Diagrams; Circuit Boards Location - Sony TA-FB920R 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

PS board
OUTLET board (AEP,G,EE)
SP-TM board
PHONO board
INPUT board
MAIN board
VOL board
– 5 –
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.
• ¢ : internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• 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.
• 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
WAVEFORM
1
3.8Vp-p
4MHz
IC902 1 XOUT
– 6 –