XR-EM70 XR-EM71 K EZ SERVICE MANUAL COMPACT DISC STEREO SYSTEM BASIC TAPE MECHANISM : AZM-1 A4NM BASIC CD MECHANISM : 3ZG-3 E13NM SYSTEM COMPACT DISC XR-EM70 CX-LEM70 XR-EM71 CX-LEM71 SPEAKER REMOTE CONTROLLER SX-LEM70 RC-BAT15 This Service Manual is the Revision Publishing and replaces Simple Manual of XR-EM70 / 71 , (S/M Code No. 09-018-449-6T1). S/M Code No.
TABLE OF CONTENTS SPECIFICATIONS ..............................................................................................................................................................3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ...................................................................... 4 ELECTRICAL MAIN PARTS LIST .............................................................................................................................. 5 ~ 9 TRANSISTOR ILLUSTRATION ..........
SPECIFICATIONS MAIN UNIT CX-LEM70 (K) / CX-LEM71 (EZ) TUNER FM tuning range FM usable sensitivity (IHF) FM antenna terminal MW tuning range MW usable sensitivity LW tuning range LW usable sensitivity MW/LW antenna AMPLIFIER Power output Input Outputs CASSETTE DECK Track format Frequency response Recording system Heads CD PLAYER Laser D/A converter Signal-to-noise ratio Harmonic distortion Wow and flutter 87.5 MHz to 108 MHz 16.
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING CAUTION This set employs laser. Therefore, be sure to follow carefully the instructions below when servicing. Use of controls or adjustments or performance of procedures other than those specified herin may result in hazardous radiation exposure. WARNING!! WHEN SERVICING, DO NOT APPROACH THE LASER EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO CONFIRM LASER BEAM EMISSION.
ELECTRICAL MAIN PARTS LIST REF. NO. PART NO. IC KANRI NO. DESCRIPTION 87-020-454-010 87-A21-831-010 8B-CLX-610-010 87-A20-455-010 87-A22-112-040 IC,DN6851 IC,SPS-422-1-F1 C-IC,LC876564V-5Y22 IC,HA12211 C-IC,BD3861FS 87-017-825-010 87-A20-446-010 87-A21-365-010 87-017-917-080 87-A20-445-010 IC,GP1F32T C-IC,LA9241ML IC,NJM7808FA(A) IC,BU4066BCF IC,BA5936S 87-A21-319-010 87-A21-695-010 87-A20-440-040 87-A21-928-010 C-IC,LC78622NE IC,LA1845L C-IC,BU1920FS IC,LC72131D-N REF. NO.
REF. NO. PART NO. C391 C403 C409 C422 C426 KANRI NO. 87-010-787-080 87-010-759-080 87-012-282-080 87-016-459-080 87-A12-088-080 DESCRIPTION C-CAP,U 0.022-25 KB C-CAP,U, 0.1-25F CAP, U 4700P-50 CAP,E 470-10 M SMG CAP,E 2.2-50 SMG C427 C439 C440 C441 C442 87-A12-088-080 87-A10-304-080 87-A10-304-080 87-A10-307-080 87-A10-307-080 CAP,E CAP,M CAP,M CAP,M CAP,M C443 C444 C451 C452 C460 87-010-785-080 87-010-785-080 87-012-275-080 87-012-275-080 87-A12-087-080 C461 C462 C463 C464 C465 REF. NO.
REF. NO. PART NO. S53 S54 S55 S56 S57 KANRI NO.
REF. NO. PART NO. C110 C111 C112 C113 C114 KANRI NO. 87-010-831-080 87-A12-063-040 87-A10-353-080 87-010-831-080 87-010-831-080 DESCRIPTION C-CAP,U,0.1-16F CAP,E 220-10 SMG C-CAP,U0.22-10KB C-CAP,U,0.1-16F C-CAP,U,0.1-16F CN101 CN102 CN103 FC102 FL101 87-099-720-010 87-A60-077-010 87-099-761-010 88-910-171-110 8B-CLX-611-010 L101 REF. NO. C919 C920 C921 C922 C923 KANRI NO.
