Block Diagram - Yamaha GX-505 Service Manual

A B

BLOCK DIAGRAM

1
CD
TRAVERSE UNIT
A
35
B
36
C
HEAD
D
AMP
IC4
+5
AN8806SB
E
33
F
34
2
2 1 5
LASER
Q2
LD
LD
DRIVE
+D5
GND
PD
VR
FCS 6
7
TRK
12
3
13
ACT
MOTOR
DRIVE
24
M
SPINDLE
IC1
25
M56748FP
30
M FEED
31
4
LIMIT SW
PAL
AUTO
5
IC8 2
SW1
NTSC
(VCD only)
6
C
(CD/VCD) Page 62, 63
+D5
IC13, 14
TP1
4, 50, 60, 71
6
63
MUTE
64 Q11, 12
10 44
65
4, 8
66
3
27 ±12V
SERVO SIGNAL 1
13 29
PROCESSOR |
| 30 30 78
DF.DAC 3
17 | |
IC5 73
19 41 80
|
|
MN35511AL 76
25
58 8
16
9
|
59 11
18
XL1
12
16.9344MHz
21,22,24-28 7,10,14,15
62,67,68 32-34
8,11,13,23,
XL2 15,27,29, 64 73
8MHz
38
39
30
BUS
|
BUFFER
41
IC9
CD CPU
IC8
69
70
4
26
15
57,58 59,60 1,3-7 65
21
22
33
+5.4V
17
18 +5.4V
20
+D5
+3.3
U+5
+B
2 6
1,9 1,9 2 6
MOTOR MOTOR
DRIVE DRIVE
IC2 IC3
+12V
3 7 3 7
M M
SLIDE ROTARY
TRAY MOTOR
TABLE OP/CL UP/DWN
MOTOR
POSITION SW
DETECT
CD MECHA UNIT
D E
(INPUT) Page 64, 65
CB402 (GX-505VCD)
D.OUT
CB420 (GX-505)
CASSETTE MECHA
CD
R/P HEAD
VIDEO
Q403,404
OUT
MUTE
VCD E HEAD
MODULE
16 (VCD only)
IC11
17
18
BUS
IC10
BUFFER
71
IC10
54
19 LOAD
M
|
CD CONTROL
22
35
Q10 Q6, 7
LOAD OUT
Q9 CDB (FROM MAIN) LOAD IN
ON/OFF
R,REC
IC7, Q8
F,REC
CASS
CrO 2
IC6
(VCD only)
SOL
SENSOR
OUT
+5V
PLAY
SPEEDB
M
SPEEDA
TRAY
SW POSITION
DETECT
34
F
K9V
DECK
1
+
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
IC8 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
IC8 78 CPM
DRIVE
Q2,11
TAPE SPEED
VR7
G H
GX-505/GX-505VCD
(INPUT) Page 64, 65
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
35