Diagrams; Circuit Boards Location - Sony CMT-SP55TC Service Manual

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.
Note:
• 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 Ω and
1 /
4
specified.
• : internal component.
f
• C : panel designation.
Note:
The components identified by mark 0 or
dotted line with mark 0 are critical for
safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• no mark : FM
∗
: Can not be measured.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD
d : TAPE
G
: REC (TAPE/MD)
j
: MD
• Abbreviation
MY : Malaysia model.
SP : Singapore model.
HK : Hong Kong model.
KR : Korea model.
AED : North European model.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: Through hole.
a
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor
C
Q
These are omitted
B E
B C E
These are omitted
4
SECTION 3

DIAGRAMS

W or less unless otherwise
• WAVEFORMS
– MAIN BOARD –
1
IC701 qa XCOUT
2.7Vp-p
30.5µsec
2
IC701 qd XOUT
4.6Vp-p
100nsec

3-1. CIRCUIT BOARDS LOCATION

tuner unit (FM/AM)
LED board
PANEL board
PIN JACK board
MAIN board