Philips 15 rb 708 service manual

Page 1

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RADIO

15RB708/OOS

Year of release 1970 0"

For AC Mains Supply

Waverunges

MW: 185 - 580 m($l7 -1620 Kclx)
SW4 : 46.5 - 100 m ( 3.0 - 6.45 Mala)
SW3 : 29.5 - 44 m( 6.8 - 10,15 MCI!)
SW2: 188 - 26.5 m( 11.3 - 16.0 Male)
SW] : 11.3 - 17.8 m( 163 - 26.4 Mc/s)

Commie & Indlutors

l. 011' 2. RadioIP.U. Switch 3, MW
4. SW4 5. SW3 6. SW2 1. SW1
3. Tuning

9. Volume

10. 'hming Indicator

11. Balance

12. Ba

13. High Note

14. Stereo/Monowitch

15. Tape Recording

van. a Lump-

nx men 81
32 :nm: 39
33 :EM 34
34,35 : 13cc 33
36.37113 M
Ba :E2 81
Ll,L2 : 80451)

loudspeaker
2 x M15 255 88004 (2 - 5 ohms)

Int/Ext. switch is provided to cut off internal
awaken while using external speakers.

Cmtlou
Approximately 90 Watts.

Bulan-Aerlal

A plate serial for SW and rotable fcrroceptor for MW are
provided.

I'RlMMlNG THE RECEIVER :--
Refer circuit diuzrun (or trimming data.

Carer-l

Adjtut pointer on dial to left mark A with gang con-
duner in minimum capacity position. Cnnnect 5 ohms
dummy loads on the external speaker sockets with the
maker switch in cxterunl speaker position. Keep volume
cantrol at maximum and tone controls at maximum bass and
mimum high notes. Do not press buttons 2, 15 and 14.
Connect output meta! across dummy loads.

IF Circuit:
Switch on the receiver to MW with gang condenser
in minimum capacity position. Apply modulated signal of
452 Kc/s via 33 KpF condenser to grid g1 of valvr Bl
{BC}! 81) and trim [or maximum output-$17, 516, S7,
SB Ind SIG.

RF Circuit:

Apply modulated signal to aerial mket via a dummy
serial and trim for maximum output at frequencies as
shown in trimming dam

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