HCD-VX5A/VX5AJ/VX7A SERVICE MANUAL. MINI Hi-Fi COMPONENT SYSTEM. E Model HCD-VX5A/VX7A Tourist Model HCD-VX5AJ SPECIFICATIONS

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SERVICE MANUAL E Model CD-VX5A/VX7A Tourist Model CD-VX5AJ CD-VX5A/VX5AJ/VX7A is the Amplifier, Video CD player, Tape Deck and Tuner section in MC-VX5A/VX5AJ/VX7A.

DOLBY and the double-d symbol a are trademarks of Dolby Laboratories Licensing Corporation.

1 SERVICE MANUAL E Model CD-VX5A/VX7A Tourist Model CD-VX5AJ CD-VX5A/VX5AJ/VX7A is the Amplifier, Video CD player, Tape Deck and Tuner section in MC-VX5A/VX5AJ/VX7A. Photo: CD-VX7A Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. DOLBY and the double-d symbol a are trademarks of Dolby Laboratories Licensing Corporation. CD Section Model Name Using Similar Mechanism CD Mechanism Type Base Unit Name CD-GRX50/RXD7 CDM38L-5BD34L BU-5BD34L Optical Pick-up Name KSS-213D/Q-RP Tape deck Section Model Name Using Similar Mechanism Tape Transport Mechanism Type CD-GRX50/RXD7 TCM-230AWR2 SPECIFICATIONS Continued on next page MINI i-fi COMPONENT SYSTEM MICROFILM

2 7-8. SCEMATIC DIAGRAM BD Board See page 75 for Waveforms. See page 76 for IC Block Diagrams. (Page 37) Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : CD STOP ( ) : CD PLAY The components identified by mark! or dotted line with mark! are critical for safety. Replace only with part number specified

3 7-9. SCEMATIC DIAGRAM VIDEO Board (1/2) See page 43 for Waveforms. See page 78 for IC Block Diagram. (Page 35) (Page 57) (Page 39) Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : VIDEO CD PLAY 37 38

4 7-10. SCEMATIC DIAGRAM VIDEO Board (2/2) See page 43 for Waveforms. CD-VX5A/VX5AJ/VX7A (Page 38) Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark :VIDEO CD PLAY : Impossible to measure 39 40

5 Waveforms VIDEO Board 1 IC501 5 (LRCK) 6 IC505 3 (CD-BCK)! IC505 ( (PGIO2/VSYNK/CSYNK)! Q303, 304 J301 3 (COUT) 5 Vp-p 4.8 Vp-p 3.1 Vp-p 1 Vp-p 1 Vp-p 1 Vp-p 22.8 µs 472 ns 16.7 ms 27 Mz 2 IC501! (BCLK) 7 IC505 5 (CD-LRCK)! IC505 ` fl (K-IN)! Q308 IC401 J301 4 (YOUT) 4.4 Vp-p 4.8 Vp-p 4.3 Vp-p 0.9 Vp-p 1.8 Vp-p 1.7 Vp-p 472 ns 22.8 µs 8.7 ms 3 IC502! (XOUT) 8 IC505 ^ª (Y-OUT)! IC505 ` (DA-LRCK), IC509!ª (LRCK)! IC509 4 IC Vp-p 1.7 Vp-p 6 Vp-p 4.9 Vp-p 1 Vp-p 10 Mz 22.6 µs 37 ns 4 IC502! (XIN) 9 IC505 & (C-OUT)! IC505 ` (DA-BCK), IC509! (BCK)!ª IC Vp-p 0.5 Vp-p 4.8 Vp-p 5.1 Vp-p 1 Vp-p 10 Mz 472 ns 59 ns 5 IC502 $ (BUS) 0 IC505 * (DA-XCLK)! Q301 IC Vp-p 5.2 Vp-p 1.8 Vp-p 4.8 Vp-p 2 Vp-p 16.7 ms 60 ns 30 ns 43 44

6 7-13. SCEMATIC DIAGRAM CD MOTOR Section See page 77 for IC Block Diagrams. DISC TRAY ADDRESS DETECT DISC TRAY SLIDE CLOSE OPEN B (Page 57) (DISC TRAY SLIDE) DISC TRAY TURN DISC IN DETECT SENSOR DISC TRAY SENSOR DISC TRAY TURN MOTOR DRIVER C (Page 57) LEVEL SIFT Voltages are dc with respect to ground under no-signal conditions. no mark : CD STOP 47 48

