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                                    SPECIFICATIONS
Power source.................13.2V(10.5V-16.0V allowable) DC
Backup current..............................................1.2mA or less
Grounding system........................................Negative type
Dimensions(Chassis)..............178(W)x100(H)x158(D)mm
(Grille) ....................347(W)x214(H)x75(D)mm
Weight..........................................................................3.1kg
Cassette player
Tape................................Compact cassette tape(C30-C90)
Tape speed ......4.76 cm/sec.(+0.14 cm/sec.,-0.05 cm/sec.)
Wow and flutter.................................0.2% or less(WRMS)
Crosstalk ..........................................................40dB or less
Stereo Separation.........................................30dB or more
S/N .................................................................41dB or more
Distortion.............................................................3% or less
CD player
System ...................................Compact disc audio system
Usable discs ..................................................Compact disc
Signal format .....................Sampling frequency : 44.1kHz
Number of guantization : 16;linear
S/N .................................................................70dB or more
Distortion..........................................................0.2% or less
FM tuner
Frequency........................................87.75, 87.9–107.9 MHz
S/N(MONO) ...................................................46dB or more
Distortion(30% MOD.) .....................................1.5% or less
IF interference ...............................................64dB or more
Image interference........................................35dB or more
Stereo Separation ..............................25dB or more(1kHz)
AM tuner
Frequency ......................................................530–1710 kHz
Selectivity .......................................20dB or more(±10kHz)
S/N .................................................................42dB or more
Distortion(30% MOD.) .....................................1.5% or less
IF interference ...............................................40dB or more
Image interference........................................45dB or more

This service manual should be used together with the following manual(s):
CX-631 CRT1640 Cassette Mech. Module
CX-890 CRT2376 CD Mech. Module

CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST.......................4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...14
4. PCB CONNECTION DIAGRAM ................................38
5. ELECTRICAL PARTS LIST ........................................64
6. ADJUSTMENT..........................................................75
7. GENERAL INFORMATION .......................................81
7.1 DIAGNOSIS.......................................................81
7.1.1 TEST MODE.............................................81
7.1.2 SELF-DIAGNOSTIC FUNCTION..............87
7.1.3 DISASSEMBLY ........................................91
7.1.4 PCB LOCATIONS.....................................97
7.1.5 CONNECTOR FUNCTION DESCRIPTION ..98
7.2 PARTS................................................................99
7.2.1 IC ..............................................................99
7.2.2 DISPLAY.................................................103
7.3 EXPLANATION................................................104
7.3.1 SYSTEM BLOCK DIAGRAM .................104
7.3.2 OPERATIONAL FLOW CHART..............105
8. OPERATIONS AND SPECIFICATIONS...................106