Sony CDX-848X Service Manual page 30

CDX-848X
• Waveforms
– RF Board – – MAIN Board –
1 IC101 qh (FE) (CD play mode) 1 IC101 rd (MDP) (CD play mode)
Approx.
100 mVp-p
2 IC101 qk (TE) (CD play mode) 2 IC101 ih (LRCK), IC501 1 (LRCK)
(CD play mode)
Approx.
250 mVp-p
3 IC101 qg (RFAC) (CD play mode) 3 IC101 o; (BCK), IC501 3 (BCK)
(CD play mode)
1.4 ± 0.3 Vp-p
472 ns
4 IC101 od (XTAI), IC501 4 (CLKO)
(CD play mode)
5 IC201 ia (X1) (CD play mode)
2 Vp-p
3.8 µs
250 ns
6 IC501 6 (XTO) (CD play mode)
4.5 Vp-p
59.1 ns
22.7 µs
4.7 Vp-p
5.4 Vp-p
59.1 ns
• IC Block Diagrams
–RF Board –
IC101 CXA2581N-T4
3.9 Vp-p
A
B
C
D
DVC –
VOFST
+
VC
VC
LD 1
PD 2 APC AMP
6.2 Vp-p
EQ IN 3
RFAC
AC SUM 4 SUMMING
AMP
B
C
GND 5
A
D
B C D
A
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
B
DVC
D
DVC 14 A
C
RFAC 15
30 30
RW/ROM
30 DC OFST
29 RFDCI
–
–
+
28 RFDCO
+
DVC
DVC
VCC
VC
RW/ROM
27 VC
26 RFC
EQ 25 VFC
24 BST
EQ ON/OFF
RFAC
23 RFG
VCA
RW/ROM
VCC 22 VCC
VOFST 21 CEI
–
–
+
20 CE
+
DVC
VC
RW/ROM
19 TE BAL
RW/ROM
–
18 TE
+
VC
RW/ROM
RW/ROM
17 FEI
VOFST
–
–
+
16 FE
+
DVC
VC
RW/ROM