7 7-15. SCEMATIC DIAGRAM AUDIO Board See page 79 for IC Block Diagram. (PLAYBACK) PB EQ AMP (DECK A) PB LEVEL (L) (DECK A) PB LEVEL (R) (DECK A) PB EQ AMP (DECK B) PB LEVEL (L) (DECK B) PB LEVEL (R) (DECK B) D (Page 61) SWITCING REC BIAS (R) (DECK B) REC BIAS (L) (DECK B) REC BIAS -6.8 BIAS OSC Voltages are dc with respect to ground under no-signal conditions. no mark : TAPE PLAY ( ) : RECORD The components identified by mark! or dotted line with mark! are critical for safety. Replace only with part number specified

8 7-16. PRINTED WIRING BOARD LEAF SW Board See page 32 for Circuit Boards Location. Semiconductor Location 05 (DECK A PLAY) (CAPSTAN) 4 DECK B PLUNGER SCEMATIC DIAGRAM LEAF SW Board DECK A PLUNGER (DECK A 120/70) (DECK A ALF) (DECK A REC) (DECK B ALF) (DECK B REC) DECK A PLUNGER ROTATION DETECT SENSOR (DECK A) ( ) 3 4 (DECK A ALF) (DECK A 120/70) (DECK A REC) CONTROL SWITC E (Page 55) ROTATION DETECT SENSOR (DECK B) (DECK B PLAY) (DECK B ALF) DECK B PLUNGER (DECK B 120/70) (DECK B REC) E (Page 61) Ref. No. Location D141 E-10 D191 D-12 D331 E-1 D333 F-1 D334 E-1 D335 F-1 D401 G-11 D403 F-12 D405-6 D406 I-4 D407 I-2 D411 G-1 D501 D-7 D502 E-6 D503 D-6 D504 D-7 D505 D-7 D506 D-7 D507 E-6 D509 F-2 D607 E-5 D644 C-8 D801 I-11 D802 G-9 D803 G-11 D831 I-6 D832 I-7 D851 I-10 D852 G-9 D881-9 D901 I-4 D902 I-4 D903 I-4 D904 I-4 D905 I-1 D906-1 D907 I-5 D908 I-5 D909 I-5 D910 I-5 D915 I-4 D917 F-4 D918-3 D919-3 D921-4 D922 G-4 D923 G-4 D924 F-2 D925 G-4 IC101 C-10 IC301 B-3 IC381 A-12 IC501 D-5 IC502 D-7 IC IC901 G-6 IC902 G-4 IC903-4 IC904-3 Ref. No. Location Q111 D-10 Q112 D-10 Q113 E-9 Q161 C-9 Q162 C-9 Q163 E-9 Q191 D-12 Q192 E-10 Q201 D-9 Q251 C-9 Q331 C-1 Q332 C-2 Q333 C-2 Q334 C-2 Q335 D-1 Q336 F-1 Q337 F-1 Q338 F-1 Q339 F-1 Q340 E-1 Q341 E-1 Q342 F-1 Q343 E-1 Q401 F-12 Q402 E-12 Q411 G-1 Q412 G-1 Q431 G-12 Q432 G-11 Q433 F-11 Q434 F-11 Q435 F-11 Q436 F-11 Q437 G-12 Q439 F-12 Q471 F-2 Q501 D-7 Q508 D-7 Q509 E-7 Q Q803 G-10 Q804 G-9 Q831 G-10 Q832 G-10 Q851 I-10 Q881 I-9 Q901-2 Q902 I-1 Q903-1 Q904 G-4 Q905 G-4 Q907 G-5 Q908 G-4 Q909 I-4 Q911 G-3 Q912 G-4 Q913-1 Q914 G-2 Q923-1 Q951 G-2 Q952-1 (DECK B 120/70) (DECK A PLAY) (DECK B PLAY) Voltages are dc with respect to ground under no-signal conditions. no mark : TAPE PLAY ( ) : RECORD : Impossible to measure 53 54

9 7-19. SCEMATIC DIAGRAM MAIN Board (1/4) See page 75 for Waveforms. (Page 74) (Page 59) (Page 37) (Page 48) (Page 63) (Page 48) (Page 62) Voltages are dc with respect to ground under no-signal (detuned) conditions. no mark : TUNER (FM/AM) ( ) : CD PLAY

