Philips 133 service manual

Page 1

SERVICE DATA 133 133A

PHILIPS RADIOPLAYER
MODELS 133 & 133A

SPECIFICATIONS

[Subject to alteration without notice)

Power Supply . . .. ZZO-ZSOV, 40~60c/s.

Tuning Ranges . . . SSO-ISZOkc/s.
S.9-l&.4Mc/s.

Intermediate Frequency .. . . .. 4SSkc/s.

Cabinet . . . . Bakelite table.

NOTE: Madets LB and |33A are identical lxtepl for the raciitier valve types -- Modal I33 use: type 6XSGT; Model
I53A use: type EZBZr

VALVE EQUIPMENT AND VOLTAGE ANALYSIS

Valve I Valve Plate I 5mm 05:, 9.
W" FWW No. I Type Volts Volts Volts
g _
Frequency Convener V: l 6AN7 125 l so l so
If Amplifier, A.v.c. and l .
Demodulator v2 i 6N8 . 225 72 I -
Audio Amplifier v3 6N3 so _ f _
Fewer Amplifier v4 6M5 fag ..22,§, 777C * V
was,
, . 6XSGT
Rectifier V5 l (BSA) \ Cathode A Ll7 C.T., 261V
1 A .-,._ ..__
D' Vl I [1
la! Lamps vrz 53V 0.3% tubular screw
Voltage across R23, -z.ov; across R23 and rm, -6 4v

NOTE; These voltages are Measured with an "LOCO ohms per voIt meter and may vary I 0% from the ligures quoted.

They are measured tram the socket points indicated to :hessrs or across the resistors rsnd. The receiver should be
in a "no signal" condition.

T0 REMOVfi CHASSIS FROM CAIINET. Broadcast band alignment frequencies are 1,420 kc/s
Remove the power plug from the supply outlet socket. (oscillatar and aerial trimmersl and 600 kcls (slug

Remove the tour :ontroI knobs (a firm pull ii all that is paddingl; short wave band alignment frequencies Are

necessary! and the cabinet back. The chassis is held ISA Mc/s ltunina can fully ogen, oscillator trimmer!

to tha cabinet by two screws in the battle and four and 17.8 Mc/s laerial trimmer].

we, mm. m. battens cf the ab... Removal at The alignment calibration sale is stencilled on the

than six screws enables the chassis to be withdrawn dial drum. An auxiliary painter for use with this scale

from the cabinet can be mada up horn wrkshup materials and fixed to
The chassis may be replaced by a reversal of the a canvenient point at Ihs Nnina capacitor mounting

above procedure. bracket. The various markings at the scale an be

identified as below.

DIAL CALIBRATION. Proceeding in an anii-clockw direction around the
It it ix required in correct dial calibration tor an dial drum, the various points

equal error on all stations, provision is made for moving "Stop"

the cursor assembly with respect to the dial card. 550 Inc/s llama dut)

Loosen the clamping screw. make the necessary adiust- 600 kc/s [large and small dots together!

merit to the cursor position and securely mtighten the then 100 Incl: steps tn 1,300 kc/s

clamping screw. ngo kc/s (large and small dots together)

I, 00 kc/s

MMNS VOLTAGE ADJUSTIAENI. Do not attempt to Idliut the Iron can: at the fill
The power transformer rs pmvidad with tum mains m.

vultage tappinns-ZZO/Zto volts and 250/260 volts--

for adjustment to the Supply voltage at the point or DIAL SCALE

installaticn. This receiver '5 ldiustcd at the outcry m we are No trim of dial sale available With this

tha 210/240 volts tapping. receiver, one of perspex and the other at glass. The

perspex scale is fitted to the cabinet by means at

ALIGNMENT. screwed-in clamps whikt the In: scale is fitted
The iron cares tar the secondaries at the LF. tnns- means at spring trigl, l1 a ncglver fitted with a gut:
term-r: an in the top at the can. those tor the scale is to be transported any distance, it would be to

primaries are in the bennml advantage to remove th. scale and pack it separately.