Ic Block Diagrams - Sony HCD-GSX75 Service Manual

HCD-GSX75
• Waveforms
– CD Board – – MAIN Board –
1 5
IC101 t; (RFAC) IC801 qd (XOUT)
(CD Play Mode)
0.96Vp-p
16MHz
200mV/DIV, 1 µ s /DIV 0.5V/DIV, 40ns /DIV
2
IC101 el (FE)
(CD Play Mode)
250mVp-p
100mV/DIV, 200 µ s /DIV
3
IC101 ra (TE)
(CD Play Mode)
470mVp-p
100mV/DIV, 200 µ s /DIV
4
IC104 yd (XI)
1.2Vp-p
16.9MHz
0.5V/DIV, 20ns /DIV
– DISPLAY Board –
6
IC701 id (X1)
3.8Vp-p
1.7Vp-p
4MHz
1V/DIV, 100ns /DIV

7-19. IC Block Diagrams

– CD Board –
IC103 CXA2581N-T4
DVC –
+
VC
VC
LD 1
PD 2 APC AMP
EQ IN 3
RFAC
AC SUM 4 SUMMING
AMP
GND 5
A B
A
A 6
B
B 7
C
C 8
D
D 9
E 10 GM
F 11 GM
APC-OFF
(Hi-Z)
SW 12
RW/ROM
(H/L)
DVCC 13
DVC
DVC 14
RFAC 15
44 44
RW/ROM
30 DC OFST
29 RFDCI
A
–
–
B
+
28 RFDCO
+
C
DVC
D
DVC
VCC
VC
RW/ROM
VOFST 27 VC
26 RFC
EQ 25 VFC
24 BST
EQ ON/OFF
RFAC
23 RFG
VCA
RW/ROM
VCC 22 VCC
VOFST 21 CEI
B
C
–
–
A
+
20 CE
+
D
C D
DVC
VC
RW/ROM
19 TE BAL
RW/ROM
–
18 TE
+
VC
RW/ROM
RW/ROM
B
17 FEI
VOFST
D
–
–
A
+
16 FE
+
C
DVC
VC
RW/ROM