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HCD-GT22/GT44/GT55
51
51
HCD-GT22/GT44/GT55
7-27. SCHEMATIC DIAGRAM – PANEL Section –
•
See page 36 for Waveforms.
•
See page 58 for IC Block Diagrams.
3.3
3.3
-24
-24
-25.5
-23.7
-20
-23.7
-25.5
-16.3
-21.8
-23.7
-23.8
-23.8
-26
3.3
1.7
1.7
3
2.7
2.6
3.2
-24
-24
-24
-24
-24
-24
-24
-24
-24
-24
-24
-24
-23.7
-16.4
-21.8
-25.5
-23.7
-18.2
-16.4
-20
-20
-16.4
-18.2
-25.5
0
7.6
0
7.6
0.7
0.1
0.1
0.7
0.1
0.7
0.1
0.7
7.6
0
-24.3
3.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
3.3
-24.3
-23.9
-24.3
-24.3
1
2
3
4
5
6
7
8
9
10 11 12 13
15
16
17
18
19
20
21
22
23
24
25
26
29
30
31
32
33
34
35
36
37
38
39
43
44
45
46
47
48
49
50
51
52
14
28
41
42
40
27
∗
∗
∗
∗
∗
∗
2SC3052EF-T1-LEF
Q601
2SC3052EF-T1-LEF
Q602
2SC3052EF-T1-LEF
Q603
2SC3052EF-T1-LEF
Q604
2SC3052EF-T1-LEF
Q605
2SC3052EF-T1-LEF
Q606
4.7k
R705
100
R704
100
R703
100
R702
100
R701
1000p
C704
1000p
C703
1000p
C702
C701
1000p
100p
C705
10V
47
C707
0.1
C706
50V
2.2
C731
50V
2.2
C732
47k
R711
47k
R712
1.5k
R713
1.5k
R714
10k
R681
10k
R682
10k
R683
10k
R684
10k
R685
10k
R686
1k
R661
1k
R671
1k
R662
1k
R672
1k
R663
1k
R673
1k
R664
1k
R674
1k
R665
1k
R675
1k
R666
1k
R676
S611
S612
S613
S614
S615
S616
330
R611
470
R612
680
R613
1k
R614
1.5k
R615
S601
330
R601
2SC3052EF-T1-LEF
Q607
10k
R687
22
R715
22
R716
50V
22
C709
2SC3052EF-T1-LEF
Q701
47k
R721
47k
R722
47k
R723
47k
R724
47k
R725
47k
R726
47k
R727
47k
R728
47k
R729
47k
R730
47k
R731
47k
R732
2SC3052EF-T1-LEF
Q702
2SC3052EF-T1-LEF
Q703
2SC3052EF-T1-LEF
Q704
2SC3052EF-T1-LEF
Q705
2SC3052EF-T1-LEF
Q706
2SC3052EF-T1-LEF
Q707
2SC3052EF-T1-LEF
Q708
2SC3052EF-T1-LEF
Q709
2SC3052EF-T1-LEF
Q710
2SC3052EF-T1-LEF
Q711
2SC3052EF-T1-LEF
Q712
47k
R734
47k
R733
2SC3052EF-T1-LEF
Q713
2SC3052EF-T1-LEF
Q714
47k
R741
47k
R742
47k
R743
47k
R744
47k
R745
47k
R746
47k
R747
47k
R748
47k
R749
47k
R750
47k
R751
47k
R752
47k
R753
47k
R754
S626
S625
S622
S621
S623
S624
S627
2.2k
R626
1
7
8
9
10 11 12
5
6
14
19
18
17
13
16
20
15
23 24
21 22
42
44
43
40
37
39
38
41
46
48
47
45
53
49 50
54
2
FL701
1k
R624
680
R623
470
R622
330
R621
1.5k
R625
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
27P
CN601
LED-GND
LED+9V
VFD-CLK
VFD-DATA
SIRCS
STBY-LED
SW-LED
STREAM6
STREAM5
STREAM4
STREAM3
STREAM2
STREAM1
VFD-RESET
VFD-CS
VOL
JOG
KEY3
KEY2
KEY1
KEY0
VDD+3.3V
VREF
D-GND
-VFL
VF
VF
3.3k
R755
3.3k
R756
3.3k
R757
3.3k
R758
0.1
C708
1
2
3
CN605
D-GND
KEY3
KEY
P20
P19
P18
P17
P16
P15
P14
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P11
P12
P14
P17
P18
P19
P20
ST1
CLK
DATA
CS
RESET
STBY
SIRCS
JOG
VOL
RESET
ST1
ST2
ST3
ST4
ST5
ST6
SW-LED
STBY
SIRCS
CLK
1G
2G
3G
4G
5G
6G
7G
8G
9G
10G
11G
12G
P13
SW-LED-OUT
P16
P15
P13
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
8G
9G
10G
11G
12G
13G
DATA
CS
KEY3
14G
ST4
ST2
ST3
SW-LED
ST6
VOL
13G
ST5
KEY0
LED+9V
1G
2G
3G
4G
5G
6G
7G
14G
D-GND
D-GND
AVREF
AVREF
KEY3
PANEL BOARD
A
10
1
2
J
H
B
13
11
L
C
7
8
I
14
F
9
6
K
4
15
16
3
G
D
5
E
12
STBY-LED
SIRCS
Q701-714
GRID DRIVE
(STREME)
D601-604
1L434FV22DOTDF01(GT22/GT44)
∗
D601-606
1L434B22COCDT2(GT55)
LED DRIVE
Q601-607
ILLUMINATION
ERASE
PRESET
EG
GROOVE
SURROUND
EQ BAND
DISPLAY
ENTER
RETURN
JOG
VOL
1
4
(GT44/GT55)
1
7
-
+
TUNING-
FLUORESCENT INDICATOR TUBE
D601
D602
D603
D604
D605
D606
PLAY MODE/
TUNING MODE
(GT22/GT44)
(GT55)
18
17
0.01
C651
0.01
C652
0.01
C653
0.01
C654
22k
R761
22k
R762
47k
R766
47k
R768
100k
R765
22k
R764
22k
R763
100k
R767
S652
1
2
3
S651
1
2
3
VOLUME BOARD
OPERATION
DIAL
VOLUME
MASTER
ROTARY ENCODER
1
4
VOL
JOG
D-GND
AVREF
ROTARY ENCODER
3P
19
JOG