Philips b 4 x 66 u service manual

Page 2

- 2 - MBGU

Inmrtent

[hm connecting a receiver in LG. mains uupply for repair: or
trimming, it is necessary to use a transformer with eepente win-
dings. The secondary winding met not he eel-that! and one set only
should be cunneeted to the transformer. The cha-eie can then be
earth. When connecting to me. mains, check for the right polarity.

mun-11133 the receiver

0_____enere1

Volume control at maximum
Connect, joltmeter via I trimming zmefemer to the loudspeaker

. .
Unleel otheiwiee dated, Ill sigma).- m applied via a dummy aerial
to the aerial eccket. Screw the cox-en of the Ll". bendflltere nearly

am out (348, 546, 342, 340)

Trimming is done with the aid of trimming points on the dial.
Trimmingpoint 1 is on the extreme left on the 11131

fuming-point 2 is on the extreme right on the dial

Before trimming, turn the variable capacitor to minimum and set the
pointer on the triminzpomt 1

hm for
Wave- Trimming
Signal mu. output Indicative
range point vcltege
LP. 452 ke/e a :2
marinara "V" V: 32°32 1 ' 340
s - . 342
550 kn/e 2 $31,324-s25
1MB ' Repeat
1630 lea/a 1 (234,021
3,3 llc/e 2 $31,322
s.w.3 Repeat
a.F.- and 10,1 Ic/I 1 c32,czo
cecillatcr
circuits 11.8 lie/e Tune the 023
receiver
3.1.211
12,2 lac/a 1 038
14.1 Ian/s 2 528,517
S.l.2e Repeat
26,3 Mc/e 1 1339,1219

For all wavered-use, excepted S.W.2h, the oscillator frequency -
tuned frequency + LP.

The weverengeewitehwefere, indicated in the circuit diagram, are
drain: in position "pick up"

The voltages and currents, indicated in the circuit diagram, are
meeeured with the receiver connected to 220V , waverangeewltch to
ILI. and no signal to the aerial socket.