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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Page 2

HEW/008
MECHANICAL PARTS

Description Code No. | Description Code Nn,
Cabinet 3115 108 01920 Socket {or P. U [Tape Recorder 2422 026 00884
Lot 3115 104 02030 Plus for above 078152180
Ornamental Ring 3115 105 10400 Tuning Spindle 3115 108 00500
Back Plato 3115 103 00131 Drive Pulley x 2 3122 T94 H640
Bottom Plate . 3115 103 00030 Bracket for fixing back plate x 10 31 is 101, 21120
Die] 3115 105 00521 Nail for fixing bracket x 20... 2522 6130 0:004
Pointer 3115 108 70100 ExtensionSpindle for V Control 3115 101 201,90
0131 Shade 3115 108 00600 Fuse Holder (125 mA) 3115 100 10090

Knob (Tuning + Volume

Knob (Ban + Treble)

Knob (Balance)

Knob (Slide Switch)

Top Profile (Rexine Covered)

Ornamental Profi1e (Top)

Ornamental Profile (Tone +
BIIlImce Control) x 3

Ornamental Profile (Push Button
Switch) ...

Band Switch Assy .

Press Button x 6

Push Button Switch Assy

Push Button x 3

3115 108 01840
311510402070
3115 108 01910
3115 104 01110
3115 108 02131
311510510430

311510510440

311510510420
3115108 40065
3115 104 00331
3115108 01930
3115 104 02170

Screw! for fixing :-

Varco
Cabinet Leg
Varco drum/Ext.

Spring for fixing '-
Drive Cord

Fuse Holder (6 3 amps)

Grommet for Varco x 3

Nut for fixing potentiometer

Bush for drive cord x 3

Nut for fixing tone control/push
button switch assy

Back/Bottom Plate

Spindle

Knob (Balance/Tone Control). '

3115 100 IOORO
3122 996 42.380
3115100 40320
3115 104 00350

2522 401 04011

2515123 07009
2522 00107173
251512378011
2322 001 07095
2522 040 31045

3122 996 46820

Lamp Holder 3115100100500r SKB4 + HT cut 011' (Long) .. 3115 101 00250

_ 2422 473 01001 -do - (Small) .. 3115 101 00260
Main: Cord 3115 108 50150 Knob (Tuning/Volume) .. 3122 993 19130
Varco Drum 3115 108 00160 Knob (Speaker Switch) 1. 3115 101 00150
Valve Holder )4 7 .. 2422 502 00001 C011 x 3 3122 998 10960
Valve Holder for Magic eye . 3115 208 00050 1F Coils x 2 .. 3115 101 00010
Socket Plate Assy ., 3115 108 01871] Dial Shade 3122 996 4.1710
Slide Swnch (Speaker) .. ' 3115 108 40220 Coil: x 2 3115 101 00080

ELECTRICAL PARTS
Part No. Code No. Part No. Code No.

C1 (3 KpF) 2015 300 56011 R26 (2.2M ohms) .. 2515 350 00115
07030 pF) 2015 300 96002 RIM/8310 2M ohms) .. 2522 360 02035
01318 2 pF) 2215 555 56828 R42IR43 (220K ohms) 2322 560 02032
C21 (455 pF) 2015 300 96003 359. R60 (3300 ohms) 2115 104 06333
C30 (195 pF) 2015 300 96001 21(6 3 our?) 2422 086 00053 or
C61/C62§50 + $0 mP) 2015 199 00001 2415 086 00001
063 (8 m 2015 031 00001 ugsm .1 2422 086 mom:
R22IR23 (0.5 + 1.7M ohms) 2322 360 02084 1.1. (6.3V. 320 mA) .. 3358038513369:

During production 01' 15RB7OBIOOS. the following changes luv. been introduced :

(1) Connection to contact 2 and 3 of witch SKB 111 (Stereo) h deleted tad wire to contact 3 i: canned.
(2) Existing Drive Cord lengths 1045 mm end 600 mm. In themed to 990 mm Ind 632 :1: 1 mm respectively.

(3) Part No. Deleted Added Pat No.
C45 2215 555 55182 2215 555 55102 us
C46 2215 555 55822 ,22I5 555 5502 no
C47 2215 555 55122 2215 555 sun It»
C48 2215 555 $5182 2215 555 5m: no
cw 2215 555 55152 161
car 2215 555 55152 _ R62}
R16 2315 202 62225 m5 202 61224 Ilte m
1111 . 2315 202 62225 2315 101 61124 (Sn-1m)

In series with C59 Ind CO

Deleted

2115 202 32393
2313 202 32393
2315 202 32513
2315 202 32513
1115 104 04151
211510404151
15193 40220

FOR OTHER W run mm W W

Note: I)Incircuitdinmmdsz1ulledlflum
2) InRF.Cirw1ttoruWWCflkW-haeuttmuatued.

3) The code number DIS 4 04..

diagram.

.mhMulllilflMu-u

Added

2315202 32243
2315 202 32243
2315202 32683
2315202 32683
211510404131
211510404181
3115108 40551

:rct'er symbols in eilcuét