
R533
J177
J176
J175
J174
R616
D610
J134
J133
J101
+
C616
D702
C703
R715
C710
R741
J10
R792
M1000
D608
JF9
JF8
D609
J306
C634
JF29
J316
R603
R518
L604
R553
C504
(PW)
3
1
J284
JL14.
R408
(AV).
D612
+
C607
R617
R606
D1809
C528
+
C620 +
J264
+
C619
R610
+
C1807
D719
R611A
JL1
J100
J320
R608
R628
(SW1)
(SW2)
(RC)
(OPC)
(ST)
(L4)
R730
R713
FB701
(L5)
4
(MO)
1
J300
J288
D516
R763
JL17
C611A
C618
F602
F601
D714
R727
J85
J86
JF28
FB705
L705
JF53
JF54
.
1
2
(G)
C702
D707
C724
+
D701
D708
C746
L703
JF57
JF56
(EW)
D611
JF55
R604
FB603
C648
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