Schematic Diagram - Panel Section - Sony HCD-GT22 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-27. SCHEMATIC DIAGRAM – PANEL Section –
1 2 3
PANEL BOARD
A
B
C
CN601
27P
VF 27
D
VF 26
-VFL 25
D-GND 24
VREF 23
VDD+3.3V 22
R755 3.3k
KEY0 21
R756
3.3k
KEY1 20
R757 3.3k
KEY2 19
R758 3.3k
KEY3
E
KEY3 18
JOG
JOG 17
VOL
VOL 16
CS
VFD-CS 15
RESET
H
VFD-RESET 14
ST1
STREAM1 13
ST2
MAIN
STREAM2 12
BOARD ST3
STREAM3 11
F (1/4)
ST4
CN901 STREAM4 10
T E
L 1 3 9 4 2 2 9 6 5 1 3 ST5
(Page STREAM5 9
ST6
STREAM6 8
38)
SW-LED
SW-LED 7
STBY
STBY-LED 6
SIRCS
SIRCS 5
DATA
VFD-DATA 4
CLK
VFD-CLK 3
G
LED+9V 2
LED-GND 1
1 STBY-LED STBY
D-GND
H
S
KEY0
SIRCS SIRCS
KEY LEFT AVREF
BOARD
LED+9V
(Page 53)
7 SW-LED-OUT
I
J
K
w w w
L
HCD-GT22/GT44/GT55
• See page 36 for Waveforms. • See page 58 for IC Block Diagrams.
4 5 6 7
1 2 5 6 7 8 9 10 11 12 13
C732
C731
2.2
2.2
50V
50V
R715 22
R716 22
C709
R601
S601 C708 C707 C706
22
330
0.1
0.1 47
50V
DISPLAY 10V
CLK
DATA
R612 R613 R614 R615
R611
470 680 1k 1.5k
330
CS
RESET
(GT22/GT44)
ILLUMINATION ERASE PRESET GROOVE SURROUND
EG
R624
R621 R622 R623 R625 R626
1k
330 470 680 1.5k 2.2k
ENTER RETURN
+ TUNING+ TUNING- -
(GT44/GT55)
7.6 7.6
0.1 0.1 0.1 0.1 7.6
0 0
0.7 0.7 0.7 0.7 0
R681 R682 R683 R685 R686
R687 R684
10k
10k 10k 10k 10k 10k 10k
x a o
y
. i
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8 9 10 11
FL701
FLUORESCENT INDICATOR TUBE
14 15 16 17 18 19 20 21 22 23 24 37 38 39 40 41 42 43 44
39 38 37 36 35 34 33 32 31 30 29 28
-26
40 VFDP
41
41 NC
3.3
42 VDD
43 NC IC701
44 VSS
1.7 FLUORESCENT
45 XT INDICATOR TUBE DRIVER
1.7
C705
46 XTb IC701
100p
R701 R705 NJU3427FA2
47 NC
100 4.7k
3
Q Q
48 SCK
C701
R702 100 1000p 2.7 3 7 6
49 SI
C702
1000p
R703
50 NC
100
2.6
51 CSb
C703 1000p 3.2
52 RSTb
R704
C704
100
1000p
EQ BAND 1 2 3 4 5 6 7 8 9 10 11 12 13
PLAY MODE/
TUNING MODE
(GT55)
R725 R726 R727
R721 R722 R723 R724
47k
47k 47k 47k
47k 47k 47k
D601-604
(STREME)
∗
D601-606
1L434FV22DOTDF01(GT22/GT44)
1L434B22COCDT2(GT55)
Q601-607
LED DRIVE
R741
47k
u 1 6 3
.
51 51
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2 4
8 9 9
12 13 14 15
45 46 47 48 49 50 53 54
IC B/D
27
-23.7 P13
DR23
26
(S12)
-20 P14
DR22
25
(S13)
-23.7 P15
DR21(S14) 24
-25.5 P16
DR20(S15) 23
-16.3 P17
DR19(S16) 22
-21.8 P18
DR18(S17) 21
-23.7 P19
DR17(S18) 20
-25.5 P20
DR16(S19) 19
DR15(T15) 18 3.3
3 1 5 1 R734 5 0 8 9 2
DR14(T14) 17 47k
-24 -23.8
DR13(T13) 16
-24
15
DR12(T12)
NC 14 -24.3
R733 3.3
47k
-23.8
-24.3
Q713
2SC3052EF-T1-LEF
R732
R728 R729 R753
R730 R731
47k 47k 47k
47k 47k 47k
Q701-714
GRID DRIVE
R754
47k
CN605
3P
1 D-GND
KEY3
2 KEY3
m
3 KEY
VOL
VOL 1
c o
JOG
JOG
D-GND
AVREF 4
HCD-GT22/GT44/GT55
2
8 9 9
16 17 18 19
4 9 8 2 9 9
S651
VOLUME BOARD
ROTARY ENCODER
MASTER
VOLUME
R768
47k
2
1
3
R767
100k
R761 R762 C651 C652
1 VOL
22k
22k 0.01 0.01
JOG
D-GND
AVREF
4
C653 C654
R763 R764
0.01
0.01
22k 22k
2
1
R766
47k
3
R765
100k
S652
ROTARY ENCODER
OPERATION
DIAL
R
KEY RIGHT
BOARD
CN615
(Page 53)