Sony CDX-454RF Service Manual page 32

CDX-454RF/454XRF
• Waveforms
– RF Board – – MAIN Board –
1 IC101 t; (FE)
1 IC101 qh (RFO)
1.4 ± 0.3
Vp-p
2 IC101 qf (FE) 2 IC101 ts (TE)
Approx.
63 mVp-p
3 IC101 qd (TE) 3 IC101 ya(RFAC)
Approx.
83 mVp-p
4 IC101 uj (LRCK), uk (LRCKI)
5 IC101 ia (BCK), is (BCKI)
470 ns
6 IC101 ih (XTAI)
Approx.
63 mVp-p
59.1 ns
7 IC201 ra (EXTAL)
Approx.
83 mVp-p
83 ns
1.4 ± 0.3
Vp-p
5.6 Vp-p
22.8 µs
5.6 Vp-p
– FM Board –
1 IC701 qd (XOUT)
4.1 Vp-p
131.6 ns
2 IC701 qa (RF OUT)
656 mVp-p
4.4 Vp-p
14.3 ns
32 32
• IC Block Diagrams
– RF Board –
IC101 CXA2596M-T6
HOLD 1
AGCVTH 2
3.4 Vp-p
APC LD
LD 3
AMP
APC PD
PD 4
AMP
AGC
COMPARATOR
A 5
B 6
RF SUMMING
C 7 AMP
D 8
FOCUS ERROR
VEE 9
AMP
F 10
F I-V AMP
E 11 E I-V AMP
VCC
VC 12
VEE
24 VCC
23 LC/PD
22 LD ON
21 HOLD SW
20 AGCCONT
19 RF BOT
18 RFTC
COMPARATOR
17 RF I
RF EQ
16 RFO
AMP
15 RFE
14 FE
TRACKING
13 TE
ERROR
AMP