Yamaha GX-700 Service Manual page 38

A B
GX-700/GX-700VCD
BLOCK DIAGRAM
1
15
LD/TV
2
11
VCR IN
4
12
VCR REC
1
AUX 12
IN
1
AUX TUNER 14
5
REC
TAPE 15
2
CD 11
4
2
2
10
4
9
TUNER
TAPE PB
CD
TAPE REC
3
(VCD only)
MIC1
JK801 31
32
4 MIC MIXING
D.ECHO
9
IC801
36
35
7,12 40,41,42
8
CLOCK
KLATCH
MIC2
MIC VOLUME
VR801
4
JK802
CD CONTROL
TUNER
CONTROL
VCD
4 1
VIDEO SW
VCR PB 8 IC1
5
2
3
LD/TV 6
MONITOR
Q1,2
VCR REC
38
6
C
INPUT
13
SWITCH
3
IC3
9,10 Q31,32
IN2A
IN2B
IC8 64,65
INPUT
13 3 1
SWITCH
3 5 7
IC3
9,10 Q29,30
1
REC
11 INIA
SWITCH
3 INIB
IC5
8 IC8 62,63
5,6 12,13
Q5,7
RECB
IC8 67
Q6,15
RECA
IC8 66
D.Prologic
45
IC5
46
36,37,38
(notVCD)
IC403
4 2
6 8
IC802
4 2
6 8
DATA
8MHz 32.768MHz
XL402 XL401
38 39 36 37 62 63 66
16
17
46
8
10
SPEANA
27
|
IC26
28
13
MIC SW
86
20
|
22
25
26
18
19
30
34
68,69 70 32 3
VSEL0,1
/VCR
D,SEL
SW2
(R,T)
ON/OFF
U801
REMOCON
Q3
D E
HP AMP
IC10
49 21 MUTE 5
64 28 Q23.24 3
VOLUME LEVEL
CONTROL
GEQ
IC7
14 15
36 34
IC8 49,17,16
24 25 26
TUCE,TUDO,TUCLK
22 4 2
YMERSION
11 18 6 8
TONE.CONT.
12
IC814
13 IC7 IC8
23 24 19 20
4 2 6 8
CONT
IC8 61
BASS TREBLE
VR804 VR802 IC7 IC9
6 8 6 8
1 15
4
3
24 2 ON/OFF
23 5 IC2
22 13
9 12 14
9,10,11
+12M
12V
-12V
-27V
9.0V
K9V
DECK CONTROL
U5.6V
5.0V
THER
67 71 - 80,87 - 89,92 - 97 16,17,45 52,60 61 16,17,49 15 11
SMUTE
59
AMP
MUTE
24
IPRT
90
SPON
58
SYSTEM CPU
PRON
57
IC8
HPIN
85
ACIN
29
48
13
49
|
12
16
13
50 51 81,82 4 - 8
KEY CONT
VOL. SW801-807,812-818
820-824,826-836
ROTARY
SW812
ENCODE
VCDonly
SW825
39
F
IC11
MUTE
3 1
Q21
SMUTE
IC8 59
MUTE
Q801
802
POWER AMP
IC201
7 MUTE
18 14
1 Q201
22 15
202
24 26
203
17
– HB
– LB
AMPMUTE IC8 11
IC8 24 THER
POWER AMP
IC10
IC11
IC8
25 26 4 2 1 4
VOLUME
CONTROL
IC9
6 5 4 2
IC8 90
PROTECTION
IPRT
RY1
IC8 58
SPON RY201
u5.6V
IC8 57
PRON
Q33
K9V
K9V
D211
+HB
Q26 Q206
5.0V -27V
5.0V -27V
-HB
Q25 Q204
9.0V 9.0V 12V
+LB D212
12V
Q218
+12M +12M
-LB
Q207
-12V -12V
IC8 15
VPRT
1
1
FAC1
|
FL 2
FL DISPLAY
12
DRIVER
14 FAC2
V801 58
IC815
|
59
64
32
D213
CDB
VP
-27V
G H
SW
OUT
5.0V
HP,IC8 85
HP JACK
JK803
RY201 TE201
+
-
FRONT
SPEAKER
+
-
TE1
+
REAR-L
-
+
CENTER
-
+
REAR-R
-
IC8 29
ACIN
T203
D215
SUBB
u5.6V
RY203
T202
F217
RY203
F201