Philips 125 service manual

Page 1

SERVICE DATA

PHILIPS RADIOPLAYER
MODEL 125

SPECIFICATIONS

(Subject to alteration without notice)

Power Supply , ... r ZZO-ZGOV, 40-60 c/s.
Tuning Ranges . , 530-l620 kc/s.

5.9-lB.4 Mc/s.
Magnified S/W Ranges , . ., t 9440.0 Mc/s (3lM band)

ll.4~l2.l Mc/s 125M band)
15.0-l5t7 Mc/s (19M band)
17.4-18.0 Mc/s (ISM band)

Intermediate Frequency . 455 kc/s.
Cabinet . r, i ., , ,, Wooden table

VALVE EQUIPMENT AND VOLTAGE ANALYSIS

. ' Vdve Valve Flat. Screen Owl P.
"9 F""'°" I Na. 5 Typl Velts i Volts Volts
KF. Amplifier Vi 5N8 252 i 49 -
Fuqumay Converter v2 ; 6AN7 252 i 92 99
LF. Amplifier, A.V,C. and : -

Demadulltor ; V3 l 6N8 252 i 75 _
Audio Amplifier v4 6N8 4i » l2 _
Power Amplifier vs SMS 77 7235 _2_s_2_ _ _
Rectifier vs 5x551 vs Cathode to U4 c.T. e 303v.
Dial Lamas V:/ll25 6.3V 0.32A tubular serew

Voltage across R6, -3.ZV; across R5 and 6,~7l9V

MDTE: These volteges are measured with an "1,000 ohms per volt" meter and may vary 1 3% from the figures quoted.
They are measured from the socket paints indicated to chassis or arms the resislars listed. The receiver should b~
In a "no signal" condition.

To [EMOVE CHASSIS FROM CAIINET. MAINS VOLTAGE ADJUSTMENT.
Remove the power plug from the mains wtlot socket.

The puwer transformer is provided with two primary
Remove the akin-t back and the law control knobs

winding tlppinns-ZZD/ZN} volts and 250/250 volts--

1: firm pull I: all thut is necessary). Release the dial for adjustment of the receiver to the supply vcltage a!
eursar ambly from the dial card and withdraw the the point of installation. The receiver is adjusted at
dial lmps plug tram its socket The chassis is held the hem to the 220/240 volts ranting-

in the cabinet by means at four screws in the base at

the dussis and three in the battle, Remuval of that DIAL CALIBRATION ADJUSTMENT.

Ems permits the chassis to be withdrawn trvm the

If station calibrations are incorrect by an equal amount
cabinet A: the chassis is withdrzwn, it shquld be tilted

over the I'ngth of the dinl scale, the condition may be
to prawnf the battle fouling 'hI dial assembly. (erected by lousening the cursor to dial card clamping

The chassis may be refitted to the cabinet by a screw, Ill-king the necessary adjustment, and firmly
reversal of the ubcve procedure. rerightening the screw.