Sony ICF-CD855V Service Manual page 28

ICF-CD855V
• Waveforms
– CD Board –
– TUNER Board –
1 IC701 4 (RF) (CD play mode) qa IC2 w; (XOUT)
1.3 Vp-p
13.3 µ s
2 IC701 qd (FE) (CD play mode)
Approx.
300 mVp-p
3 IC701 qg (TE) (CD play mode)
Approx.
250 mVp-p
4 IC701 rk (XOUT) (CD play mode)
2.7 Vp-p
59.1 ns
– MAIN Board –
wa IC401 ua (XT2)
1.7 Vp-p 2.8 Vp-p
30.5 µ s
ws IC401 ug (X2) (CD play mode)
3.1 Vp-p
239 ns
28
• IC Block Diagrams
– CD Board –
IC701 LC78646E-E
80 79 78 77 76 75 74 73 72 71
FIN1
+
–
MIX EQ
FIN2
+
–
LPF
TIN1
+
TBAL
–
TIN2
+
TBAL
–
LEVEL SET
REFI
RAM
DEFECT
SERVO PROCESSOR
A/D
ADAVDD
ADAVSS
JITTC
JITTER
DETECT
SLCO
1
SLCO
SLCIST
SLICE LEVEL
SLCIST 2
EFMIN CONTROL
EFMIN 3
RF
RF 4
RFVDD 5
PDO1
RFVSS 6
PDO2
FIN1
FIN1 7
FR
FIN2 PLL
FIN2 8 PCKIST
VCEC
TIN1
VVDD
TIN1 9
TIN2
VVSS
CLV,CAV
TIN2 10
VREF
CONTROL
SBCK/FG
VREF 11
REFI
REFI 12
FE
FE 13
16MOUT
TEC
TEC 14
XVSS
TE
15 CLOCK
TE XIN
RFMON
GENERATOR
RFMON 16 XOUT
JITTC
XVDD
JITTC 17
ADAVDD
WRQ
ADAVDD 18
ADAVSS
CL
ADAVSS 19
TDO
COMMAND
CE
20
TDO
INTERFACE
DI
CORRECTION
DO
AUDIO CD
CONT1-3
GENERAL PURPOSE
SBCK/CONT6
PORTS
CONT4,5
INTERPOLATION
8FS
ATTENUATION
DIGITAL FILTER
DEEMPHASIS
1BIT DAC
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
28
70 69 68 67 66 65 64 63 62 61
AGC PH
BH
LPF SW +
–
LPF + +
– –
RFMON
MONI
–
CONT
+
VREF
DATA
LDD
TRACK JUMP APC LDS DATACK
LRSY
ASDFIN
AUTO ADJUST
ASDACK
ASLRCK
TDO
16MOUT
FDO
S/H
SW D/A SPDO EFLG
SLDO
C2F
GPDAC
XVSS
DRF
FSX/16MIN
DRF
XIN
XOUT
RUPTURE DEFECT
XVDD
RVDD
FRAME SYNC
RCHO
FSEQ
DETECT,PROTECT,INSERT,
RVSS
EFM DECODE
LVSS
V/P
LCHO
LVDD
SUBCODE DECODE CRC
MONI1-5
MONITOR SIGNAL SELECTOR
RAM
EFLG
ERROR
C2F
FSX/16MIN
ASDFIN
ASDACK
EXTERNAL
AUDIO IN ASLRCK
DATA
MUTE
SERIAL DATACK
OUT LRSY
AUDIO OUT
LVDD
LVSS
LCHO
LPF
RCHO
RVDD
RVSS
39 40
60 DATA
59
DATACK
58 LRSY
57 ASDFIN
56 ASDACK
55 ASLRCK
54 16MOUT
53 EFLG
52 C2F
51 XVSS
50
FSX/16MIN
49 XIN
48 XOUT
47 XVDD
46 RVDD
45 RCHO
44 RVSS
43 LVSS
42 LCHO
41
LVDD