Sony HCD-HPZ7 Service Manual page 76

HCD-HPZ7/HPZ9
• Waveforms
– MAIN Board – – BD Board –
1 4
IC306 qa (XCOUT) IC201 u; (RFACO)
(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)
1 V/DIV, 10 µ s/DIV
7
IC201 5 (BCK)
8.8 Vp-p
13.6 µs
(CD PLAY mode)
5 V/DIV, 5 µ s/DIV
1 V/DIV, 200 ns/DIV
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
• IC Block Diagrams
– BD Board –
IC402 BA5947FM-E2
28 27 26
1 2 3
– AMP Board –
IC601 STK433-060 (HPZ7:CND)
IC601 STK433-070 (HPZ7:AEP,UK,CET)
IC601 STK403-090-S (HPZ9)
PRE DRIVER R1
TR3
IC CH1
R2
C1
1 2 3 4 5
76 76
25 24 23 22 21 20 19 18 17
MUTING D D
+ –
INTERFACE
INTERFACE
INTERFACE
D D
VREF
4 5 6 7 8 9 10 11 12
C3 C4
TR1 TR4
R5 R7
R3 PRE DRIVER
TR6
IC CH2
R4
R6 R8
C2
TR2 TR5
BIAS CIRCUIT
SUB
6 7 8 9 10 11 12
16 15
D D
LEVEL SHIFT
D D
13 14
IC602 RT8H015C-T112-1
6 5 4
OVER LOAD DC
DETECT DETECT
1 2 3