Service Manual

Transcript

CFD-V37 SERVICE MANUAL E Model Ver 1.0 1999 . 04 Model Name Using CD Section Similar Mechanism Tape Section CFD-V34 Optical Pick-up Type KSM-213CDM Tape Transport Mechanism Type MF-V10-117 SPECIFICATIONS CD player section System Laser diode properties Spindle speed Number of channels Frequency response Wow and flutter Radio section Frequency range IF Aerials Compact disc digital audio system Material: GaAlAs Wavelength:780 nm Emission duration : Continuous Laser output : Less than 44.6 µW (This output is the value measured at a distance of about 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture.) 200 r/min (rpm) to 500 r/min (rpm) (CLV) 2 20 – 20,000 Hz + 1/-2 dB Below measurable limit FM : 87.6 – 107 MHz(E4,EA) 87.6 – 108 MHz(E92) AM : 530 – 1,605 MHz(E4,EA) 530 – 1,710 MHz(E92) FM : 10.7MHz AM : 455kHz FM : Telescopic aerial AM : Built-in ferrite bar aerial Cassette-corder section Recording system 4 -track 2 channel stereo Fast winding time Approx. 120 s (sec.) with Sony cassette C-60 Frequency response TYPE1 (normal) : 70 – 10,000 Hz General Speakers Outputs Power output Power requirements Full range : 10 cm dia., 3.2 Ω, cone type (2) Headphones jack (stereo minijack) For 16 – 64 Ω impedance headphones 2.5 W + 2.5 W (at 3.2 Ω, 10 % harmonic distortion) For CD radio cassette-corder : 110 – 120 V, 220 – 240 V AC Selectable, 50/60 Hz(E4,EA) 120V 60 Hz(E92) 9V DC, 6 size D (R 20) batteries For memory controller : 3V DC, 2 size AA (R 6) batteries — Continued on next page — CD RADIO CASSETTE-CORDER MICROFILM CFD-V37 E92 MODEL SCHEMATIC DIAGRAM — TUNER/SYSTEM SECTION — • Refer to page 34 for IC Block Diagrams. E4,EA MODEL:4.7p E92 MODEL:3.3K L2, CT1(2/4) FM FREQUENCY COVERAGE L1,CT1(1/4) FM TRACKING E92 MODEL L4,CT1(4/4) FM FREQUENCY COVERAGE 27p C1 47p E4,EA MODEL E92 MODEL 5-5. 220 L3,CT1(3/4) AM TRACKING AM • Waveform 1 IC501 #¡ SWITCH 1.0V/div 0.1µsec/div Mark: Ref.No. E4 MODEL E92 MODEL EA MODEL C7 5.6p 5.6p 6.8p C8 3.3p 1.5p 3.3p C18,19 0.01 0.015 0.01 R5 330 470 330 4.0MHz 2 IC501 &¢ 28 500kHz 470 32 — 24 — 1.0V/div 1.0µsec/div 4.5Vp-p Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and 1/4 W or less unless otherwise specified. • C : panel designation. • U : B+ Line. • Power voltage is dc 9 V and fed with regulated dc power supply from battery terminal. • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : CD PLAY ( ) : FM [ ] : AM • Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances. • Waveforms are taken with a oscilloscope. • Signal path. F : FM f : AM • Abbreviation E4 : 220V – 240V AC area EA : Saudi Arabia E92 : 120V AV area 28 — 23 — 4.0Vp-p — 25 — — 26 — CFD-V37 5-6. SCHEMATIC DIAGRAM — POWER SECTION — 23 • Waveform 3 T301 REC 52.75kHz 10V/div 10µsec/div 40Vp-p 32 23 Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and 1/4 W or less unless otherwise specified. E4,EA MODEL E92 MODEL Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. POWER TRANSFORMER E92 MODEL • U : B+ Line. • Power