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HCD-GNX780/GNX880
38
38
HCD-GNX780/GNX880
7-12. SCHEMATIC DIAGRAM – MAIN BOARD (2/3) –
VREF
SYSTEM CONTROL
CN402
NO402
R431
R432
R433
R434
R436
R438
R439
R440
R441
R442
R443
R444
R445
R446
R448
R449
R450
R483
R484
R486
R485
R487
R489
R488
R490
R595
C499
R587
R586
R585
R430
R529
R530
R429
R428
R427
R426
R425
R424
R423
R422
R421
R420
R419
R418
R417
R407
R406
R405
R404
R403
R402
R401
R411
R413
C411
C419
C410
R505
R409
C412
R412
X401
C464
C462
C405
R468
R470
R472
R473
R474
R475
R476
R477
R478
R570
R571
R573
R574
R452
C560
C561
CN508
NO503
IC401
NO401
R503
C503
C502
C501
R502
R400
R463
D505
D501
D502
D503
D504
D402
D401
R592
R493
4.7k
1k
R593
R492
JR131
X402
R497
R501
CN511
Q583
Q505
Q504
Q501
R500
C498
C497
R538
IC402
R469
C416
D560
10P
4P
100
100
100
100
R435 100
100
R437 100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
1M
0.1
10k
10k
10k
100
10k
10k
100
100
100
100
100
100
100
100
100
1k
100
220
10k
100
100
100
100
100
100
100
330k
0
22p
220p
22p
4.7k
10k
0.1
100k
32.768kHz
0.01
100
10V
0.1
100
100
100
100
100
100
100
100
100
10k
10k
10k
10k
100
0.01
0.01
17P
6P
M30622MEP-A75FPU0
3P
0
0.1
0.1
10
50V
1k
100
10k
1SS355WTE-17
1SS355WTE-17
1SS355WTE-17
1SS355WTE-17
1SS355WTE-17
1SS355WTE-17
1SS355WTE-17
4.7k
0
5MHz
1k
220
13P
DTA124EKA
BUFFER
DTC124EKA
B+ SWITCH
DTA114EKA
B+ SWITCH
DTC124EKA
RESET
SWITCH
10k
10
50V
0.1
10k
BD4929G-TR
100
2200
6.3V
D3SBA20-4101
BUS8
BUS7
BUS6
BUS5
BUS4
BUS3
SPEANA
D GND
LED+9V
EVER+3.3V
B+
CD POWER
HP-DET
EVER+3.3V
GND
GND
D GND
UNREG
89
90
38
39
40
41
42
43
44
45
46
31
32
33
1
2
3
5
7
18
19
21
22
23
24
25
26
27
28
34
31
32
33
84
85
86
87
73
74
4
48
71
72
67
66
88
36
35
49
50
34
52
29
30
37
37
71
29
30
4
73
74
72
29
30
12
9
32
33
34
31
81
82
79
80
83
95
12
9
30
29
72
94
38
39
40
41
42
43
44
45
46
53
54
55
56
57
58
59
78
77
76
75
70
68
60
97
R492
680
3.3k
(FOR CHECK)
(FOR CHECK)
LEVEL DETECT
*
*
C417 0.1
NO403
D404
1SS355WTE-17
D403
1SS355WTE-17
C401
0.1
(1/3)
MAIN BOARD
(Page 37)
(3/3)
MAIN BOARD
(Page 39)
BOARD
TRANS
(Page 53)
CN1213
BOARD
PANEL
(Page 41)
CN902
BOARD
PRIMARY
(Page 53)
CN1200
BOARD
DRIVER
(Page 35)
CN701
GNX880
GNX780
• See page 54 for Waveforms.
• See page 61 for IC Pin Function Description.
Ver. 1.1