Sharp 51GT-25 (serv.man7) Service Manual ▷ View online
9
51GT-25H
PAGE
ADDRESS
DESCRIPTION
VALUE
A6
10
A7
02
A8
00
A9
30
AA
04
AB
PAGE MEMORY FOR LIST MODE PROGRAM 1
00
AC
10
AD
02
AE
00
AF
30
B0
04
B1
PAGE MEMORY FOR LIST MODE PROGRAM 2
00
B2
10
B3
02
B4
00
B5
30
B6
04
B7
PAGE MEMORY FOR LIST MODE PROGRAM 3
00
B8
10
B9
02
BA
00
BB
30
BC
04
BD
PAGE MEMORY FOR LIST MODE PROGRAM 4
00
BE
10
BF
02
C0
00
C1
30
C2
04
C3
PAGE MEMORY FOR LIST MODE PROGRAM 5
00
C4
10
C5
02
C6
00
C7
30
C8
04
C9
PAGE MEMORY FOR LIST MODE PROGRAM 6
00
CA
10
CB
02
CC
00
CD
30
CE
04
CF
PAGE MEMORY FOR LIST MODE PROGRAM 7
00
1
D0
∼ FF
RESERVED
FF
{
Page 100
{
Page 200
{
Page 300
{
Page 400
DEFAULT LIST MODE PAGES MEMORIZATION NOTE:
In page memory for LIST MODE, every digit is written in one nibble (4 bits).
The default values for programs 0
The default values for programs 0
∼7 are as follows: 100, 200, 300, 400.
Example: Program 0
NVM Position:
A0
A1
A2
A3
A4
A5
{
0
{
2
{
0
{
0
{
3
{
0
{
0
{
4
{
0
{
0
{
1
{
0
NVM Value:
10
51GT-25H
Fig. 4
c) When
∨
button is pressed, upper picture scanning increases and
lower picture scanning decreases.
d) Adjust the vertical symmetry to obtain symmetrical scanning between
upper and lower picture (Fig.4).
1. HOR SHIFT
a) Receive Philips pattern signal.
b) When
a) Receive Philips pattern signal.
b) When
∧
button is pressed, picture moves to the left.
c) When
∨
button is pressed, picture moves to the right.
d) Adjust the horizontal location to obtain picture centering (Fig.1).
•GEOMETRY ADJUSTMENT PROCEDURE
2. VERT SHIFT
a) Receive Philips pattern signal.
b) When
a) Receive Philips pattern signal.
b) When
∧
button is pressed, picture moves up.
c) When
∨
button is pressed, picture moves down.
d) Adjust the vertical location to obtain picture centering (Fig.2).
3. VERT AM
a) Receive Philips pattern signal.
b) When
a) Receive Philips pattern signal.
b) When
∧
button is pressed, vertical size of picture increases.
c) When
∨
button is pressed, vertical size of picture decreases.
d) Adjust the vertical size to obtain picture overscan (Fig.3).
Fig. 2
Fig. 1
4. VERT SLOP
Fig. 3
a) Receive Philips pattern signal.
b) When
∧
button is pressed, upper picture scanning decreases and
lower picture scanning increases.
•••••PIF/AGC Adjustment
•••••Screen Adjustment
3. Focus Adjustment
Set contrast to 10/10, brightness to 5/10 and
colour 0/10.
colour 0/10.
Apply mains voltage of 220V AC/50HZ to TV.
1.
Receive Philips pattern signal to a level between
60 and 80 dB
60 and 80 dB
µV.
2
.
3
.
Adjust focus potentiometer to obtain
maximum definition.
maximum definition.
4
.
1. AFT Adjustment
AFT must be adjusted to a fixed value of 40.
Receive the «COLOUR BAR» signal (Channel E-
12).
12).
Signal strength: 57 dBµV.
2. RF-AGC Cut-In Adjustment (I2C BUS)
Switch set OFF and ON again, setting is now
memorized.
memorized.
1
.
Enter into Service Mode.
2
.
Push CH
∧
until AGC appears on screen.
3
.
4
.
Push key of R/C.Setting is made
automatically. During this setting the colour bar
shall go from red to yellow. When setting is
finished, colour bar disappears and B-STOP
(bus stop)is shown on screen.
automatically. During this setting the colour bar
shall go from red to yellow. When setting is
finished, colour bar disappears and B-STOP
(bus stop)is shown on screen.
5
.
4. G2 Adjustment
the screen VR of FBT.
5
.
Check BKGD. If it is necessary adjust BKGD
according to instructions detailed in the next
page.
page.
Apply mains voltage of 220V AC/50HZ to TV.
1.
Receive the «MONOSCOPE» pattern signal to a
level between 60 and 80 dB
level between 60 and 80 dB
µV.
2
.
3
.
4
.
Enter into Service Mode. Press the TEXT key of
R/C and set to level.
R/C and set to level.
