Sony HCD-HPZ7 Service Manual page 76

HCD-HPZ7/HPZ9
Q Q
3 7 6 3 1 5 1 5 0
• Waveforms
– MAIN Board – – BD Board –
4
1 IC201 u; (RFACO)
IC306 qa (XCOUT)
(CD PLAY mode)
1.4 Vp-p
31.25 µs
50 mV/DIV, 20 µ s/DIV
200 mV/DIV, 500 ns/DIV
5
2 IC201 <z/, (XTAO)
IC306 qd (XOUT)
(CD PLAY mode)
1.7 Vp-p
63.6 ns
50 mV/DIV, 20 ns/DIV 1 V/DIV, 20 ns/DIV
6
IC201 1 (LRCK)
(CD PLAY mode)
– AU-TC Board –
3
Q321 collector
(TAPE REC mode)
T E
L 1 3 9 4 2 2 9 6 5 1 3
1 V/DIV, 10 µ s/DIV
7
8.8 Vp-p IC201 5 (BCK)
13.6 µs
(CD PLAY mode)
5 V/DIV, 5 µ s/DIV
1 V/DIV, 200 ns/DIV
w w w
HCD-HPZ7/HPZ9
0.5 to 1.3 Vp-p
2.3 Vp-p
59.4 ns
3.3 Vp-p
22.8 µs
3.3 Vp-p
472 ns
x a o
y
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8
• IC Block Diagrams
– BD Board –
IC402 BA5947FM-E2
28 27 26
1 2 3
Q Q
3 7 6 3
– AMP Board –
IC601 STK433-060 (HPZ7:CND)
IC601 STK433-070 (HPZ7:AEP,UK,CET)
IC601 STK403-090-S (HPZ9)
R5
PRE DRIVER R1
TR3
IC CH1
R2
R6
C1
1 2 3 4 5
u 1 6 3
.
76 76
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2 4
9 9
25 24 23 22 21 20 19 18 17
MUTING D D
+ –
INTERFACE
INTERFACE
INTERFACE
D D
VREF
5 7 9 11
4 6 8 10 12
1 5 1 5 0 8 9 2 4
C3 C4
TR1 TR4
R7
R3 PRE DRIVER
TR6
IC CH2
R4
R8
C2
TR2 TR5
BIAS CIRCUIT
SUB
6 7 8 9 10 11 12
m
c o
2
8 9 9
16 15
D D
LEVEL SHIFT
D D
13
14
9 8 2 9 9
IC602 RT8H015C-T112-1
6 5 4
OVER LOAD DC
DETECT DETECT
1 2 3