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VERSION VARIATIONS Type /Versions: MCM277 Service policy Board in used: MAIN BOARD CD/MCU BOARD HEADPHONE JACK BOARD DISPLAY BOARD AC POWER BOARD KEY BOARD TUNER BOARD Type /Versions: MCM277 Features Feature diffrence in used: Line Out Video Out Surround Out...
SPECIFICATIONS GENERAL: Mains voltage : 127/240V -15%+10% Switchable for /98 Dynamic Bass Boost (DBB) : ON / OFF 120V ± 10% for /37 Input sensitivity 230V ± 10% for /05/12 Aux in (at 1kHz) : 500mV at 600 Ω Mains frequency : 50/60Hz USB : Host Clock accuracy...
MEASUREMENT SETUP Tuner FM Bandpass LF Voltmeter 250Hz-15kHz e.g. PM2534 e.g. 7122 707 48001 RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Tuner AM (MW,LW ) Bandpass LF Voltmeter...
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SERVICE AIDS WARNING All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wrist wrap with resistance. Keep components and tools also at this potential.
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INSTRUCTIONS ON CD PLAYABILITY Customer complaint "CD related problem" Set remains closed! check playability playability ok ? For flap loaders (= access to CD drive possible) "fast" lens cleaning cleaning method is recommended check playability playability ok ? Play a CD for at least 10 minutes check playability playability...
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INSTRUCTIONS ON CD PLAYABILITY PLAYABILITY CHECK LIQUID LENS CLEANING Before touching the lens it is advised to clean the surface of the lens by blowing clean air over it. For sets which are compatible with CD-RW discs This to avoid that little particles make scratches on use CD-RW Printed Audio Disc ....7104 099 96611 the lens.
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DISMANTLING INSTRUCTIONS Dismantling the Rear Portion and PCBs Dismantling the Rear Portion and PCBs 1) Press the 2 juts and pull out the Stand as shown in figure 5) Loosen 2 screws E to remove the Bracket Jack Board as shown in Figure 4.
Dismantling of the CD Module & CD Door Carrier Service pos A 1) Loosen 5 screws J mounting the Key Board to the Front Cabinet to remove the Key Board as shown in figure 8. 2) Loosen 4 screws H and 3 screws G to CD Module as shown in figure 8.
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SERVICE TEST PROGRAM * Door switch is ignored → CD door can be opened. To enter Service Testprogram hold PLAY & Door Open/Close buttons depressed while plugging mainscord in. Display shows the MCU version V refers to Version "MCU-Vyy" yy refers to Software version number of the uProcessor (Main menu) (counting up from 01 to 99) DISPLAY...
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BLOCK DIAGRAM - RDS/RBDS PRE-PROCESSOR SAA6588T BLOCK DIAGRAM MAIN BOARD TABLE OF CONTENTS Internal IC Diagram ..........6-1 to 6-5 Main Board(5757) Layout Top View ........ 6-6 Main Board(5757) Layout Bottom View ......6-7 Circuit Diagram - Main Board(5757) ....... 6-8 Main Board(5762) Layout Top View ........
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PIN DESCRIPTION - RDS/RBDS PRE-PROCESSOR BLOCK DIAGRAM - POWER AMPLIFIER SAA6588T TDA1517 BLOCK DIAGRAM PINNING SYMBOL DESCRIPTION SYMBOL DESCRIPTION PSWN pause s ve LOW) MPTH slav non-inverting mute switch TCON AFIN input 1 OSCO 5 V) 0 V) OSCI output 1 digital g 0 V) multiple...
PIN DESCRIPTION - POWER AMPLIFIER BLOCK DIAGRAM - SELF TUNED RADIO TDA1517 TEA5757 PINNING BLOCK DIAGRAM supply voltage c t i handbook, halfpage INV1 SGND SVRR OUT1 PGND TDA1517 OUT2 M/SS INV2 MLC352 Pin configuration for SOT110-1 and SOT352-1.
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PIN DESCRIPTION - SELF TUNED RADIO PIN DESCRIPTION - SELF TUNED RADIO TEA5757 TEA5757 PINNING t i c l a i t i c l e l l e l l l i l e l l l i supply voltage e l l l l i l i p...
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BLOCK DIAGRAM - SELF TUNED RADIO PIN DESCRIPTION - SELF TUNED RADIO TEA5762 (FOR /12/05) TEA5762 (FOR /12/05) PINNING t i c l e l l l i supply voltage e l l l l i l i p AFC negative output AFC positive output supply voltage for tuning digital supply voltage...