REF. NO. PART NO. ! ! ! C251 CN201 PT250 PT251 RY251 KANRI NO. 87-A12-074-080 87-A61-110-010 8B-CLX-615-010 8B-MA6-675-010 87-A91-418-010 DESCRIPTION CAP,E 470-25 SMG CONN,9P V TID-A PT,EZ BCL-30 PT,SUB BMA E (VRK) RELAY,AC12V G5PA-1-M ! ! T250 T251 87-A60-317-010 87-A60-317-010 TERMINAL, 1P MSC TERMINAL, 1P MSC REF. NO. 87-010-831-080 87-012-272-080 87-012-272-080 8B-CLX-626-010 87-A60-420-010 C-CAP,U,0.1-16F C-CAP,U 680P-50 B C-CAP,U 680P-50 B CONN ASSY,5P V W HP JACK,3.
TRANSISTOR ILLUSTRATION E C B E C B B C E 2SA1980G 2SA1981Y 2SC2240(GR/BL) 2SD655E 2SA1296GR CSC4115BC KTC3198GR 2SB1677 2SD2619 D G B C E 2SB1370E C S D S G B E G D S 2SK3053 2SK2158 2SK360E 10 2SA1235F 2SA1514K(S) 2SC2620B 2SC3052F 2SC3906KR 2SC5345SF/S(O) CSD1306E DTA144EKA DTC144EKA KRA102S KRA107S KTC3875GR RT1N141C RT1P441C
WIRING – 1 (MAIN / PHONE / OPTICAL) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 11 –
SCHEMATIC DIAGRAM – 1 (MAIN 1 / 2 / PHONE / OPTICAL / HEAD) – 12 –
SCHEMATIC DIAGRAM – 2 (MAIN 2 / 2 : AMP SECTION) – 13 –
WIRING – 2 (FRONT) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 14 –
WIRING – 3 (FL) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 15 –
SCHEMATIC DIAGRAM – 3 (FRONT / FL / DECK / FRAME / DRIVE) – 16 –
WIRING – 4 (CD / CD – DRIVE / CD – LOAD) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 17 –
SCHEMATIC DIAGRAM – 4 (CD / CD – DRIVE / CD – LOAD) – 18 –
WIRING – 5 (TUNER) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 19 –
SCHEMATIC DIAGRAM – 5 (TUNER) – 20 –
WIRING – 6 (PT) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 21 –
SCHEMATIC DIAGRAM – 6 (PT) – 22 –
WIRING – 7 (DECK / FRAME / DRIVE / HEAD) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 23 –
IC BLOCK DIAGRAM – 24 –
– 25 –
FL (HNA 11MS25) GRID ASSIGNMENT / ANODE CONNECTION GRID ASSIGNMENT ANODE CONNECTION 26
IC DESCRIPTION IC, LC78622NE Description Pin No. Pin Name I/O 1 DEFI I Defect detection signal (DEF) input. ("L" is applied when not used.) 2 TAI I For PLL/Test input. (Connected to 0V) 3 PDO O Phase comparison output to control the external VCO. 4 VVSS Ground of the built-in VCO. Normally 0V. 5 ISET I For the connection of a resistor which adjusts the PDO output current. 6 VVDD Power supply of the built-in VCO. 7 FR I Adjusts the VCO frequency range.
Pin No. Pin Name I/O Description 40 O-RCH O Rch output. 41 RVDD Rch power supply. 42 MUTE-R O Rch muting output. (Not used) 43 XVDD Power supply of crystal oscillator. 44 XOUT O 45 XIN I 46 XVSS Ground of crystal oscillator. Normally 0V. 47 SBSY O Subcode block sync signal output. (Not used) 48 EFLG O C1, C2, single, duplex correction monitor. (Not used) 49 PW O Output of subcodes P, Q, R, S, T, U and W.
IC, LA9241ML Description Pin No. Pin Name I/O 1 FIN2 I 2 FIN1 I 3 E I 4 F I For the connection of the pickup photodiode. 5 TB I Inputs the DC components in the TE signal. 6 TE I 7 TE O TE signal output. 8 TESI I TES (track error sense) comparator input. The TE signal is passed through a BPF. 9 SCI I Shock detection input. 10 TH I Sets the time constant for the tracking gain. 11 TA O TA amp output.
Pin No. Pin Name I/O 38 SLOF I Sled servo off control input. Description 39 CV 40 CV+ I CLV error signal input from the DSP. 41 RFSM O RF output. 42 RFS O Sets the RF gain and the EFM signal's 3T compensation constant together with the RFSM pin. 43 SLC O 44 SLI I Input to control the DSP's data slice level. 45 D-GND Ground of digital signals. 46 FSC O Output for the focus search smoothing capacitor.
