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CDX-3700
E Model
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For schematic diagrams · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. · % : indicates tolerance. ¢ · : internal component. · C : panel designation. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. · U : B+ Line. · Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords. · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. · Circled numbers refer to waveforms. · Signal path. F : FM f : AM J : CD · (( )) : Page of supplement-1. For printed wiring boards · Y : parts extracted from the conductor side. ® · : Through hole. ¢ · : internal component. · b : Pattern from the side which enables seeing. (The other layer's patterns are not indicated.) Caution: Pattern face side: (Side B) Parts face side: (Side A) · (( Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.
SERVICE MANUAL
SUPPLEMENT-1
File this supplement with the service manual.
Subject : Change of Main and Key Boards
(ECN-CSB00629)
When performing service and inspection, check the suffix of the part number of the main and key boards.
1. DISCRIMINATION
MAIN BOARD (SIDE B)
)) : Page of supplement-1.
MAIN Board Part No. Former : 1-672-491-11 New : 1-672-491-12 KEY BOARD (SIDE B)
KEY Board Part No. Former : 1-672-492-11 New : 1-672-492-12
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CDX-3700
3. SCHEMATIC DIAGRAM -- MAIN SECTION (1/3) --
((Page 5))
· Waveforms
(MODE:PLAY)
1
1.3Vp-p
IC102
9
(ARF)
2
0V Approx. 200mVp-p
IC102
@TM
(TE)
3
0V Approx. 600mVp-p
IC102
@£
(FE)
Note: · Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY
((Page 6))
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4
CDX-3700
4. SCHEMATIC DIAGRAM -- MAIN SECTION (2/3) --
((Page 4))
((Page 6))
Note: · Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM < > : CD PLAY
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5
CDX-3700
5. SCHEMATIC DIAGRAM -- MAIN SECTION (3/3) --
((Page 5))
((Page 4))
Note: · Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM ( ) : AM < > : CD PLAY
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6
((Page 7))
CDX-3700
6. SCHEMATIC DIAGRAM -- DISPLAY SECTION --
((Page 6))
Note: · Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM
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