voltage is dc 9 V and fed with regulated dc power supply from battery terminal. • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : CD PLAY ( ) : TAPE PLAY [ ] : TAPE REC • Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances. • Waveforms are taken with a oscilloscope. • Signal path. F : FM E : PB a : REC J : CD E4,EA MODEL — 27 — — 28 — E4,EA MODEL — 29 — F902 2.5A:E4,EA MODEL 3.15A:E92 MODEL 250V — 30 — CFD-V37 IC BLOCK DIAGRAMS REG FM RF AM RF IN FM RF IN FM GND FM/AM FE OUT 28 27 26 25 24 23 22 21 20 19 18 17 16 FM OSC 29 AFC MPX REG 30 AM OSC PLL LPF2 CXA12138S GND IC1 FM DISCRI MUTE 5-8. • Refer to page 34 for IC Block Diagrams. VCO SCHEMATIC DIAGRAM — CD SECTION — FM FRONT-END AM FRONT-END REG FM IF/ DISCRI MPX REG. 1/2 COUNTER 1/2 COUNTER MONO/ST SELECT AM IF/DET PD1 PD2 MUTING CC1 CC2 FOK AM IF IN BAND SELECT FM IF IN TUNE IND CB GND 13 14 15 CP 12 RF_I AGC AFC1 11 RF_O 37 10 RF_M 38 9 RFTC PD 39 8 LD PD1 CXA1992BR 7 VCC 6 RIPPLE FILTER 5 L CH OUT PILOT DET LPF2 ST IND/ VCO CHECK 4 R CH OUT PILOT DET LPF2 PLL LPF1 3 PD2 IC701 2 BAND PASS MUTE RIPPLE FILTER DECODER AMP 1 TUNING INDICATOR AUTOBLEND AGC AFC2 VCO 36 35 34 33 32 31 30 29 28 27 VEE + – – + – + PD1 IV AMP – + PD2 IV AMP – + PD – + RF SUMMING AMP LD – + APC – + LASER POWER CONTROL F IV AMP VCC VCC – + E IV AMP IFB6 Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and 1/4 W or less unless otherwise specified. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. E-F BALANCE WINDOW COMP. FOH FOL TGH TGL BALH BALL ATSC TZC FZC TEI 47 – + ATSC 48 – + TZC 49 TTL ↓ IIL 20 CLK 19 LOCK DFCTO – + DFCT IFB1-6 BAL1-4 TOG1-4 FS1-4 TG1-2 TM1-7 PS1-4 FOCUS PHASE COMPENSATION TM7 FS1 TM5 TM3 + – VEE DFCT VEE FS2 – + — 33 — 15 SL_M VCC VEE VCC TM6 + – — 32 — TM4 – + — 31 — Charge up FZC COMP. FSET TG2 FS4 2 3 4 5 6 7 8 9 10 11 12 13 FEI FDFCT FGD FLB FE_O FE_M SRCH TGU TG2 FSET TA_M TA_O VEE 1 FEO 24 TG1 VCC 16 SL_O TRACKING PHASE COMPENSATION + – 28 VCC FZC 52 17 ISET ISET TM1 TDFCT 50 VC 51 18 VCC VCC VCC • U : B+ Line. • Power voltage is dc 9 V and fed with regulated dc power supply from battery terminal. • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : CD PLAY • Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances. • Waveforms are taken with a oscilloscope. • Circled numbers refer to waveforms. • Signal path. J : CD 21 XLT IIL DATA REGISTER INPUT SHIFT REGISTER ADDRESS DECODER SENS SELECTOR OUTPUT DECODER ATSC WINDOW COMP. TZC COMP. MIRR + – TGFL + – LPC LPFI 46 + – LDON 1.2 ± 0.2Vp-p IIL ↓ TTL MIRR FOK TRK. GAIN WINDOW COMP. LPCL IFB5 IFB4 IFB3 – + + – VCC + – + – 22 DATA FO. BIAS WINDOW COMP. + – 23 XRST + – TOG4 VEE TEO 45 DFCT VEE LEVEL S VEE + – TOG3 + – – + TOG2 IFB2 IFB1 TGFL BAL3 BAL4 BAL1 BAL2 VEE TOG1 VEE 44 + – 0.2V/div 0.5µsec/div VEE + – – + EI 43 + – 5 IC703 #∞ 3.5Vp-p 24 C. OUT – + FE AMP CC1 VCC – + 25 SENS1 – + – + – + E 42 16.9344MHz IIL ↓ TTL VEE F 41 DFCT1 1.0V/div 50nsec/div + – VCC 4 IC703 &¡ 26 SENS2 + – FE_BIAS 40 • Waveform – + 5-7. — 34 — 14 SL_P TM2