IC, LC876564V-5Y22 Pin No. Pin Name I/O Description 1 O-COIN O CD IC control data output. 2 O-CDCONT O CD block power ON / OFF control output. 3 O-OPEN (CD) O CD tray open data output. 4 O-CLOSE (CD) O CD tray close data output. 5 O-OPEN (CT) O Deck open / close output. 6 O-PL O Deck solenoid output. 7 I-AS I Deck auto stop signal input. 8 O-MOTOR O Deck motor ON / OFF output. 9 O-CLOSE (CT) O Deck open / close output. 10 O-CLKSFT O MICON clock shift control.
Pin No. Pin Name I/O Description 73 O-LED (CD) O CD function LED ON / OFF. 74 O-LED (TU) O Tuner function LED ON / OFF. 75 O-LED (AU) O AUX function LED ON / OFF. 76 O-LED (TA) O Tape function LED ON / OFF. 77 O-LED (PW) O Power function LED ON / OFF. (Light up : ECO standby) 78 O-ECO O Relay switch ON / OFF output. 79 O-TUCE O PLL IC chip enable output. 80 O-TUDO O PLL IC control data output. 81 O-TUCL O PLL IC control clock output.
ADJUSTMENT (TUNER / DECK / CD / FL) PWB TUNER 1 4 4 VT PARTS SIDE L904 JW970 L905 9 L907 PATTERN SIDE 2 L902 IC991 L908 L801 L901 L802 24 1 L942 IC801 TC942 L941 CN991 4 12 11 7 6 L951 CN991 5 GND CLK Rch Lch Lch 1 2 3 4 5 6 7 9 5 3 1. VT Adjustment (LW) Requirement Measuring Device: Digital Multimeter Test Point: VT, GND Adjustment Point: L942 (1) Adjust the reception frequency of the set to 144 kHz.
For MW/LW adjustment, do wiring and connection as in the following. 60cm Standard Signal Generator SET TP Lch Rch GND Connect to the respective measuring device 5. IF adjustment (MW) Requirement Measuring Device: Oscilloscope and Millivoltmeter Test Point: Lch, Rch, GND Adjustment Point: L802 (1) Adjust the setting of Standard Signal Generator (hereinafter S.S.G) to 450 kHz of 30 % variation. (2) Adjust the reception frequency of the set to 999 kHz.
For adjusting FM, do wiring and connection as in the following. i Standard Signal Generator SET TP Lch Rch GND Connect to the respective measuring device 9. Tracking Adjustment (FM) Requirement Measuring device: Millivoltmeter Test Point: Lch, Rch, GND Adjustment Point: L901, L902, L904, L905 (1) Adjust the S.S.G setting to 108.0 MHz, 75 kHz variation and reduce the output level all the way. (2) Adjust L901, L902, L904, L905 until the value of millivoltmeter reaches the maximum.
PWB MAIN PATTERN SIDE 1 Lch 3 Rch SFR352 SFR351 2 5 SP OUT GND Prepare the following before adjusting the deck. Preparation Measuring Device: Audio Signal Generator / Attenuator / Wow & Flutter Meter (Frequency Counter) / Oscilloscope / Millivolmeter / Dummy Load (6 ohm). 1) Connect the set to the measuring device as shown in the following diagram. 2) Output 1V(1 kHz) from the generator and adjust the attenuator until AUX IN becomes 0.5 V.
1. Checking Tape Speed Requirements Test Tape: TTA-100 (3 kHz) Test Point: Lch, Rch, GND Adjustment Point: SFR1 1) Insert the test tape (TTA-100), FWD play back the centre of the tape and check that the speed is 3,000 Hz ± 45 Hz. 2) RVS playback and check that ± 45 Hz is added according to the FWD speed. 2. Adjusting Head Azimuth Requirements Test Tape: TTA-300 (10 kHz) Test Point: Lch, Rch, GND Adjustment Point: Head Azimuth Screws 1) Set the V mode of the oscilloscope to ADD.
PWB CD 6 VC R546 1 RIOP SFR501 FE IC501 TE 4 RF 2 3 IC651 CD Adjustment Method Perform the adjustments after the machine enters the test mode. Place the CD mechanism on level ground. Equipment and tools required Measuring equipment: Oscilloscope (Use the probe of 10:1) Digital Multimeter (Use it in the DC Volt range) Jitter meter (Kikusui 6235) Test Disc: TCD-782 ATD-001 1. Focus Offset Adjustment 1) Connect a digital multimeter to the test point (FE), (VC).
