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CDX-424RF
7-3.
SCHEMATIC DIAGRAM RF Section
· See page 31 for Waveforms.
· See page 32 for IC Block Diagrams.
(Page 27)
The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
Les composants identifiés par une marque ! sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié.
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CDX-424RF
SERVICE MANUAL
US Model Canadian Model E Model
Model Name Using Similar Mechanism CD Drive Mechanism Type Optical Pick-up Name
CDX-505RF MG-250C-137 KSS-521A/J2N
SPECIFICATIONS
COMPACT DISC CHANGER SYSTEM
MICROFILM
CDX-424RF
7-6. SCHEMATIC DIAGRAM MAIN Section (1/2) · See page 31 for Waveforms. · See page 33 for IC Block Diagrams.
(Page 22)
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CDX-424RF
7-7. SCHEMATIC DIAGRAM MAIN Section (2/2) · See page 31 for Waveforms. · See page 33 for IC Block Diagrams.
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· Waveforms RF Board
1 IC11 #£ (RF O) 500 mV/DIV, 500 ns/DIV
MAIN Board (1/2)
1 IC101 @¶ (MDP)
MAIN Board (2/2)
6 IC401 !£ (MCK)
· IC Block Diagrams RF Board IC11 CXA1992BR
RFTC RF M PD1 RF O CC1 PD2 PD CP CB CC2 LD FOK RF I
39
38
37
36
35
34
33 32
31 30
29
28
27
2.5 Vp-p
6 Vp-p 1.4 Vp-p
PD 2 I-V AMP PD 1 I-V AMP PD AMP LD AMP RF SUMMING AMP
FOCUS OK COMPARATOR
VCC
7.6 µs
2 IC11 2 (FEI) 50 mV/DIV, 1 µs/DIV 2 IC101 %º (LRCK)
59.5 ns
7 IC401 !§ (XO)
FE 40 BIAS
IFB1 IFB6
LASER POWER CONTROL PEAK/BOTTOM HOLD PEAK/BOTTOM HOLD FOCUS BIAS WINDOW COMPARATOR
FOH FOL
MIRR COMPARATOR DEFECT AMP
IIL TTL
LDON
LPCL
TGFL
LPC
F 41
F I-V AMP E I-V AMP TGFL TRACKING GAIN WINDOW COMPARATOR TGH TGL BALH BALL ATSC
CC1
6 Vp-p
MIRR
DFCT1
5.8 Vp-p
VEE
FOCUS ERROR AMP
Approx. 110 mVp-p
22.7 µs
3 IC11 $¶ (TEI) 200 mV/DIV, 500 µs/DIV 3 IC101 %¢ (BCK)
E 42 EI 43 VEE 44 TEO 45
IIL TTL IIC DATA REGISTER, INPUT SHIFT REGISTER, ADDRESS DECODER, SENSE SELECTOR, OUTPUT DECODER TTL IIL
26 SENS2 25 SENS1 24 C. OUT
58.6 µs
8 IC401 @£ (BCK)
VEE
TOG1 TOG4 BAL1 BAL4
23 22 21 20 19
XRST DATA XLT CLK LOCK
TG1 TG2
IFB1 IFB6 BAL1 BAL4 TOG1 TOG4
TM1 TM7
PS1 PS4
FS1 FS4
DFCTO
LPFI 46 TEI 47
E-F BALANCE WINDOW COMPARATOR ATSC WINDOW COMPARATOR TZC COMPARATOR TM1
TZC
FZC
VCC VCC ISET
18 VCC
6.2 Vp-p
7.6 Vp-p
ATSC 48
TM6
17 ISET
Approx. 280 mVp-p
472 ns
4 IC101 *ª (XTAI)
TZC 49
16 SL O 15 SL M TRACKING PHASE COMPENSATION
TDFCT 50
9 IC401 @¢ (LRCK)
VC 51 FZC 52
TG1 VCC CENTER VOLTAGE GENERATOR FZC COMPARATOR FOCUS PHASE COMPENSATION VCC VEE CHARGE UP FS1
TM5
VEE VCC TM7 TM4
6 Vp-p
7.3 Vp-p
DFCT
FS4
FS2 FSET
59.2 ns
5 IC302 #¡ (EXTAL)
22.7 µs
VEE 1
FEO
TG2
TM3
VEE 9
TGU
2
FEI
3
FDFCT
4
FGD
5
FLB
6
FE O
7
FE M
8
SRCH
10
TG2
11
FSET
12
TA M
3.8 Vp-p
124 ns
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TA O
+ TM2
+
472 ns
DFCT
14 SL P
13
IC52
OUT1 1
BA6287F
8 GND
VM 2
7 OUT2
DRIVER TSD
DRIVER
VCC 3
CONTROL LOGIC
6 VREF
POWER SAVE FIN 4 5 RIN
MAIN Board IC101 CXD2530Q
MNT0 MNT1 MNT3 XROF C2PO RFCK GFS XPCK XUGF GTOP VDD VSS TES4 BCK TES3 PCMD TES9 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 WFCK TES5 EMPH TES6 VDD VSS EXCK SBSO SCOR DOUT C4M FSTT XTSL 71 70 69 68
80 79 78 77 76 75 74 73 72
NC VSS VDD NC TES7 NC VSS XVDD XTAI XTAO XVSS VSS NC TES8 NC VDD VSS NC NC XRST
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
50 LRCK 49 WDCK 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 ASYE ASYO ASYI BIAS RF AVDD CLTV AVSS FILI FILO PCO VCTL V16M VCKI VPCO1 VPCO2 TES1 TES0
ERROR CORRECTOR EFM DEMODULATOR
D/A INTERFACE
ASYMMETRY CORRECTOR
16K RAM
DIGITAL OUT
DIGITAL PLL
SUB CODE PROCESSOR
OSC
CLOCK GENERATOR TIMING LOGIC SERVO AUTO SEQUENCER
CPU INTERFACE
DIGITAL CLV
1 2 3 4 5 6 VDD VSS LMUT RMUT TES2 CKOUT
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 XLTO CLKO SPOA SPOB SPOC SPOD XLON FOK VDD VSS MON MDP MDS LOCK PWMI SQCK SQSO SENS DATA XLAT CLOK SEIN CNIN DATO
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IC204
BUS ON VCC
BA8272F-E2
DATA OUT LINK OFF CLK OUT DATA IN RESET
IC301
OUT1 1
BA6287F
8 GND
14
13
12
11
10
9
8
RESET SWITCH
VM 2
7 OUT2
DRIVER TSD
1
BUS ON OUT
DRIVER
2
BUS ON IN
3
GND
4
BUS CLK
5
VREF
6
BUS DATA
7
BUS RESET
VCC 3
CONTROL LOGIC
6 VREF
POWER SAVE FIN 4 5 RIN
IC401
LRCK
TC9464FN-EL
(EMP) SH DATA GNDX ZD (SM) ATT (BS) LA BCK HS MCK GNDD VDX XO
16
24 23 22
21
20
19
18
17
15
XI VDA
14 13
INTERFACE CIRCUIT
MICROCOMPUTER INTERFACE CIRCUIT
OSC
DIGITAL FILTER CIRCUIT ATTENUATOR OPERATIONAL CIRCUIT DEEMPHASIS FILTER CIRCUIT D- MODULATION CIRCUIT
TIMING GENERATOR
TEST CIRCUIT
OUTPUT CIRCUIT ANALOG FILTER
OUTPUT CIRCUIT ANALOG FILTER
1
2
3 4
5
6
7
8
9
10 11 12
GNDA
GNDA
VDD
P/S VDA
RO
VR
LO
T1
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