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Sanyo MCD-Z250F Service Manual
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Sanyo MCD-Z250F Service Manual

Sanyo MCD-Z250F Service Manual

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Service Manual
Specifications
(Cassette Section)
Recording system ........................ AC bias, 4 track stereo
Erasing system.. ........................... Magnet erase
Tape speed ................................. .4.8 cm I sec.
Fast forward and rewind time.. ....
Frequency response ................... .60 - 14,000 Hz (Normal tape)
Section)
(CD
Channels ...................................... 2 channels
Wow & Flutter.. ............................. Undetectable
Sampling frequency ..................... 44.1 kHz
Quantization ................................ .16 bit s linear / ch
Pick up light source ...................... Semi-conductor laser
Pick up wave length .................... .790 nm
(Radio Section)
Tuning ranges .............................. FM
Antennas ...................................... Built-in ferrite bar and
All manuals and user guides at all-guides.com
CD Radio Cassette
Recorder
sec. (C-60 tape)
:
87.5 - 108 MHz
AM:522-1,611 kHz
telescoping rod antennas
MCD-Z250F
PRODUCT CODE No.
142 660 10
(General)
Output power . . . . . . . . . . . . . . 2.8 W/ch (DIN music)
Speaker . . . . . . . . . . . . . . . . . . . . . . . 10 cm x 2, 8 ohms
Terminal impedance
PHONES . . . . . . . . . . . . . . . . . 32 ohms
:
Power source . . . . . . . . . . . . . . AC
230 V, 50 Hz
:
DC
12 V (8 "R14/C" batteries)
Tuner memory back-up batteries
DC 6 V, 4 "RGIAA" batteries
Remote control unit
DC 3 V, 2 "RGIAA" batteries
Dimensions . . . . . . . . . . . . . . . . . 412 x 158 x 239 mm (W x H x D)
Weight (approx.) . . . . . . . . . . 2.8 kg (without batteries)
Specifications subject to change without notice.
REFERENCE No. SM580826
FILE NO.
(XE)
:
:

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  • Page 1 All manuals and user guides at all-guides.com FILE NO. MCD-Z250F Service Manual CD Radio Cassette (XE) Recorder Specifications PRODUCT CODE No. 142 660 10 (Cassette Section) (General) Recording system ......AC bias, 4 track stereo Output power ....2.8 W/ch (DIN music) Erasing system..

  • Page 2: Laser Beam Safety Precautions

    All manuals and user guides at all-guides.com LASER B E A M SAFETY PRECAUTIONS Pick-up that emits a laser beam is used in this CD player. CAUTION USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION CAUTION -INVISIBLE LASER RADIATION WHEN OPEN AND EXPOSURE...

  • Page 3: Removal And Installation

    All manuals and user guides at all-guides.com REMOVAL AND INSTALLATION d. CD MECHANISM e. CD P.W.BOARD g. DISPLAY P.W.BOARD f. OPEN I CLOSE P.W.BOARD OPEN/CLOSE P.W.S h. MAIN P.W.BOARD BLOCK...
  • Page 4 All manuals and user guides at all-guides.com REMOVAL AND INSTALLATION i. TUNER P.W.BOARD FRONT ‘C-MECHA (HEAD)-- C-MECHA &MOTOR SPEAKER - TAPE MECHANISM...
  • Page 5 All manuals and user guides at all-guides.com REPLACEMENT OF CD MECHANISM Note that the mechanism of the CD player is very delicate. is very important that the spindle motor (witch rotates the disc), and the sled motor (which cases the disc signals to be tracked), as well as the gear and other components, operate smoothly, without eccentricity.
  • Page 6 All manuals and user guides at all-guides.com REPLACEMENT OF CD MECHANISM c. Replacement and lubrication of the pickup Before replacement of the pickup, be sure to carefully read the section regarding the pickup when the unit is moved or transported. Remove a pickup rail (CM2) with a driver from the bottom of chassis.
  • Page 7 All manuals and user guides at all-guides.com REPLACEMENT OF CD MECHANISM f. Resetting the pickup to the home position (1) The limit switch is switched ON by the projection of this rack gear secured to the returned pickup, after which the sled motor continues to operate (by the circuit) for approximately 30 msec.

  • Page 8: Tuner Adjustments

    All manuals and user guides at all-guides.com TUNER ADJUSTMENTS Use a plastic screw driver for adjustments. Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter. Supply voltage DC 12.OV Phones impedance 32 ohms Function switch RADIO a.

  • Page 9: Tape Adjustments

    All manuals and user guides at all-guides.com TAPE ADJUSTMENTS a. Adjusting Azimuth Be sure to clean the heads before attempting to make any adjustment. Be sure both channel’s waveform are the same for the phase matching. Be sure both channels (1 and 2) are the same level using a dual-channel oscilloscope. After completion of the adjustment, apply the threadlock (TB-1401 B) to the azimuth adjustment screws to fix them securely.
  • Page 10 All manuals and user guides at all-guides.com...

