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Service Manual

FILE NO.

REFERENCE No.

5810217

PRODUCT CODE No.
164 074 00 CWM-460/US
164 074 05 CWM-460/MX
164 074 01 MCD-S925/CA
164 074 02 MCD-S925F/XE
164 074 03 MCD-S925F/AU
164 074 04 MCD-S925F/PA

CD Portable Radio
Cassette Recorder

CWM-460

(US)

(MX)

MCD-S925

(CA)

MCD-S925F

(XE)

(AU)

(PA)

SPECIFICATIONS

(TAPE DECK SECTION)

Recording System ................. AC bias, 4-channel stereo

Erasing System ..................... Magnet erase

Tape speed ........................... 4.75 cm/sec.

Fast forward and

Rewind time .................... Approx. 110 sec. (C-60 tape)

Frequency range .................. 80 - 12,000 Hz (Normal tape)

(CD PLAYER SECTION)

Channels ............................... 2 channels stereo

S/N ratio ................................ 73 dB

Wow & Flutter ........................ Below measurable limits

Sampling frequency .............. 44.1 kHz

Quantization .......................... 16 bits linear/ch

Pickup light source ................ Semi-conductor laser

Pickup wave length ............... 790 nm

Laser output .......................... Continuous wave max. 0.6 mW

(RADIO SECTION)

Tuning range ......................... FM : 87.9 - 107.9 MHz(CA,US,MX)

: 87.5 - 108 MHz(PA,AU,XE)

AM : 520 - 1,710 kHz

(10 kHz step)(PA,CA,MX)

:522 - 1611 kHz

(9 kHz step)(PA,AU,XE)

Antenna ................................. Built-in ferrite bar and telescopic rod

.............................................. antenna

(GENERAL SECTION)

Power output ......................... 3W/ch (DC max)

Speaker ................................. 12 cm x 2. Piezoelectric x 2 (4 ohms)

Terminal impedance ............. PHONES : 32 ohms

Power source ........................ AC : 120V, 60Hz (CA,US,MX)

: 230V, 50Hz (XE)

: 230-240V, 50Hz (AU)

: 110-120/220-240V, 50/60Hz (PA)

DC : 12 V (8 "R20/D" batteries)

Dimensions ........................... 615 (W) x 275 (H) x 253 (D) mm

Weight (approx.) .................... 6 kg (Not including batteries)

Specifications subject to change without notice.

Summary of Contents for CWM-460

Page 1: ...w Flutter Below measurable limits Sampling frequency 44 1 kHz Quantization 16 bits linear ch Pickup light source Semi conductor laser Pickup wave length 790 nm Laser output Continuous wave max 0 6 mW RADIO SECTION Tuning range FM 87 9 107 9 MHz CA US MX 87 5 108 MHz PA AU XE AM 520 1 710 kHz 10 kHz step PA CA MX 522 1611 kHz 9 kHz step PA AU XE Antenna Built in ferrite bar and telescopic rod anten...

Page 2: ...S DECODER PROGRAM COUNTER STACK JUDGE ALU DAC ADC LATCH BUS DRIV LATCH BUS DRIV LATCH BUS DRIV LATCH BUS DRIV LATCH BUS DRIV LATCH BUS DRIV LATCH BUS DRIV MPX INTERRUPT MPX MPX MPX MPX MPX BEEP LCPA B LCDA B SEG PLA LATCH LCD PORT DRIVER 96 4 4 7 SELECTER PHASE DETECTOR UNLOCK F F COMMON DRIVER REFERENCE DIVIDER DIVIDER CAUTION INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED AVOID EXPO...

Page 3: ...utput 50 mW Function switch RADIO a PARTS LOCATION L803 L802 L801 FM ANT T801 T802 IC801 TC801 TC802 AM COIL BAND FM IF STEP 1 SING FRE 10 7MHz ADJUST MENT REMARKS RADIO SETTING BAND MW IF STEP 1 SING FRE 450KHz ADJUST MENT T802 REMARKS ADJUST FOR BEST IF WAVE FORM RADIO SETTING 1 AM IF ADJUSTMENT 2 FM IF ADJUSTMENT AM LOOP ANT FIG 2 FIG 1 300PF IC301 18PIN 0 1U 0 1U 10 5 10 7 10 9 WAVE FORM MHZ 4...

