SONY CFDS400, CFD ZW755 Service Manual
CFD-ZW750/ZW770
SERVICE MANUAL
Ver 1.0 1999. 01
Photo : CFD-ZW770
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION
CFD-ZW750:
With 3.2-ohm loads, both channels driven
from 150 - 8,000 Hz; rated 2 W per channelminimum RMS power, with no more than
10% total harmonic distortion in AC
operation.
CFD-ZW770:
With 6-ohm loads, both channels driven
from 150 - 8,000 Hz; rated 3.6 W per channelminimum RMS power, with no more than
10% total harmonic distortion in AC
operation.
CD
Section
TC
Section
US Model
Canadian Model
Model Name Using Similar Mechanism PMC-D305
CD Mechanism Type KSM-213CDM
Optical Pick-up Name KSS-213C
Model Name Using Similar Mechanism NEW
T ape Transport Mechanism T ype MF-ZW750-117
Other Specifications
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wave length: 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW
(This output is the value measured at a distance of
about 200 mm from the objective lens surface on
the optical pick-up block with 7 mm aperture.)
Spindle speed
200 r/min (rpm) to 500 r/min (rpm) (CLV)
Number of channels
2
Frequency response
20 - 20,000 Hz +1/–2 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FM: 87.6 - 108 MHz
AM: 530 - 1,710 kHz
Antennas
FM: Telescopic antenna
AM: Built-in ferrite bar antenna
Cassette-corder section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 120 s (sec.) with Sony cassette C-60
Frequency response
TYPE I (normal): 80 - 12,500 Hz
– Continued on next page –
CD RADIO CASSETTE-CORDER
MICROFILM
– 1 –
5-6. SCHEMATIC DIAGRAM — CD SECTION — (for CFD-ZW750/ZW770) • Refer to page 22 for Note on Schematic Diagram.
• Refer to page 51 for IC Block Diagrams.
CFD-ZW750/ZW770
• Wavef orms (MODE:PLA Y)
1
2.5V
Approx. 100mVp-p
$¶
(TEI)
IC701
2
1.3±0.5Vp-p
#£
(RFO)
IC701
2.5V
5
16.9344MHz
IC703
&¡
2.2Vp-p
(XTAO)
3
Approx. 200mVp-p
1
(FEO)
IC701
4
2Vp-p
7.6µsec
@¡
(MDP)
(Page 27)
(Page 33, 43)
IC703
– 23 – – 24 –
5-8. SCHEMATIC DIAGRAM — CONTROL SECTION — (for CFD-ZW750/ZW770) • Refer to page 25 for Note on Schematic Diagram.
• Refer to page 53 for IC Block Diagrams.
(Page 50)
CFD-ZW750/ZW770
(Page 24)
(Page 33, 43)
– 27 – – 28 –
• Semiconductor Location
Ref. No. Location Ref. No. Location
D1 F-12
D2 F-12
D3 F-11
D4 C-12
D5 B-12
D6 H-12
D8 C-12
D9 C-12
D10 H-12
D301 E-7
D302 H-5
D303 I-5
D304 F-4
D305 F-4
D306 H-9
D307 H-9
D308 H-9
D309 H-8
D310 H-8
D311 E-8
D312 E-8
D313 C-11
D314 C-11
D315 C-10
D316 D-10
D317 D-10
D318 D-11
D319 C-11
D320 C-11
D321 D-10
D322 D-10
D323 D-9
D324 E-10
D325 B-8
D326 B-10
D328 D-10
D330 G-4
D331 B-9
D332 G-5
D333 D-6
D334 H-4
D335 H-5
D336 H-8
D337 I-8
D338 H-8
D339 H-8
D340 H-8
D341 H-5
IC1 H-11
IC2 H-10
IC301 G-6
IC302 D-7
IC304 C-7
IC305 H-4
Q1 F-10
Q101 C-6
Q201 C-6
Q301 F-6
Q302 F-6
Q303 F-6
Q304 F-7
Q305 F-4
Q306 G-4
Q307 G-4
Q308 F-4
Q309 F-4
Q310 F-4
Q311 F-9
Q312 F-9
Q313 E-9
Q314 E-9
Q315 H-7
Q316 F-8
Q317 F-8
Q318 F-8
Q319 F-8
Q320 C-11
Q321 E-7
Q322 E-8
Q324 C-11
Q325 C-11
Q327 D-11
Q328 D-11
Q329 D-11
Q330 D-9
Q331 B-9
Q332 E-8
Q333 B-9
Q336 I-5
Q337 I-5
Q338 D-8
Q339 D-9
Q340 G-4
5-10. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — (for CFD-ZW750) • Refer to page 53 for IC Block Diagrams.
(Page 50)
(Page 37)
(Page 27)
(Page 24)
CFD-ZW750/ZW770
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• C : panel designation.
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
( ) : PB (TAPE)
< > : REC (TAPE)
[ ] : CD STOP
(( )) : DUBBING
<< >> : HIGH-SPEED DUBBING
• Voltages are tak en with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Signal path.
F : FM
E : PB (DECK A)
d : PB (DECK B)
a : REC (DECK B)
J : CD
– 31 – – 32 – – 33 –
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