PMC-DR50L/DR70L

SERVICE MANUAL

Ver 1.0 1999.09

AEP Model UK Model E Model

Tourist Model

PMC-DR50L

Photo : PMC-DR70L

TAPE Section CD Section
Model Name Using Similar Mechanism Tape Transport Mechanism Type Model Name Using Similar Mechanism MD Mechanism Type Optical Pick-up Type
NEW MF-PMCDR50 NEW KSM-213CCP KSS-213C

SPECIFICATIONS

Continued on page 2
PERSONAL COMPONENT SYSTEM

MICROFILM

5-5. SCHEMATIC DIAGRAM MAIN SECTION (1/3)
Refer to page 74 for IC Block Diagram.

r Waveforms

MAIN SECTION (1/3)

1.5Vp-p

VOLT/DIV : 0.5 V AC TIME/DIV : 5 msec

556mVp-p

4.332MHz
VOLT/DIV : 0.2 V AC TIME/DIV : 50 nsec
Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. : internal component. U : B+ Line. H : adjustment for repair. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM ( ) : MW < > : LW Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms. Signal path. F : FM f : MW L : LW
5-6. SCHEMATIC DIAGRAM MAIN SECTION (2/3)
Refer to page 74 for IC Block Diagrams.
Refer to page 45 for Waveforms.
Refer to page 45 for Notes.
5-7. SCHEMATIC DIAGRAM MAIN SECTION (3/3)

MAIN SECTION (2/3)

60Vp-p
ATT : 1/10 VOLT/DIV : 1V AC TIME/DIV : 5 sec

15Vp-p

Q301 C
VOLT/DIV : 5 V AC TIME/DIV : 5 sec
Note on Schematic Diagram Main Section (2/3) : Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. U : B+ Line. H : adjustment for repair. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : COMMON (REC) ( ) : PLAY Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms. Signal path. F : FM E : PB a : REC J : CD
Note on Schematic Diagram Main Section (3/3) : Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. U : B+ Line. Voltages are dc with respect to ground under no-signal (detuned) conditions. no mark : FM Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Signal path. F : FM c : digital out

5-9. SCHEMATIC DIAGRAM CD SECTION
Refer to page 75 -76 for IC Block Diagrams.
Refer to page 55 for Waveforms.
Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in 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. U : B+ Line. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : CD STOP ( ) : CD PLAY Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms. Signal path. J : CD c : digital out
5-10. SCHEMATIC DIAGRAM CONTOROL SECTION

(CD SECTION)

Waveforms CONTROL SECTION

(PLAY MODE)

1.0 1.5Vp-p

4.8Vp-p

32.768kHz

IC701 # (RFO)

VOLT/DIV : 0.5 V AC TIME/DIV : 1 sec

IC801 $

VOLT/DIV : 1V AC TIME/DIV : 10 sec

2.5Vp-p

0.6Vp-p

IC(FEO)

VOLT/DIV : 1 V AC TIME/DIV : 1 msec
VOLT/DIV : 0.5V AC TIME/DIV : 50 nsec

0.7Vp-p

IC701 $ (TO)
VOLT/DIV : 20mV AC TIME/DIV : 1 msec

875mVp-p

0.1162MHz 8.6 sec

IC751 @ (PCO)

VOLT/DIV : 0.5 V AC TIME/DIV : 5 sec

4.7Vp-p

22.85 sec

IC751 #, $ (LRCK)

VOLT/DIV : 1 V AC TIME/DIV : 5 sec

271mVp-p

16.9344MHz

IC751 & (XTAO)

VOLT/DIV : 0.1V AC TIME/DIV : 20 nsec
Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. U : B+ Line. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : RADIO (COMMON) ( ) : CD < > : REC [ ] : PLAY Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms.
5-13. SCHEMATIC DIAGRAM AMP SECTION
Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. 2 : nonflammable resistor. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. U : B+ Line. Voltages are dc with respect to ground under no-signal (detuned) conditions. no mark : FM Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Signal path. F : FM

5-15. SCHEMATIC DIAGRAM WOOFER AMP SECTION (DR70L ONLY)
Refer to page 76 for IC Block Diagram.
Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. U : B+ Line. Voltages are dc with respect to ground under no-signal (detuned) conditions. no mark : FM Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Signal path. F : FM

PCMDI 42

MIC I/EX

SENSE TIMING PULSE WIDTH

22 10k

19 LOGIC

16 10k
VCC OUT NOISE FILTER MUTING GND NFB IN

IC305 BA338

IC701 CXA1992BR

37 VEE 36

6k 10k

MONITOR AMP 7dB

MONITOR AMP 6k 7dB 10k

3 PRE AMP

PD2 IV AMP F. BIAS 40

COMPARATOR

PD1 IV AMP VCC
RF SUMMING AMP 26 APC VEE IIL TTL 24 SENS1 SENS2
VDD 61 SYSM 62 PWM SERIAL-IN INTERFACE 40 LRCKI 39 LRCK 38 ASYO 37 ASYI

S B+ TAPE Q R F.F.