Set to the point where the raster disappears on
11
51GT-25H
1. Y-DLY
ALTERNATIVE CRT:
See below detailed information in order to adapt from THOMSON ↔ PHILIPS CRT.
See below detailed information in order to adapt from THOMSON ↔ PHILIPS CRT.
THOMSON CRT
PHILIPS CRT
PARTS
REF.
REF.
PARTS CODE
DESCRIPTION
PARTS CODE
DESCRIPTION
CRT
VB51EFS83912E
21” CRT
VB51EAL15511N
21” CRT
R609
VRN-VV3ABR82J
0.82Ω 1W
VRN-VV3AB3R3J
3.3Ω 1W
C606
RC-FZ6394BMNJ
390nF 250V
RC-FZ6474BMNJ
470nF 250V
(F) wire
CSOCN0460BMV4
(F)
NVM data
Data 24
Address 58
Data 22
Address 58
a) Receive Philips pattern signal.
b) When
b) When
∧
button is pressed, luma phase delays.
c) When
∨
button is pressed, chroma phase delays.
d) Adjust the chroma-luma delay.
•COLOUR ADJUSTMENT PROCEDURES
2. «B-GAIN», «G-GAIN», «R-GAIN»
a) Adjust G2.
b) Tune a white pattern
c) Adjust colour to minimum.
d) Position colourmeter in the center of screen.
e) Using brightness and contrast buttons, select a luminance of »120 nits.
f) Operate again in Service Mode and select location R-GAIN and B-GAIN
to obtain colour coordinates:
b) Tune a white pattern
c) Adjust colour to minimum.
d) Position colourmeter in the center of screen.
e) Using brightness and contrast buttons, select a luminance of »120 nits.
f) Operate again in Service Mode and select location R-GAIN and B-GAIN
to obtain colour coordinates:
X = 0.290 ± 0.015
Y = 0.284 ± 0.015
Y = 0.284 ± 0.015
g) Exit Service Mode and check colour coordinates «X» and «Y» at 20 and 120 nits. It may be
necessary to repeat the same procedure or re-adjust the cuts as show the be below one.
necessary to repeat the same procedure or re-adjust the cuts as show the be below one.
NOTE: Locations «R» alter «X» coordinates; «G» alter «Y» coordinates; «B» alter «X» and «Y»
coordinates.
coordinates.
12
51GT-25H
F 7320NOB PRINTED WIRING BOARD. Components side.
0
22
23
24
25
17
18
19
20
21
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
10
11
12
13
1
2
3
4
5
6
7
8
9
Y
X
T3.15AH
C618
C618
R751
J162
+
C514
+
C604
+
+
C622
R611
R618
R609
R634
L604
D604
4
P602
1
+
C608
C753
J815
J816
L703
J161
L702
P702
2
1
PR701
D1021
P701
3
2
1
E
D501
D610
D2.
QKITP7320BMN
F7321BM
F7320BMN0
K7321BM
D719
TP701
J801
R616
B
T3.15AL
-
RDA1
RDA4
TP602
TP601
(H)
(F)
K7320BM
R703
H1
D7081
+
C712
D708
D709
J
R501
I1
F1
R625
J416
C603
J129
J128
J127
J126
C711
+
J336
L790
C727
+
+
C713
C501
+
E
Q5091
B
+
C502
C505
+
RMC1
C874
B
Q5061
E
B
Q504
E
Q505
C
E
Q510
C
B
Q5031
E
B
Q502
E
B
Q604
E
E
Q603
C
C
+
C1004
D609
D716
+
C236
C625
C620
D211
D620
F701
J429
R722
J334
C725
E
Q602
B
E
Q705
C
E
Q703
C
E
Q702
C
J338
J800
J812
R632
R620
J210
D605
C602
C723
D717
D707
D706
D619
R720
J405
J425
+
C714
R705
R602
R708
R702
R706
C755
L201
D751
D710
C726
D705
C705
D712
D718
D704
D703
D702
D701
L701
C702
R604
R605
C707
R719
R710
R709
R753
R752
C605
C709
C704
C703
C728
S701
S1001
S1002
S1003
S1004
8
9
16
T700
5
41
2
3
P601
C601
VA701
T751
D1011
K
L602
J330
J328
J341
C606
L710
L601
J144
J137
R518
R610
C615
C617
R504
R506
D513
D514
D505
D506
R514
R606
J142
R507
D507
D504
J
P883
1
2
3
4
5
6
7
11
8
9
10
11
T601
12
11
10
9
8
9
7
6
5
6
5
4
3
SC881
Q601
B
C
E
B3.
B4.
C718
(A)
(G)
G
D
S
Q701
FH1001
FH1002
J335
FB601/212
E
Q5
J301
D755
+
C719
+
C724
+
D720
R603
R732
C722
R721
C710
D724
+
C706
R704
R707
C708
J434
J345
J435
J910
J909
B
R502
Page 13
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