Diagrams; Circuit Boards Location - Sony TA-FB940R Service Manual

3-1. CIRCUIT BOARDS LOCATION

PANEL board
SIRCS board
SIRCS SUB board
HP board
TONE board
S-D LED board
SECTION 3

DIAGRAMS

OUTLET board
PS board
(EXCEPT UK, SP, MY)
SP-TM board
PHONO board
INPUT board
MAIN board
VOL board
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
/ W or less unless otherwise
4
specified.
• f : internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• 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.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : POWER ON
• 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
: TUNER
• Abbreviation
G : German model.
EE : East European model.
AUS : Australian model.
SP : Singapore model.
MY : Malaysia model.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• b : Pattern from the side which enables seeing.
• Indication of transistor
B C E
These are omitted
5 5
TA-FB940R
WAVEFORM
1
3.8Vp-p
4MHz
IC902 1 XOUT