4. Tracking Balance Check 1) Connect the test point (TE), (VC) to the oscilloscope. 2) Playback the second track of TCD-782 and press the PAUSE button. 3) Check that the traverse waveforms of the oscilloscope are up and down symmetrical. OSCILLOSCOPE A VC OUTPUT B VOLT / DIV: 500mV TIME / DIV: 1ms TE VC 5. Play Ability Check 1) Play back the 3rd, 8th, and 13th track of ATD-001. Check that the noise does not occur and sound skipping does not occur. 6.
CD TEST MODE 1. How to Start the CD Test Mode While pressing the CD FUNCTION button, insert the AC plug to the power outlet. When the test mode started, the message [CD TEST] is displayed. 2. How to Exit the CD Test Mode Press the POWER button or disconnect the AC plug. 3. Function and Usage of the CD Test Mode No Mode Button for Activation Display Operation All lights are lit.
MECHANICAL EXPLODED VIEW 1 / 1 10 A F 28 A 3ZG-3 PWB A 11 A A E 16 FL G A B 9 A 17 8 G A 12 PWB 7 A PWB E 18 D E 6 19 A PWB A PWB 27 21 PWB 5 A HT-SINK, SUB B 20 29 A HT-SINK, ASSY MAIN 2 B A A 22 A D 13 15 D B A 4 HT-SINK, SUB A 14 25 23 H C 3 2 24 1 PWB A PWB A D 26 AZM-1 F CHAS,MAIN 41
MECHANICAL PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION NO.
TAPE MECHANISM EXPLODED VIEW 1 / 2 C 1 C 2 3 7 4 8 5 10 11 13 6 15 12 14 16 D PWB B 17 E 18 19 E 9 6ZM-4 A A 43
TAPE MECHANISM PARTLIST 1 / 2 REF. NO. PART NO. KANRI NO.
TAPE MECHANISM EXPLODED VIEW 2 / 2 21 6 5 4 B 53 B 3 J 14 22 A 16 HEAD C.B 23 24 2 15 52 54 a 8 18 19 7 9 13 25 10 8 17 11 26 47 12 49 9 DECK C.
TAPE MECHANISM PARTLIST 2 / 2 REF. NO. PART NO. KANRI NO. 82-ZM1-358-010 82-ZM1-258-210 82-ZM1-363-010 82-ZM1-266-310 82-ZM1-214-010 DESCRIPTION CHAS ASSY,FPC SPR-T,PINCH L LEVER,ASSY PINCH LD LVR,DIR SPR-T,DIR 6 7 8 9 10 82-ZM1-333-210 86-ZM1-203-010 86-ZM1-221-010 82-ZM1-240-110 82-ZM1-241-310 11 12 13 14 15 36 37 38 39 40 KANRI NO.
CD MECHANISM EXPLODED VIEW 1 / 2 9 F 18 C F 13 18 14 a 16 3ZG-2 E3NM b 15 11 5 10 E 7 8 4 B 6 2 D a 12 3 17 A PWB b 47 1
CD MECHANISM PARTS LIST 1 / 2 REF. NO. PART NO. KANRI NO.
CD MECHANISM EXPLODED VIEW 2 / 2 7 8 2 3 1 A 4 M21 6 SW1 5 PWB CD MECHANISM PARTS LIST 2 / 2 REF. NO. PART NO. 1 2 3 4 5 KANRI NO.
GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE) Type.1 Type.4 TOOLS Insert a flat-bladed screwdriver into the position indicated by the arrows and remove the panel. Remove the screws of each speaker unit and then remove the speaker units. 1 Plastic head hammer 2 (() flat head screwdriver 3 Cut chisel 1 2 3 How to Remove the PANEL, FR Type.2 Remove the grill frame and four pieces of rubber caps by pulling out with a flat-bladed screwdriver.
SPEAKER PARTS LIST REF. NO. PART NO. 1 2 3 4 5 8B-CPX-002-010 8B-CPX-003-010 8B-CPX-004-010 8B-CPX-016-010 8B-CPX-602-010 6 7 8A-CJ5-415-010 8B-CP5-610-010 KANRI DESCRIPTION NO. RING,W RING,TW GRILLE,FRAME ASSY BADGE,AIWA 27.5 SPKR,W 130 25/2 TERMINAL CORD,SPKR ACCESSORIES / PACKAGE LIST REF. NO. PART NO. ! 1 1 2 3 4 KANRI DESCRIPTION NO.
211, IKENOHATA 1CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9301978 921338 Printed in Singapore
