Yamaha GX-700 Service Manual page 37

A B
BLOCK DIAGRAM
1
CD
TRAVERSE UNIT
A
35
B
36
C
HEAD
D
AMP
IC1
+5
AN8806SB
E
33
F
34
2 1
LASER
Q1
2
LD LD
DRIVE
GND
MON
-5
FCS 20
21
TRK
25
26
3
ACT
MOTOR
5 DRIVE
M
SPINDLE
6
10
M FEED
11
LIMIT SW
4
PAL
AUTO
IC11 2
SW1
NTSC
5
(VCD only)
6
C
IC10
TP1
15
73
MUTE
75 Q9,10
10 44
1
64
3 27 |
78
13 29 3
SERVO SIGNAL
|
| 30 30 55
PROCESSOR
80
17 | 56
DF.DAC
19 41 62
IC5
|
25
58 8
16
9
|
59 11
XL1 18
12
16.9344MHz
21,22,24-28 7,10,14,15
62,67,68 32-34
XL2 8,11,13,23, 15,27,29, 64
8MHz
38
39
30
BUSS
|
BUFFER
41
IC7
CD CPU
IC11
69
70
3 26
4
57,58 59,60 1,3-7 65
12
13
19
27
|
29
+6
+5
1,9 1,9
MOTOR MOTOR
DRIVE DRIVE
IC3 IC4
3 7 3 7
M M
LOADING ROTARY UNLOAD LOAD ADDRESS STOP UP/DOWN
CD MECHA
D E
D.OUT CB7
CASSETTE MECHA
CD
R/P HEAD
VCD
VIDEO
VCD E HEAD
MODULE
16 (VCD only)
IC8
17
18
BUSS
IC13
BUFFER
71
IC13
54
19 LOAD
M
|
CD CONTROL
22
35
Q5,15 Q8 LOAD OUT
+6 CDB LOAD IN
ON/OFF
R,REC
+5
F,REC
CASS
CrO
2
SOL
SENSOR
OUT
+5V
PLAY
SPEEDB
M
SPEEDA
36
F
DECK
+ 41
44
-
DOLBY
48 R/P AMP
9,1 7,3 37
IC6
PB LEVEL
R/P
VR1,4
SWITCH
IC2
9
26
IC8 73 REC
E+
18,19 4 10 17
E-
Q16
BIAS
Q8 Q10 Q9
TRAP
L2,3
BIAS
VR2,3
BIAS
BIAS
POWER
OSC.
Q13,14,17,
L1,Q12
18,34
2 5 IC8 80 OPEN
MOTOR
DRIVE
10 6 IC8 79 CLOSE
IC1
IC 95 OPSW
5.0V
IC8 92 CLSW
IC8 94 RECINHR
IC8 93 RECINHF
IC8 87 CASS
IC8 89 CrO
2
SOL
DRIVE IC8 77 SOL
Q3,4
IC8 96 REEL
Q1
5.0V
IC8 88 PLSW
MTR
MOTOR
MTR
DRIVE IC8 78 CPM
Q2,11
TAPE SPEED
VR7
G H
GX-700/GX-700VCD
32
TAPE REC
5
REC LEVEL
13
24 Q35,36
14
IC8 76 TPEQ
VR5,6
23
11
TAPE PB
26
29 IC8 72 RMUTE
3 IC8 97 MUSIC
27
IC8 73 REC
IC8 76 TPEQ
IC8 75 DOLBY
IC8 71 PBMUTE
+B
IC8 74 BIAS
IC8 76 TPEQ
37