  • Page 11: Parts List

    All manuals and user guides at all-guides.com PARTS LIST PRODUCT SAFETY NOTICE EACH PRECAUTION IN THIS MANUAL SHOULD BE FOLLOWED DURING SERVICING. COMPONENTS IDENTIFIED WITH THE IEC SYMBOL A IN THE PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATED COMPONENTS IN WHICH SAFETY CAN BEOF SPECIAL SIGNIFICANCE.
  • Page 12 All manuals and user guides at all-guides.com PARTS LIST REF.NO. P A R T N O . DESCRIPTION P A R T N O . DESCRIPTION REF.NO. MT-GLAZE 4.7K JA l/low 4 0 5 0 1 4 4 5 0 9 TR 2SC2412K-R R1472 4 0 1 0 3 8 6 4 0 6 Q1781...
  • Page 13 All manuals and user guides at all-guides.com PARTS LIST PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION REF.NO. IC CXP50712-120Q 4102893508 4093784205 IC TA2068N 4093314501 645 012 0664 A 409295 IC TA8229K 7402 614 035 0494 V.H.F COIL 4092549409 IC S-8705OCF-VP 6142290231 V.H.F COIL 6450014581...
  • Page 14 All manuals and user guides at all-guides.com PARTS LIST TAPEMECHANISM (TM-PRlBTN-SH) PART NO. DESCRIPTION PART NCi DESCRIPTION REF.NO. s4951 645 013 0342 SWITCH,SLIDE 2P-3T,FUNCTION TM01 6450091742 SUPPLY REEL ASSY s4952 645 019 4115 6450091575 BACK TENSION SPRING TM02 VR421 645 019 4092 VR,ROTARY 50KBX2 6450091674 RECORD SAFETY LEVER TM03...
  • Page 15 All manuals and user guides at all-guides.com EXPLODED VIEW (TAPE MECHANISM) $ - T M 3 1 & T M 3 2 TM33 TM54...

  • Page 16: Exploded View (Cd Mechanism)

    All manuals and user guides at all-guides.com EXPLODED VIEW (CD MECHANISM) PARTS LIST CD MECHANISM (CD94C12-SH) DESCRIPTION REF.NO. PART NO. PART rj0. REF.NO. 6142377109 6142791912 6142377116 6142622575 645 006 7983 614 263 7739 6450188879 411 044 7502 SCR PAN+SW 2X5,SPINDLE MOTOR 6142622599 SPECIAL WASHER, CM1-4...

  • Page 17: Ic Block Diagram & Description

    All manuals and user guides at all-guides.com FIN2 + FIN1 = RF, FIN2 - FIN1 = FE ut Pin for Track Error Sense Signal to Digital Constant Linear Vel It Control Level of Data-Slice by Digital Signal ut Pin of Data for Command from Micro 0 Output Pin of APC (Automatic Power Control) Circuit.
  • Page 18 All manuals and user guides at all-guides.com ICI 02 LC78822ED (Digital Signal Processor) Name Name Function No. 1 Pin Function of defect TEST3 I ITest pin. signal I Input terminal for test. 0 The phase comparison output terminal for external VC0 control. R V S S RCHO I 0 loutput terminal for R-ch RVDD...
  • Page 19 All manuals and user guides at all-guides.com IC221 LC72131MD (PLL Frequency Synthesizer) IC412 TA8229K (AF Amplifier) “CC B.S. I IN- I IC413 S-8705OCF-VP (Voltage Regulator)
  • Page 20 All manuals and user guides at all-guides.com (Micro Processor) Function Pin Name VO Function I Model select input SELECT I Synchronization recording start signal 42 SYNC-REC 0 Inter Face for DSP (Clock) CQCK I Inter Face for DSP (Command data output) COIN _CD segment signal I Inter Fact...

  • Page 21: Wiring Connection

    All manuals and user guides at all-guides.com WIRING CONNECTION LEFT SPEAKER RIGHT SPEAKER TAPE MECHANISM AMP 8. SYSCON P.W.B CD MECHANISM PICK-I BATTERY TERMINAL 1 P.W.B...

  • Page 22: Schematic Diagram (Tuner)

    All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM (TUNER)

  • Page 23: Wiring Diagram (Tuner)

    All manuals and user guides at all-guides.com WIRING DIAGRAM (TUNER) TUNER P.W.B...
  • Page 24 All manuals and user guides at all-guides.com WIRING DIAGRAM (CD)
  • Page 25 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM (CD) MECHANISM P M - D A D - 9 4 C l This is a basic schematic diagram.
  • Page 26 All manuals and user guides at all-guides.com C N 1 0 3...
  • Page 27 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM (AMPLIFIER) PRODUCT SAFETY NOTICE Each precaution in this manual should bs followed during servicing. Components identified with list and the schematic diagram designated components in which safety can be of special sii component identified by use only the replacement pans designated, or parts with the same or voltage that are designated in the parts list in this manual.
  • Page 28 All manuals and user guides at all-guides.com BEAT CANCEL he IEC symbol in the parts ratings of resistance, wattage asurements must be made to...
  • Page 29 All manuals and user guides at all-guides.com WIRING DIAGRAM (AMPLIFIER & SYSCON) BATTERY TERMINAL - 2 P.W.B 28 -...

  • Page 30: Power Supply P.w.b

    All manuals and user guides at all-guides.com AMPLIFIER & SYSCON P.W.B AC SOCKET P.W.B OPEN / CLOSE R/P SWITCH P.W.B SWITCH P.W.B POWER SUPPLY P.W.B...
  • Page 31 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM (SYSCON)
  • Page 32 All manuals and user guides at all-guides.com...

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