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CDX-M620/M670
SERVICE MANUAL
US Model
CDX-M620/M670
Ver 1.0 2001. 03
AEP Model
UK Model
E Model
CDX-M670
• The tuner and CD sections have no adjustments.
Model Name Using Similar Mechanism CDX-M700R/M750
CD Drive Mechanism Type MG-383Z-121//K
SPECIFICATIONS
Optical Pick-up Name KSS-720A
MW/LW (AEP, UK, E model)
AUDIO POWER SPECIFICATIONS (US MODEL)
Tuning range MW: 531 – 1,602 kHz
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
LW: 153 – 279 kHz
23.2 watts per channel minimum continuous average powe
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CDX-M620/M670 Inputs Telephone ATT control US model: lead Illumination control lead CAUTION BUS control input connector BUS audio input connector Use of controls or adjustments or performance of procedures Antenna input connector (US model) other than those specified herein may result in hazardous Aerial input connector (AEP, UK, E model) radiation exposure. AUX IN connector (US model) Tone controls Bass ±8 dB at 100 Hz Treble ±8 dB at 10 Hz Loudness +8 dB at 100 Hz If the optical pick-up block
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CDX-M620/M670 NOTE FOR THE OPENING OF THE FRONT PANEL TABLE OF CONTENTS In this set, the front panel is lowered to below the bottom face when it is opened. 1. GENERAL ........................................................................... 4 When servicing the set, place it on a stand having a height of about 2 cm. 2. DISASSEMBLY 2-1. Front Panel Assy (Normal) ............................................... 16 2-2. Front Panel Assy (Inoperative) ......................................... 1
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CDX-M620/M670 SECTION 1 This section is extracted GENERAL from instruction manual. US MODEL AEP, UK, E MODEL 4
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CDX-M620/M670 US, AEP, UK, E MODEL 5
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CDX-M620/M670 US MODEL 6
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CDX-M620/M670 AEP, UK, E MODEL 7
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CDX-M620/M670 8
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CDX-M620/M670 9
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CDX-M620/M670 US, AEP, UK, E MODEL 10
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CDX-M620/M670 11
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CDX-M620/M670 US MODEL Connection 12
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CDX-M620/M670 13
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CDX-M620/M670 AEP, UK, E MODEL Connection 14
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CDX-M620/M670 15 15
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CDX-M620/M670 SECTION 2 DISASSEMBLY Note : This set can be disassemble according to the following sequence. 2-2. FRONT PANEL ASSY (INOPERATIVE) Front Panel Assy (Normal) CD Mechanism Block, Front Panel (KEY) Assy Front Panel Assy (Inoperative) 4 screw (panel) Sub Panel (CD) Sub Assy Motor Block Assy, Cam (R) Assy Main Board Heat Sink Chassis (T) Sub Assy Lever Section Servo Board Shaft Roller Assy Floating Block Assy 1 5 Optical Pick-up Block 3 screw (panel) flexible board 2 front panel (DSPL)
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CDX-M620/M670 2-4. SUB PANEL (CD) SUB ASSY 1 CN603 4 claw 3 PTT 2.6x6 5 claw 2 PTT 2.6 x6 6 sub panel (CD) sub assy 2-5. MOTOR BLOCK ASSY, CAM (R) ASSY Note : Install the motor block assy and cam (R) assy in this roder. For phase alignment between cams (L) and (R), see page 22 and 24. 1 PTT 2.6x6 Note: Install the cam (R) assy with 4 PTT 2.6x6 the cam fully rotated in the direction of the arrow A. 5 motor block assy A 2 cam (R) assy 3 CN602 17
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CDX-M620/M670 2-6. MAIN BOARD 5 MAIN board 4 PTT 2.6x6 ground point 3 PTT 2.6x6 ground point 2 PTT 2.6x6 1 PTT 2.6x6 2-7. HEAT SINK 5 heat sink 4 PTT 2.6x6 3 PTT 2.6x10 2 PTT 2.6x6 1 PTT 2.6x6 18
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CDX-M620/M670 2-8. CHASSIS (T) SUB ASSY 2 P 2x3 3 P 2x3 1 Unsolder the 4 chassis (T) sub assy lead wires. black red white 2-9. LEVER SECTION 5 guide (disc) 6 lever (R) 3 tension spring (LR) 7 lever (L) 1 special screw 2 DISC IN SW board 4 claws 19
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CDX-M620/M670 2-10. SERVO BOARD 7 special screws 6 special screws 2 CN2 3 Removal the solders. 1 CN3 4 P 2x3 8 SERVO board 5 loading motor assy 2-11. SHAFT ROLLER ASSY 3 retaing ring (RA) shaft retainer (roller) arm washer 4 shaft retainer (roller) washer shaft retainer (roller) retaing ring (RA) arm Fig. 1 5 shaft roller assy 2 arm (roller) 1 tension spring (RA) 20