AVSS 63 LASER POWER CONTROL OVER SAMPLING DIGITAL FILTER AVDD 64 EFM DEMODULATOR ASYMMETRY CORRECTOR

10k 10k

TAPE BUF AMP A1 10k

BUF AMP B1

BUF AMP B2
F IV AMP VCC E IV AMP IFB2 IFB3 IFB4

VCC VCC

BUF AMP A2 10k 10k 10k MUTE

MIC AMP1 COMPARATOR

FE AMP

C. OUT

EXCK SBSO SCOR

DOUT C4M XTSL C2PO

IC Block Diagrams MAIN SECTION (2/3) IC301 TA2068N
IC Block Diagrams CD SECTION

IC751 CXD2589Q

36 BIAS 35 RF
VEE IFB5 IFB1 IFB6 DFCT VEE LEVEL S VEE VEE FO. BIAS WINDOW COMP. TRK. GAIN WINDOW COMP. E-F BALANCE WINDOW COMP. FOH FOL TGH TGL BALH BALL ATSC TZC FZC FOK 22 VCC MIRR IIL TTL DATA 23 XRST AOUT1 AIN1 LOUT1 AVSS XVDD XTAI 3rd-ORDER NOISE SHAPER

NAB AMP1

26dB REC AMP1 DET

26dB REC AMP2 2.1

NAB AMP2 10k

BAL2 BAL3 BAL4

VEE TOG1 TOG2 TOG3 TOG4 GND 44

34 AVDD

33 CLTV TIMING LOGIC SUB CODE PROCESSOR PWM ERROR CORRECTOR 16K RAM DIGITAL PLL 32 AVSS 31 FILI 30 FILO

REF AMP

TTL IIL CC1

MIC NF

LPFI 46

XTAO 71

IIL DATA REGISTER, INPUT SHIFT REGISTER, ADDRESS DECODER, SENS SELECTOR, OUTPUT DECODER VCC
XVSS 72 DIGITAL OUT D/A INTERFACE

29 PCO

ATSC 48
VCC AVSS 73 OSC 28 VCTL 27 V16M

IC302 BH3854AFS

FILTER LATCH DVN2 BVO2 DATA OUT2 TVO2 VREF BIN2 TIN2 CLK NF2 IN2 VC BC TC TZC 49
ATSC WINDOW COMP. DFCT TM1 TRACKING PHASE COMPENSATION

27 TONE

17 TDFCT 50

TZC COMP.

DFCTO IFB1-6 FS1-4 BAL1-4 TOG1-4

TG1-2 TM1-7 PS1-4

ISET LOUTAINAOUTAVDD 77 CLOCK GENERATOR 26 VCKI 25 VPCO 24 TESTEST
VCC VCC VR MATRIX SURROUND VR FZC 52 TONE DFCT 1 AGND 2 INNFBVNBINBVOTINTVOOUTVCC 11 SC 12 PORTPORTPORTPORTDGND FZC COMP. FS4 VEE 1 FEO 2 FEI 3 FDFCT 4 FGD 5 FLB 6 FE_O 7 FE8 SRCH 9 TGU 10 TGFSET 12 TEFS2 Charge up FSET TG2 CONTROL VC 51 VCC VEE FOCUS PHASE COMPENSATION VCC FS1 TG1 TM4

VCC 16 SLO

15 TM7 TM3 VEE VEE TMTM2

AVSS 78 XRST 79

CPU INTERLACE SERVO AUTO SEQUENCER
22 PWMI DIGITAL CLV 21 MDP

SL+ VDD 80

LMUTE RMUTE

4 SQCK

5 SQSO

6 SENS

7 DATA

8 XLAT

9 CLOK

10 SEIN

11 CNIN

12 DATO

13 XLTO

14 CLKO

15 SPOA

16 SPOB

17 XLON

18 FOK

19 VDD

20 VSS

13 TEO

IC651 TA8409S

IC702 BA6898FP

VREFI SPIN GND VCC VCC

IC Block Diagrams WOOFER AMP SECTION

22 VCC

21 VCC

STANDBY BLOCK

VREF BLOCK

IC601 TDA2052

LEVEL SHIFT
T. S. D. REGULATOR, BIAS, T. S. D. MONITOR LEVEL SHIFT D 1

DRIVER MUTE

MUTE/ ST-BY 2

MUTE/ STANDBY

VEE IN1+ IN IN2+

LEVEL SHIFT D 3

HEAT CUT OFF BLOCK
SPO 1 INVCC 3 OUTNC 5 GND 6 VS 7 OUTVREF 9 IN1