Sony GDM-20E03T5 Service Manual ▷ View online
CHASSIS
SERVICE MANUAL
MICROFILM
SPECIFICATIONS
N2H
GDM-20E03T5
AEP Model
Chassis No. SCC-J53G-A
COLOR GRAPHIC DISPLAY
– 2 –
GDM-20E03T5
PRIMARY MODE
PRIMARY
MODE AT PRODUCTION
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
MODE 6
MODE 7
MODE 8
MODE 9
MODE 10
RESOLUTION
640 X 480
640 X 480
800 X 600
832 X 624
1024 X 768
1152 X 900
1152 X 870
1152 X 900
1280 X 1024
1600 X 1200
CLOCK
25.175 MHz
31.500 MHz
49.500 MHz
57.285 MHz
78.750 MHz
94.500 MHz
100.000 MHz 108.000 MHz 135.000 MHz 202.500 MHz
— HORIZONTAL —
H-FREQ
31.469 kHz
37.500 kHz
46.875 kHz
49.727 kHz
60.023 kHz
61.846 kHz
68.681 kHz
71.809 kHz
79.976 kHz
93.750 kHz
usec
usec
usec
usec
usec
usec
usec
usec
usec
usec
H. TOTAL
31.778
26.667
21.333
20.110
16.660
16.169
14.560
13.926
12.504
10.667
H. BLK
6.356
6.349
5.172
5.586
3.657
3.979
3.040
3.259
3.022
2.765
H. FP
0.636
0.508
0.323
0.559
0.203
0.423
0.320
0.296
0.119
0.316
H. SYNC
3.813
2.032
1.616
1.117
1.219
1.354
1.280
1.185
1.067
0.948
H. BP
1.907
3.810
3.232
3.910
2.235
2.201
1.440
1.778
1.837
1.501
H. ACTIV
25.422
20.317
16.162
14.524
13.003
12.190
11.520
10.667
9.481
7.901
— VERTICAL —
V. FREQ(Hz)
59.940 Hz
75.000 Hz
75.000 Hz
74.553 Hz
75.029 Hz
66.004 Hz
75.062 Hz
76.149 Hz
75.025 Hz
75.000 Hz
lines
lines
lines
lines
lines
lines
lines
lines
lines
lines
V. TOTAL
525
500
625
667
800
937
915
943
1066
1250
V. BLK
45
20
25
43
32
37
45
43
42
50
V. FP
10
1
1
3
1
2
3
2
1
1
V. SYNC
2
3
3
3
3
4
3
8
3
3
V. BP
33
16
21
37
28
31
39
33
38
46
V. ACTIV
480
480
600
624
768
900
870
900
1024
1200
— SYNC —
INT(G)
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
EXT(H/V)/POLARITY
YES N/N
YES N/N
YES P/P
YES N/N
YES P/P
NO
YES N/N
NO
YES P/P
YES P/P
EXT(CS)/POLARITY
NO
NO
NO
NO
NO
YES N
NO
YES N
NO
NO
INT/NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
96.12.9 VER.
TIMING SPECIFICATION
POWER SAVING FUNCTION
This monitor is capable of three states of reduced power consumption. By sensing the absence of video signals and one or both sync signals
coming from the host computer, it will reduce power consumption as follows.
coming from the host computer, it will reduce power consumption as follows.
Recovery time
–
Approx. 3 sec.
Approx. 3 sec.
Approx. 10 sec.
–
Power consumption
≤
140 W
≤
100 W
≤
15 W
≤
5 W
0 W
Power consumption
state
state
1 Normal operation
2 Standby (1st state)
3 Suspend (2nd state)
4 Active-off (3rd state)
5 Power-off
u
power indicator
Green on
Green on
Green on
Off
Off
@
power saving indicator
Off
Orange on
Orange on
Orange on
Off
Failure
HV, +B failure
Horizontal/Vertical deflection failure, thermal
protector
protector
ABL protector
Aging/Self Test
Power Saving LED
Off
Blink Amber
Blink Amber
Off
Power LED
Blink Amber
Off
Blink Amber
Amber (0.5 sec)
→
Off (0.5 sec)
→
Green (0.5 sec)
→
Off (0.5 sec)
→
DIAGNOSIS
Aging Mode: Video aging
During Power Save, press “OPTION” Key for longer than 2 seconds.
Self Test: OSD color-bar indication
During Power Save, press “CONTRAST+ (l)” Key for longer than 2 seconds.
– 3 –
GDM-20E03T5
Section
Title
Page
1. GENERAL
...................................................................
4
2. DISASSEMBLY
2-1.
Cabinet Removal .................................................. 10
2-2.
D and M Boards Removal ................................... 10
2-3.
G Board Removal ................................................. 11
2-4.
A Board Removal ................................................. 11
2-5.
I/O Terminal Board Assy Removal ...................... 11
2-6.
Service Position .................................................... 12
2-7.
H, J Boards Removal ............................................ 12
2-8.
Picture Tube Removal ......................................... 13
3. SAFETY RELATED ADJUSTMENT
............. 14
4. ADJUSTMENTS
...................................................... 15
5. DIAGRAMS
5-1.
Block Diagram ..................................................... 17
Section
Title
Page
5-2.
Frame Schematic Diagram ................................... 20
5-3.
Circuit Boards Location ....................................... 22
5-4.
Schematic Diagrams and Printed Wiring Boards ..... 22
(1) Schematic Diagram of D Board ........................... 23
(2) Schematic Diagram of A Board ........................... 28
(3) Schematic Diagram of G Board ........................... 33
(4) Schematic Diagrams of DA, H, J and
M Boards .......................................................... 37
(5) Schematic Diagram of L Board ........................... 41
5-5.
Semiconductors .................................................... 43
6. EXPLODED VIEWS
6-1.
Chassis ................................................................. 45
6-2
Picture Tube ........................................................ 46
6-3.
Packing Materials ................................................ 47
7. ELECTRICAL PARTS LIST
............................ 48
TABLE OF CONTENTS
WARNING!!
NEVER TURN ON THE POWER IN A CONDITION IN
WHICH THE DEGAUSS COIL HAS BEEN REMOVED.
WHICH THE DEGAUSS COIL HAS BEEN REMOVED.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
¡
ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN
THE PARTS LIST ARE CRITICAL FOR SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL FOR SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER
CRITICAL COMPONENTS ARE REPLACED OR IMPROPER
OPERATION IS SUSPECTED.
THE PARTS LIST ARE CRITICAL FOR SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL FOR SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER
CRITICAL COMPONENTS ARE REPLACED OR IMPROPER
OPERATION IS SUSPECTED.
– 4 –
SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts
from the Operating Instruction Manual. The page numbers of
the Operating Instruction Manual remein as in the manual.
from the Operating Instruction Manual. The page numbers of
the Operating Instruction Manual remein as in the manual.