COLOR MONITOR
SyncMaster 320TFT/520TFT
Manual
SERVICE
COLOR MONITOR CONTENTS
**
1. Precautions
2. Reference Information
3. Product Specifications
4. Operating Instructions
5. Disassembly & Reassembly
6. Troubleshooting
7. Exploded View & Parts List
8. Block Diagram
9. Electrical Parts List
10. PCB Diagrams
11. Wiring Diagram
12. Schematic Diagrams
20
1
18
19
7
9
8
Power Line
Signal Line
12-1 SyncMaster 320TFT/520TFT
12 Schematic Diagrams
12-1 DAC & IO Part Schematic Diagram
12 Schematic Diagrams
SyncMaster 320TFT/520TFT 12-2
1
2
3
4
5
12
3.3
GND
3.3
GND
pin #
MODES
1024 x 768 / 85 Hz
Table 12-4. IC108
Unit: Vrms
1
2
3
4
5
12
5
GND
5
GND
pin #
MODES
1024 x 768 / 85 Hz
Table 12-3. IC107
Unit: Vrms
1
2
3
12
GND
5
pin #
MODES
1024 x 768 / 85 Hz
Table 12-1. IC102
Unit: Vrms
1
2
3
12
GND
5
pin #
MODES
1024 x 768 / 85 Hz
Table 12-5. IC109
Unit: Vrms
1
2
3
12
GND
5
pin #
MODES
1024 x 768 / 85 Hz
Table 12-2. IC103
Unit: Vrms
7
IC101 #94
CH1 RMS = 3.5 V
8
IC105 #10
CH1 RMS = 3.1 V
9
IC104, #1
CH1 RMS = 4.56 V
18
IC110 #13
CH1 RMS = 1.24 V
19
IC110 #14
CH1 RMS = 400 mV
20
IC110 #2
CH1 RMS = 4.4 V
1
IC110 #3
CH1 RMS = 3.6 V
16
15
17
10
11
12 13 14
2
3
4
5
6
Power Line
Signal Line
12-2 ZOOM & FRC Part Schematic Diagram
12 Schematic Diagrams
12-3 SyncMaster 320TFT/520TFT
12 Schematic Diagrams
SyncMaster 320TFT/520TFT 12-4
1
2
3
4
5
6
7
8
11.96
5.90
4.99
5.8 mV
4.99
4.99
11.95
11.95
pin #
MODES
1024 x 768 / 85 Hz
Table 12-6. IC309
Unit: Vrms
2
IC310 #22
CH1 RMS = 3.1 V
3
IC310 #23
CH1 RMS = 2.3 V
4
IC310 #25
CH1 RMS = 2.8 V
5
IC310 #26
CH1 RMS = 2.12 V
6
CN301 #5~20
CH1 RMS = 1.18 V
10
IC301 #2
CH1 RMS = 2.3 V
11
IC301 #3
CH1 RMS = 3.25 V
12
IC301 #54
CH1 RMS = 2.35 V
13
IC301, #55
CH1 RMS = 200 mV
14
IC301 #56
CH1 RMS = 50 mV
15
IC307 #12
CH1 RMS = 2.2 V
16
IC307 #5
CH1 RMS = 1.7 V
17
IC307 #10
CH1 RMS = 4.3 V
Power Line
12-3 Micom Part Schematic Diagram
12 Schematic Diagrams
12-5 SyncMaster 320TFT/520TFT
1
2
3
4
5
6
7
8
NC
NC
NC
GND
4.43
4.46
4.87
5.03
pin #
MODES
1024 x 768 / 85 Hz
Table 12-8. IC403
Unit: Vrms
1
2
3
4
5
6
7
8
GND
GND
GND
GND
5.03
5.03
GND
5.03
pin #
MODES
1024 x 768 / 85 Hz
Table 12-9. IC404
Unit: Vrms
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
59.8 mV
5
5
5
4.62
0.457
4.91
5
GND
5.03
5.02
5.02
NC
NC
4.94
93.7 mV
3.217
4.97
5.01
63.0 mV
0.476
3.44
GND
4.16
5.01
4.97
4.46
4.43
4.78
4.77
14.07
2.226
2.238
5.03
5.03
4.96
4.96
52.7 mV
4.96
4.87
GND
9.7 mV
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
pin #
pin #
MODES
1024 x 768 / 85 Hz 1024 x 768 / 85 Hz
MODES
Table 12-7. IC401
Unit: Vrms
12-4 Sub Part Schematic Diagram
12 Schematic Diagrams
SyncMaster 320TFT/520TFT 12-6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
GND
GND
Signal (+2.5 V Bias)
5
Signal (+2.5 V Bias)
Input Signal (+2.5 V Bias)
GND
2.5
2.5
2.5
Input Signal (+2.5 V Bias)
Signal (+2.5 V Bias)
5
Signal (+2.5 V Bias)
GND
2.5 V (Headphone : 5 V)
pin #
MODES
1024 x 768 / 85 Hz
Table 12-10. IC803
Unit: Vrms
Memo
12 Schematic Diagrams
12-7 SyncMaster 320TFT/520TFT
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