10 7-20. SCEMATIC DIAGRAM MAIN Board (2/4) See page 75 for Waveforms. (Page 58) (Page 71) (Page 62) (Page 64) Voltages are dc with respect to ground under no-signal (detuned) conditions. no mark : TUNER (FM/AM) The components identified by mark! or dotted line with mark! are critical for safety. Replace only with part number specified

11 7-21. SCEMATIC DIAGRAM MAIN Board (3/4) See page 75 for Waveforms. (Page 58) (Page 59) (Page 63) (Page 71) (Page 68) (Page 63) (Page 52) (Page 54) Voltages are dc with respect to ground under no-signal conditions. no mark : TUNER (FM/AM) ( ) : CD PLAY { } : PLAYBACK (DECK A) [ ] : PLAYBACK (DECK B) : RECORD 61 62

12 7-22. SCEMATIC DIAGRAM MAIN Board (4/4) See page 75 for Waveforms. (Page 60) (Page 58) (Page 62) (Page 62) Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : TUNER (FM/AM) ( ) : CD PLAY { } : PLAYBACK (DECK A) [ ] : PLAYBACK (DECK B) : RECORD

13 7-24. SCEMATIC DIAGRAM PANEL Board See page 75 for Waveform. See page 79 for IC Block Diagrams. (Page 70) (Page 62) Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : TUNER (FM/AM) 67 68

14 7-25. PRINTED WIRING BOARD CD SW Board See page 32 for Circuit Boards Location SCEMATIC DIAGRAM CD SW Board (Page 67) (Page 66) 69 70

15 7-27. PRINTED WIRING BOARD TRANSFORMER Board See page 32 for Circuit Boards Location. Semiconductor Location Ref. No. Location D971 A-2 D972 A-1 D973 A-1 Q971 A-1 (Page 55) (Page 55) SCEMATIC DIAGRAM TRANSFORMER Board (Page 60) (Page 62) Voltages are dc with respect to ground under no-signal (detuned) conditions. no mark : TUNER (FM/AM) The components identified by mark! or dotted line with mark! are critical for safety. Replace only with part number specified

16 7-29. PRINTED WIRING BOARD SURROUND Board See page 32 for Circuit Boards Location SCEMATIC DIAGRAM SURROUND Board See page 75 for Waveform. See page 78 for IC Block Diagrams. (Page 57) (Page 56) Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : TUNER (FM/AM) 73 74

17 Waveforms BD Board 1 (MDP) 6 IC101 ^ (LRCK) MAIN Board 1 IC501 0 (XC-IN) 2.6 Vp-p 5.2 Vp-p 1.8 Vp-p 7.5 µs 2 IC101 #ª (FE) (CD Play mode) 7 IC101 ^ (BCLK) 22.7 µs kz 2 IC501! (XIN) 0.2 mvp-p 5.2 Vp-p 2.2 Vp-p 3 IC101 $ (TE) (CD Play mode) 474 ns 8 IC101 & (XTAI) 16 Mz PANEL Board 1 IC601 & (XOUT) 5.2 Vp-p 0.5 mvp-p 4.7 Vp-p Mz 4 IC101 $ (RFDC) (CD Play mode) 9 IC103! (RFO) (CD Play mode) 12.5 Mz 1.3 Vp-p 1.3 Vp-p SURROUND Board 1 (LC-INB) 5.9 Vp-p 5 IC101 %º (RFAC) (CD Play mode) 1.3 Vp-p 105 ns 75

18 IC Block Diagrams BD Board IC101 CXD3008Q DVDD2 ASYE MD2 DOUT LRCK PCMD BCK EMP XTSL DVSS2 XTAI XTAO DIGITAL OUT D/A DIGITAL INTERFACE 32K RAM OSC ERROR CORRECTOR EFM DEMODULATOR SE TE TES1 TEST1 DVSS1 FRDR SOUT SOCK XOLT SUBCODE PROCESSOR SERVO INTERFACE DVDD1 FSTO SSTP SERVO AUTO SEQUENCER DIGITAL CLV PROCESSOR MDP LOCK PWMI SQSO SQCK SCSY SBSO EXCK CPU INTERFACE MIRR, DFCT, FOK DETECTOR FOK DFCT DVDD0 XRST MUTE DATA XLAT CLOK SENS SCLK ATSK WFCK XUGF XPCK GFS C2PO SCOR C4M WDCK DVSS0 COUT MIRR VPCO V16M TL BIAS AVDD1 PCO FILI FILO CLTV AVSS1 RFAC ASYI ASYO AVDD0 IGEN AVSS0 ADIO RFDC CE TE CLOCK GENERATOR DIGITAL PLL ASYMMETRY CORRECTOR FOCUS SERVO DSP TRACKING SERVO DSP SLED SERVO DSP A/D CONVERTER OPERATIONAL AMPLIFIER & ANALOG SWITC FOCUS PWM GENERATOR TRACKING PWM GENERATOR SLED PWM GENERATOR FFDR 32 TRDR 31 TFDR 30 SRDR 29 SFDR