Page 4: ... ANT OUTPUT OUTPUT OSCILLOSCOPE OSCILLOSCOPE AM LOOP ANT 60cm FIG 3 R803 R803 ADJUSTMENT L805 ANT COIL TC801 ADJUST FOR MAXIMUM SENSITIVITY MAXIMUM SENSITIVITY SING FRE 600KHz 1400KHz BAND AM STEP 1 2 3 REPEAT STEP 4 AND 5 SEVERAL TIMES ADJUSTMENT L802 TC802 ADJUST FOR MAXIMUM SENSITIVITY MAXIMUM SENSITIVITY SING FRE 90MHz 106MHz BAND FM STEP 1 2 3 REPEAT STEP 1 AND 2 SEVERAL TIMES AMERICA 4 AM TR...

Page 5: ... 4 Press the STOP button 5 After completion of the adjustment use thread lock TB 1401B to secure the azimuth adjustment screw 3 MOTOR SPEED ADJUSTMENT 1 Insert the test tape TCC 119 etc 3 000 Hz 2 Press the PLAY button 3 Use a flat tip screwdriver to turn the SVR located inside the rear of the motor to adjust SVR so that the frequency counter become 3 000 Hz 4 CHECKING THE MECHANISM TORQUES AND TE...

Page 6: ...FM ROD ANT AC IN M TAPE DECK MECHANISUM CD MECHANISM BATTERY P W B CD SWITCH P W B L CH SPEAKER BOX R CH SPEAKER BOX P T DISPLAY P W B CD MAIN TUNER P W B CASS PRE AMP P W B WHITE YELLOW RED BLACK DC 12V CN3 2P CN9 15P CN4 2P CN5 9P CN6 4P CN7 15P CN8 7P CN502 6P 6P 15P BATTERY CNP2A AC IN SOCKET This is a basic wiring connection ...

Page 7: ...2 Y02 Y02 Y04 Y01 Y06 Y04 Y06 Y08 Y08 Y09 Y08 Y11 Y12 Y13 Y14 Y15 Y09 3 4 23 7 26 25 24 27 30 28 29 31 34 35 51 38 37 39 40 39 40 41 42 52 53 54 52 53 54 71 72 73 74 Y18 Y18 Y18 Y18 Y18 Y19 Y20 Y21 Y21 Y21 Y22 Y22 Y23 Y23 Y23 Y21 Y21 Y21 Y22 Y22 Y23 Y23 Y23 61 75 43 44 58 59 58 60 56 55 ...

Page 8: ... 645 049 7179 INSTRUCTION MANUAL XE 645 049 6363 INSTRUCTION MANUAL CA 645 049 8145 INSTRUCTION MANUAL PA 645 037 8454 AC LINE CORD VDE APP XE 645 037 9468 AC CORD SET VDE APP PA 645 038 2048 AC CORD SET UL APP MX CA US 645 022 1576 AC LINE CORD SET SAA APP AU 645 047 8703 REMOTE CONTROL HANDSET REF NO PART NO DESCRIPTION CABINET CHASSIS REF NO PART NO DESCRIPTION 1 645 049 5953 LID CASS MX US 1 6...

Page 9: ... CNP5 TO MAIN CN5 AU XE PA 645 049 5731 15P F WIRE UL DISPLAY CNP7 TO MAIN CN7 AU XE PA DISPLAY CTL KEY P W BOARD ASSY REF NO PART NO DESCRIPTION 71 614 319 6815 ASSY PWB DISPLAY CTL KEY Only initial AU XE PA 71 614 319 5245 ASSY PWB DISPLAY CTL KEY Only initial MX US CA C0102 403 060 6904 POLYESTER 3300P M 50V C0202 403 060 6904 POLYESTER 3300P M 50V CN011 645 026 8816 2P WAFFR D0101 645 016 9250...

