Philips 23 RL 475 Service Manual

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PHILIPS
PHILIPS
181-195
HEAD OFFICE:
WAKEFIELD STREET.
5-7
AUCKLAND BRANCH:
CHRISTCHURCH BRANCH: 77 FERRY ROAD.
GENERAL
Power Supply
Philips Power Pack
v.
9
Controls
Four pushbuttons
Tuning and volume knobs.
speaker
The
(1)
With volume control
(2)
at
an ambient temperature
supply
adjust the collector
To
(3)
Turn
Volume
(a)
Turn trimpot
(b)
Insert
(c)
Adjust
(d)
means
adjustment
been replaced.
the position
(4) For
ALIGNMENT INSTRUCTIONS
condenser
Turn tuning
maximum. Keep the audio output
operations.
alignment
all cores
Screw out
Trimming Frequency
455
Kc
Modulated
30%
455
Kc
Modulated
30%
R. CIRCUIT ALIGNMENT
F
.
local oscillator
The
.
to
512
Coverage
signal generator
Connect
Trimming Frequency
512
Kc
Modulated 30%
1635
Kc
Modulated
30%
Repeat the
Alignment once more
RF
TRIMMER LOCATION DIAGRAM.
VOL CONTROL
I
I4
DRIVE CORD ASSY.
ELECTRICAL INDUSTRIES
WELLINGTON. G.P.O.
AUCKLAND.
HARGREAVES STREET,
CHRISTCHURCH.
ER4304 or
Eveready 765
treble, bass
off, on,
impedance is ohms.
8
the total
current consumption
minimum
20°C should be between
of
the output
current of
to
Control down minimum.
to the right against stop.
R23
meter (range 10Ma) in collector-line
collector
current
of
TR 7 (AC
to at
an ambient temperature
of trimpot R23 Ma
3
should not be normally
coils see
of trimmers and
capacity (higher frequency) and the volume control
to minimum
level constant at
LP.
of transformers except
Connect Signal Generator
to base
Via 33K pfd
base
Via 33K pfd to
at a higher frequency than the
is
1635 Kc.
aerial to
Standard
Via
Dummy
Gang Position
closed.
Fully
Maximum
Fully open°
capacity
Minimum
as above.
3RD.IF?. ND. IFT.
1
"15
"3.".
LILIZ.
LISJLO
"U
OFF
BASS YREILE
SKJ. 5K1. SKA.
TUNING CONDENSER
CAPACITY
MAXIMUM
AT
mica
OF NEW ZEALAND
BOX 2097. PHONE 57-250.
5124. PHONE 34-410.
P.O. BOX
PO.
1488. PHONE 65-244.
BOX
Speaker
Battery.
Eliptical,
6"
't
C' in
"cm
ry us
the set
of
and
12
transistors as follows:-
proceed
,
at
of point on
TR 6 X
at battery voltage
128) a of
20°C.
of
necessary unless transistors
the
location diagrams.
the trimmer
approximately
50 Mw during
L15-Ll6 and L7-L8.
Adjust for Max. Output
Cores L15-L16, L11-12
TR 2
L13-l4.
&
Cores L7-8 and
TR
1
L9-10.
signal
frequency.
aerial socket
the
of
for Max. Output
Trim
oscillator
L4~6
L2-3 aerial coil
capacity
oscillator
L11
aerial
trimmer
C
7
I.
L 2
.
"011:...
ISI'.IFT.
.
.0.
O T INNER
ml
nu
SECTION
SECTION
GANG
TUNING
ON
I
SKA.
|
I
-————/€
PHILIPS
LIMITED
23
watts
ohms,
8 6
transist
diode
' 5.
or , 3
g 7
with volt
9
M/a.
16
circuit.
volt by
9
This
have
'
to
receiver.
core
rod
on
trimmer
475
RL