19 IC103 CXA2568M-T6 OLD 1 VEE APC PD AMP C APC LD AMP C C LC/PD LD ON AGC VT 2 VEE 50µA OLD SW AGC CONT LD PD 3 4 C 19 RF BOT A 5 B C 6 7 VEE RF SUMMING AMP RF EQ AMP RFTC RF I RF O D 8 15 RFE FOCUS ERROR AMP VEE 9 F 10 VEE 14 FE 13 TE E 11 TRACKING ERROR AMP 12 BUFFER VEE C MOTOR (TURN) Board IC701 M54641L MOTOR (SLIDE) Board IC801 BA6286N C OUT2 IN INPUT AMP. REG CONTROL POWER AMP. 8 C GND RIN VREF OUT2 RNF GND TSD POWER SAVE CONTROL LOGIC GND 4 INPUT AMP. POWER AMP OUT1 IN2 REFERENCE OUT1 7 VM 8 C 9 FIN 10 77

20 VIDEO Board IC509 PCM1727E-2/T2 384fs XT1 1 CLOCK MANAGER DUAL PLL 24 XT2 PGND P NCKO RSV SCKO3 ML MC MC RSTB MODE CONTROL POWER SUPPLY 8 TIME OVER SAMPLING DIGITAL FILTER FUNCTION CONTROL AUDIO DATA INPUT INTERFACE OPEN 23 DGND 22 VDD 21 SCKO1 20 SCKO2 19 LRCK 18 DATA 17 BCK 16 ZERO 15 CAP 14 VOUTL BPZ CONTROL MULTI LEVEL Σ MODULATOR MULTI LEVEL Σ MODULATOR 5 LEVEL DAC 5 LEVEL DAC VOUTR 11 CR LPF OUTPUT AMP CR LPF OUTPUT AMP AGND A SURROUND Board IC1201 LV1150 ADM OSC ADM-CONT S-RAM LDELAY LR LR LOW-PASS FILTER VIRTUAL VSS SW1 SW2 LPF1 LPF2 LS-CUT R-PS-IN C L-PS-IN RS-OUT L-IN R-IN LC-INE LC-INB VDD A/D NS D/A DC-CUT AGND VREF EF-VOL L-OUT R-OUT RDELAY

21 AUDIO Board IC602 µpc1330a INVERTER COMPARATER SW R1 GND SW P1 CONT GND C SW P2 GND SW R2 PANEL Board IC603 BA3830F IC604 NJU3716M-T2 R02 1 REFERENCE CURRENT RESET 18 RESET VDD P6 P5 P4 P3 P2 VSS P1 CLR STB CLK DATA R01 LINE NF LINE IN REFERENCE CURRENT BAND PASS FILTER DET F01 F02 F03 F04 F05 F06 CONTROL CIRCUIT SIFT REGISTER REC NF 5 LATC CIRCUIT REC IN REC LEVEL C OUTPUT CIRCUIT RESET C 7 BIAS C 8 GND P7 P8 P9 P10 P11 VSS P12 P13 P14 P15 P16 SO IC711 M65850FP OSCILLATOR D/A LPF2 1/2 C AUTO RESET CLOCK DO1 MO MAIN RESET CONTROL MI D1 DO0 20KBIT SRAM LPF1 A/D LPF1IN LPF1OUT OP1OUT OP1IN CC1 CC2 GND C CLOCK REF OP2IN OP2OUT LPF2IN LPF2OUT 79

Tape deck Section SPECIFICATIONS

Tape deck Section SPECIFICATIONS SERVICE MANUAL Chinese Model HCD-VX550 is the Amplifier, Video CD player, Tape Deck and Tuner section in MHC-VX550. Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.