Page 10: ...0101 645 049 7100 FERRITE BEAD CE COILS AU XE L0102 645 049 7100 FERRITE BEAD CE COILS AU XE L0501 645 026 7857 AXIAL INDUCTOR L0502 645 026 7857 AXIAL INDUCTOR CE AU XE L0503 645 026 7857 AXIAL INDUCTOR CE AU XE L0504 645 026 7857 AXIAL INDUCTOR L0505 645 026 7857 AXIAL INDUCTOR L0506 645 026 7857 AXIAL INDUCTOR L0507 645 041 6422 BEAD COIL 25UH COILS NO 846266 L0801 645 020 9338 FM COIL L0802 64...

Page 11: ...NISM SEMI AUTO ZY33F 23S REF NO PART NO DESCRIPTION 43 645 049 6448 CASS MECHANISM SEMI AUTO ZY33 F 23S TM01 645 016 5252 MG ERASE TM02 645 025 2518 R P HEAD TC 951 STEREO TM03 645 048 8740 PINCH ROLLER ARM TM04 645 048 9235 R F BELT TM05 645 049 6592 MAIN BELT TM06 645 049 5571 MOTOR ASSY ...

Page 12: ...odulation VCO Clock Oscillator Clock Control X tal Root Timing Generator RAM Address Generatorl 2KÅ 8bit RAM Billingual Digital Out General Ports Digital Attenuator Quadruple Over Sampling Digital Filter Interpolalation Mute C1 C2 Error Detect Correct Control Flag 1bit DAC L P F CLV Digital Servo Servo Commander FSS 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 41 40 39 38 37 3...

Page 13: ...NC REC Input CHATTERING TIME 40MS Power supply SD Input Display SEGMENT Output VOL IC Control Output Operating KEY Input Destination Input BASS X LID SW Input CHATTERING TIME 40MS BACK UP MODE Control Outpu Power supply Ground Ground Connection terminal of crystal oscillation 4 5MHz NAME CD IDATA CD ODATA CD CLOCK RWC CD RESET Non Connection Non Connection Non Connection Non Connection BASS BOOST ...

Page 14: ...minal for digital signals Generalized I O terminal 1 Generalized I O terminal 2 Generalized I O terminal 3 Generalized I O terminal for command identification Pull down resistor incorporated When used as the same function as LC78622E open circuit or ground H position enables only generalized I O command to be controlled L position enables all the c Controlled by a serial data command from micro co...

Page 15: ...t Input terminal for command from micro computer Input terminal either for clock to take in command input or for clock to take out sub code from SQOUT Schmitt input Output terminal for Q output of sub code Output terminal for synchronizing signals of sub code frame When sub code is stood by falls Input terminal for clock to read out sub code Schmitt input when not used make sure to ground Output t...

Page 16: ... 15 WIRING DIAGRAM BATTERY CD SW CASS PE AMP BATTERY CD SW CASS PRE AMP ...

Page 17: ... 17 16 SCHEMATIC DIAGRAM MAIN for US CA MX This is a basic schematic diagram ...

Page 18: ... 19 18 This is a basic schematic diagram SCHEMATIC DIAGRAM MAIN for AU XE ...

Page 19: ... 21 20 This is a basic schematic diagram SCHEMATIC DIAGRAM MAIN for PA ...

Page 20: ... 23 22 This is a basic schematic diagram SCHEMATIC DIAGRAM CD MAIN ...

Page 21: ... 24 WIRING DIAGRAM CD MAIN TUNER for US CA MX ...

Page 22: ...60 61 62 63 64 Voltage 0 15 2 4 4 3 0 3 0 4 9 0 19 5 2 6 2 6 3 3 3 3 2 3 3 8 0 3 5 IC501 LC78622E V Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Voltage 0 13 0 1 6 0 12 1 67 5 0 44 0 15 2 57 2 6 0 12 0 5 0 1 0 1 0 15 1 9 Pin No 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Voltage 0 11 5 0 12 0 12 2 5 5 5 4 8 0 6 0 12 0 12 4 8 0 11 0 11 0 5 0 12 Pin No 33 34 35 36 37 38 39 40 41 42 43 44 45 46 ...

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