Block Diagram; Circuit Board Location - Sony CFD-V27 Service Manual

SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
RECORD SWITCH board
CONNECTOR board
INLET board
BATTERY board
HALF BATTERY board
POWER board
VOLUME board
DISPLAY board
CD MOTOR board
CONTROL board
MAIN board
— 17 —

6-2. BLOCK DIAGRAM

MAIN BOARD
L1, CT1
FM TRACKING
L2, CT2
FM F-COVERAGE
L3, CT3
AM IF
AM TRACKING
FM IF
OPTICAL PICK-UP
BLOCK
L4, CT4
(KSS-213CDM)
AM F-COVERAGE
CNP702
12
10
11
13
9
14
7
5
3
2
4
1
CNB701
3
4
1
2
5
6
— 18 —
KH308 KH307
1
2
KH306 KH307
CNJ302 CNJ302 CNB302
1
4
3
CNB302
RECORD
SWITCH
BOARD
KH902
CONTROL
BOARD
KH803 CNP803
7
6
5
4
3
2
CNP304
4 3 2 1
CNJ304
LCD BOARD
CNP802 CNP801
1-4
5-18
— 19 —
KH307 KH308
2
KH307 KH306
4
VOLUME
BOARD
INLET BOARD
CNP902
3 3
2 2
4 4
KH902
CNP907
1 3 2
1 3 CNJ907
KH904
1 3 2
CNB907
BATTERY POWER
BOARD BOARD
CNB907 RECT
4
D901-904
4
CNB908
!
4 T901
CNB908
POWER
HALF
TRANSFORMER
BATTERY
BOARD
DRY BATTERY
SIZE "D"
(IEC DESIGNATION R20)
6PCS. 9V
— 20 —
CFD-V27
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• b : Pattern from the side which enables seeing.
Note on 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 / W or less unless otherwise
4
specified.
• ¢ : internal component.
• 2 : nonflammable resistor.
• C : panel designation.
• H : adjustment for repair.
• U : B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
– For Radio, TAPE section MAIN (1/2) –
no mark : PLAY (TAPE SECTION)
CD STOP
( ) : REC (TAPE SECTION)
[ ] : FM (RADIO SECTION)
< > : AM (RADIO SECTION)
– For CD Section MAIN (2/2) –
no mark : CD PLAY
TAPE STOP
• Voltages are taken with a VOM (Input impedance 10 M ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F : FM
E : PB
a : REC
J : CD