Yamaha GX-500 Service Manual Page 77
- Page / 103
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
ABCDEFGH
1
2
3
4
5
6
IJK
7
8
GX-900
■ SCHEMATIC DIAGRAM (OPERATION)
* All voltage are measured with a 10MΩ/V DC electric volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
IC810 : µPC4570HA
Dual OP-Amp
V
O1
2
–Vm
1
3
+Vm
1
4
V
EE
5
+Vm
2
6
–Vm
2
7
V
O2
8
V
CC
9
V
CC
1
1
–+
–+
2
IC814 : YSS247-D
YMERSION
AIL
CL
FCL
FOL
WL
TA L
TBL
AOL
AIR
AVDD
VREF
SW
AVSS
FOR
WR
TA R
TBR
AOR
VREF
LOGIC
COMPARATORS
TO SWITCHES
11
14
17
13
15
8 3
2
1
24
23 22
12
5
20
19 18
+1
+1
SWITCH SWITCH
SWITCHFILTER
FILTER
YMERSION TONE CONTROL
–1
SWITCH
SWITCH
SWITCH
–1
+1
+1
CR
FCR
10 7
6
IC815 : M66004MASP
FL Driver
P1
18
17
DISPLAY
CONTROL
REGISTER
OUTPUT
PORT
(2BIT)
SERIAL
RECEIVE
CIRCUIT
DIGITAL
OUTPUT
CIRCUIT
DISPLAY
CONTROLLER
CLOCK
GENERATOR
P0
XOUT
20
XIN
21
CS
14
SCK
15
SDATA
16
RESET
13
DIG00
12
61
DIG15
DIG12
64
1
DIG11
SEG00
59
23
SEG35
SEG27
31
33
SEG26
SEGMENT
OUTPUT
CIRCUIT
DISPLAY CODE
REGISTER
(8BITx16)
CGROM
(35BITx160)
DECODER
CGRAM
(35BITx16)
DECODER
CODE
SELECT
CODE
WRITE
RAM
WRITE
CORD/
COMMAND
CONTROL
CIRCUIT
MUTING
BUFFER
YMERSION
FL
DRIVER
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
5.0
1.6
0
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0
0
0.9
5.0
4.9
0.6
0
0
0
0
4.9
4.9
0
0
0
0
0
0
0
0
12.1
12.4
5.0
-6.0
-6.0
-11.8
0
0
0
0
0
00
5.3
5.5
4.5
4.5
5.3
5.5
5.5
5.3
3.3
-26.8
-21.4
-24.8
-24.8
-24.8
-24.8
-24.8
4.5
-24.8
-24.8
-24.8
-24.8
-24.8
-24.9
-25.0
-25.0
-25.0
4.6
4.2
~
~
~
~
~
~
~
~
~
4.6
4.5
2.2
2.2
-26.8
0
-24.8
-24.8
-21.0
-21.0
-25.0
-25.0
-25.0
-24.9
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
-21.0
-21.0
7
9
8
2
5
6
4
3
88
P87
H-2
P87
G-9
P87
H-9
- MINI COMPONENT SYSTEM 1
- ■ TO SERVICE PERSONNEL 2
- ■ FRONT PANELS 4
- ■ REAR PANELS 5
- ■ SPECIFICATIONS 6
- ■ INTERNAL VIEW 7
- P.C.B. Main (2) 11
- P.C.B. Input 11
- P.C.B. Main (1) 11
- Friction 12
- Disc Table 13
- P.C.B. MD 15
- Mechanism SW P.C.B 16
- Loading Motor 16
- Sled motor 16
- Turn Table 17
- Spindle Motor 17
- Optical Pickup Head 17
- MD Guide (B) 17
- ■ VOLUME RANGE 18
- ■ SYSTEM CONTROL CHECK 18
- ■ TEST MODE 19
- ■ SYSTEM TEST MODE 19
- ■ RECEIVER TEST MODE 20
- ■ TAPE TEST MODE 21
- ■ CD TEST MODE 22
- ■ CD ERROR MESSAGES 23
- ■ CD STANDARD OPERATION CHART 24
- ● OPEN operation 26
- ● DOWN operation 26
- ■ TAPE ADJUSTMENTS 28
- “MECHANICAL ADJUSTMENT” 29
- “ELECTRICAL ADJUSTMENT” 29
- < Recording section > 30
- MD TEST MODE 31
- 2. AUTO adjustment mode 33
- 8. TEST-PLAY mode 33
- MECHANISM ADJUSTMENT 36
- ■ MD ERROR DISPLAY 39
- Mechanism Error 40
- ■ MD TROUBLESHOOTING 41
- ■ IC DATA 46
- ATRAC Encoder/Decoder 47
- MD System Microprocessor 49
- IC11 : M38199EF [P.C.B. CD] 55
- -COM (CD CPU) 55
- IC8 : M38199EF [P.C.B. INPUT] 58
- -COM (SYSTEM CPU) 58
- PATTERN AREA 60
- ■ BLOCK DIAGRAM 61
- POWER OFF^STANDBY 64
- Note : y ~ o 65
- P.C.B. TUNER 66
- (Lead Type Device) 66
- P.C.B. CD (Lead Type Device) 67
- FROM : INPUT (1) 68
- P. C. B. INPUT ( 2 ) 69
- TO: OPERATION(3) 70
- P.C.B. MAIN(1) 71
- ■ PIN CONNECTION DIAGRAM 72
- ■ SCHEMATIC DIAGRAM (MD MAIN) 73
- ■ SCHEMATIC DIAGRAM (MD) 74
- ■ SCHEMATIC DIAGRAM (CD) 75
- ■ SCHEMATIC DIAGRAM (INPUT) 76
- YMERSION 77
- ■ SCHEMATIC DIAGRAM (MAIN) 78
- ■ SCHEMATIC DIAGRAM (TUNER) 79
- PARTS LIST 80
- P.C.B. CD 81
- P.C.B. CD & MD 82
- P.C.B. INPUT 83
- P.C.B. INPUT & MAIN 85
- P.C.B. MAIN & OPERATION 86
- P.C.B. OPERATION & TUNER 87
- P.C.B. MD MAIN 89
- P.C.B. MD MAIN & OTHER 91
- CHIP RESISTOR 92
- ■ MECHANICAL PARTS 94
- New Parts 95
- GREASE APPLICATION DIAGRAM 99
- (MD Recorder) 99
- ● Grease to be supplied 100
- REMOTE CONTROL TRANSMITTER 101
- 1/4W Type 102
- 1/6W Type 102
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