Sony TA-F45 Service Manual

1. REPLACEMENT OF THE TRANSFORMERS IN
THE INVERTER CIRCUIT
The lead wire arrangement for each of T901 and
T902 in the inverter circuit are shown in Fig. 1.
As the repair parts, T901 and T902 are formed by
only iron core. Thus, if the coils are defective, arrange
TA-F45
2. INVERTER CIRCUIT TRANSISTOR REPLACE-
MENT
When any of the inverter transistors ‘Qv03. Q904) is
broken, replace their transistors together.
A pair of transistors with the same r2nk is provided
for service field.
a new transformers as shown below. Note that the
lead lengths must be exact. Also wind the coil
carefully.
_
PartNo. |
i
X-4863-506-1 Transiszez Ass’y, service
Description
Q903, 904
T902 core
{1-543-100-00)
one turn
Q | wire length: 40mm (1% inches)
| diameter: 0.45mm
T901 core
Erne .
1-543-100-00.
white
i two turns
U __—_ 9 | wire length: 55mm (2% inches)
| diameter: 0.45mm
(one turn
@ | wire ength: 50mm (2 inches)
\diamezer: 0.26mm
two turns
wire length: 70mm
(2% inches)
siameter: 0.26mm
four turns
, wire lengen: 120mm (4% inches)
| diameter: 0.45mm
| two turns
| wire length: 70mm (2% inches)
! diameter: 0.2mm
pulse power
supply board
Fig. 7

Sony TA-F45 Specifications

General

Brand	Sony
Model	TA-F45
Category	Amplifier
Language	English