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LAYOUT DIAGRAM - MAIN BOARD (5757) for /37/98 TOP SIDE...
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LAYOUT DIAGRAM - MAIN BOARD (5757) for /37/98 BOTTOM SIDE...
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CIRCUIT DIAGRAM - MAIN BOARD (5757) for /37/98...
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LAYOUT DIAGRAM - MAIN BOARD (5762) for /05/12 TOP SIDE...
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6-10 6-10 LAYOUT DIAGRAM - MAIN BOARD (5762) for /05/12 BOTTOM SIDE...
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6-11 6-11 CIRCUIT DIAGRAM - MAIN BOARD (5762) for /05/12...
CD & MCU BOARD This board isn’t intend to repair. Only for orientation. TABLE OF CONTENTS Main Board Layout Top View ........... 7-2 Main Board Layout Bottom View ........7-3 Circuit Diagram - CD Part ..........7-4 Circuit Diagram - MCU Part ..........7-5 Layout Diagram - SW Board ...........
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LAYOUT DIAGRAM - SW BOARD ELECTRICAL PARTS LIST - CD & MCU BOARD ( FOR CDM _ DAYANG M93 ) TOP SIDE D128 994000004422 SCHOTTKY, PMEG2010 D165 994000004422 SCHOTTKY, PMEG2010 D302 996510000271 DIODE RLS4148 LL-34 D303 994000004285 ZENER DIODE UDZS6.8B UMD2 D304 994000004285 ZENER DIODE UDZS6.8B UMD2...
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IC BLOCK DIAGRAM - LCD DRIVER HT1622 Block Diagram AC POWER & DISPLAY & KEY BOARD PIN DESCRIPTION - LCD DRIVER HT1622 Pad Description TABLE OF CONTENTS Chip selection input with Pull-high resistor. When the CS is logic high, the data and command read from or written to the HT1622 Internal IC Diagram ............
LAYOUT DIAGRAM - AC SOCKET BOARD LAYOUT DIAGRAM - RC BOARD TOP SIDE TOP SIDE LAYOUT DIAGRAM - AC SOCKET BOARD LAYOUT DIAGRAM - RC BOARD BOTTOM SIDE BOTTOM SIDE LAYOUT DIAGRAM - DOOR MOTOR BOARD LAYOUT DIAGRAM - DOOR MOTOR BOARD TOP SIDE BOTTOM SIDE CIRCUIT DIAGRAM - RC BOARD...
ELECTRICAL PARTS LIST CF401 994000004236 FM CERAMIC FILTER 10M7 IC402 994000004234 VAR. CAP DIODE HN-1V02H CF402 994000004236 FM CERAMIC FILTER 10M7 IC501 996510006486 IC MN101CF91D MCU TQFP048 D100 996510010718 DIODE BZX79-C4V3 IC504 994000005674 IC BR24L02F-WE2 D128 994000004422 SCHOTTKY, PMEG2010 EA IC601 996500041701 IC TDA7468D SOUND SO28...
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10-1 10-1 SOFTWARE VERSION CHECKING How to check Software Version on set Front Panel Check software version: (1)Plug in the set; (2)Hold "PROGRAM" and "DBB" buttons together when set on "ECO Power" mode (LED light is on); (3)The LCD will display the software version as " Mxxx xxx" To clear all program station of tuner mode: (1)Plug in the set;...
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FMANT 996510000308 FM ANT WIRE 75R L1.0M MAIN PCB ASSY 996510028568 REMOTE CONTROL SPKBOX 996510019466 SPK BOX FOR MCM277/12 IN PAIR AUDIO PROCESSOR PORTION CD/USB PCB ASSY (ONLY FOR REFERENCE) AMANT 996510026334 AM ANT ASSEMBLY OF MCM277 AD02 996510026339 DIODE MMBD4148W...
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15 - 3 15 - 3 (FOR ALI SOLUTION) ELECTRICAL PARTS LIST ELECTRICAL PARTS LIST ELECTRICAL PARTS LIST Loc. 12NC Description Loc. 12NC Description Loc. 12NC Description MAIN PCB ASSY MAIN PCB ASSY KEY PCB ASSY KEY PCB ASSY AC POWER ASSY AC POWER ASSY F602 996510026357...
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16-1 REVISION LIST 1.0 Manual 3141 785 32370 Initial Service Manual released. 1.1 Manual 3141 785 32371 In this version, version /05 added. 1) P9-1 Mechanical and Accessories Partslist updated. 1.2 Manual 3141 785 32372 In this version, version /98 added. 1) P9-2 Mechanical and Accessories Partslist updated.