Yamaha DVD-C996 Service Manual page 50

A B
DVD-C996/DV-C6280
SCHEMATIC DIAGRAM (MAIN P.C.B. (2/3) & CM P.C.B.)
1 Q Q
3 7 6 3 1 5 1 5 0
2
3
4.9 4.2
MAIN (1)
P64
A-5
4
T E
L 1 3 9 4 2 2 9 6 5 1 3
5
6
7
IC353 : TC7S08F
AND
IN B 1 5 VDD
IN A 2
VSS 3 4 OUT X
w w w
8
* 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.
63
C D E
CIRCUIT CHANGES BY MARKET.
r
w q
1.6
3.7
4.1
0
EEP ROM
1.8
4.2
4.2
4.2
4.2 4.2
1.9
1.8 4.2
2.0
4.2 4.2
0
4.2
0 0
2.1
5
M95640-WMN6T 2.1
0
1.9 2 4
3 0
0
4.2
4.2
4.2
0
4.2
4.2
4.2
4.2
0
IC352 : M95640-WMN6T
Electrically Erasable PROM
IC354 : TC7SU04F
Inverter CS 1 8 VCC
SO 2 7 HOLD
VDD OUT Y
5 4
WP 3 6 SCK
GND 4 5 SI
VCC GND
1 2 3
NC IN Y VSS 8 4
STATUS MEMORY ARRAY ADDRESS
REGISTER 128/256/512 x 8 DECODER
x a o
DATA
SI 5
REGISTER
. i
OUTPUT 2
SO
BUFFER
MODE
CS 1 DECODE
LOGIC
3
WP
CLOCK
GENERATOR
6 7
SCK HOLD
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-20.0
-18.0
-16.0
-18.0
-20.0
-20.6
-20.6
PANEL CPU
-25.7
e -22.9
-25.7
-22.9
-22.9
-23.3
-23.3
-23.3
-23.3
-23.2
-23.2
-23.2
-23.2
-23.2 Q Q
3 7
-23.5
-23.5
-23.5
-23.5
4.2
u 1 6 3
y
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H I
Point q (Pin10 of IC351)
H : 0.1 µsec/div
V : 2V/div
DC range 2 1 : 1 probe 4
8 9 9
0V
Point w (XL352)
H : 20 µsec/div
V : 2V/div
DC range 1 : 1 probe
0V
-20.0
Point e
CH1 : Pin8 of IC351 V : 2V/div (CH1)
V : 2V/div (CH2)
CH2 : Pin26 of IC351
H : 5 sec/div DC range 1 : 1 probe
CH 1
CH 2
POWER ON POWER OFF
Point r (Pin4 of IC354)
H : 20 µsec/div
V : 2V/div
DC range 1 : 1 probe
0V
6 3 1 5 1 5 0 8 9
IC400 : BA6286
Motor Driver
VCC VM
9 8
m
POWER
SAVE
c o
DRIVER
RIN
. 2
CONTROL
FIN 10
LOGIC
VREF
3
TSD DRIVER
1 6
GND RNF
J K L
TC7SU04F AT25010
TC7S08F
2
8 9 9
5
4
8
5
4
3
1
1
MN101CP35D
75 51
76 50
100 26
25
1
BA6286
10
1
LA6510
10
1
2 4 9 8 2 9 9
MOTOR DRIVE
MAIN (1)
7.1 12.8
P64
7.5
A-4
0
12.9
406 10
0 6 407
1 8
9 0
82K
0 7
0
409 100K 408 120K
402
410 411 110K
0
1 0 3
412
0 4
2 0
5
110K
1
413 -8.9
IC401 : LA6510
Dual Power Operational Amp
4 3 10 7 6
VOUT1 2 8 VOUT2
VSENSE1 1 9 VSENSE2
OUT 1
7
4 OUT 2
5
5