H.H. Scott 299S Service Bulletin

299F TEST PROCEDURE
H. H. SCOTT, INC.
36 Distortion Check
At 12v output, max. distortion .6%.
4. Tape Monitor Switch Check
Audio Oscillator to EXTRA at
.3 input to L channel. Note output
at
a
left channel speaker terminal.
Put Tape Monitor switch in the IN position.
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VOLTAGES _
ALL VOLTAGES POSITIVE DC 215% MEASURED wiTH 20 «n;s¥
VOM AND 117 VAC LINE WITH INPUT SWITCH IN EXTRA :
ceccnegeervems antennae aE OANA CS CO COTS, LEFT
NOTES:
1, UNLESS FIWERWISE SPECIFIED.
RESISTANCE IN OWMS 210% , CAPACITANCE IN MFO'S,
RESISTORS 1/4 WATT.
2. S-t INPUT SWwITcH SRA \NS-2
POSITION FUNCTION
PROHO LOW
PHONO rtiGn
|
2
3
4
Ss EXTRA
Bass
Treble
3. INPUT SWITCH SHOWN IN FULL CW POSITION AS VIEWED FROM FRONT.
& THE FOLLOWING CONTROLS IN LEFT CHANNEL ARE
Boost
10 db + 2 db
Boost 10 db + 2 db
ARKHANMALLY GAMGED. WITH: IDENTICAL CONTHOLS
PUT
Cut
15 db + 2 db
Cut 10 db +2 db
Seg setbn
SPEAKERS
TREBL
8.
Frequency Response Check
3 db down @ 20 cps or lower
Bass
3 db down @ 30 kc
5. Switch FUNCTION
St— INPUT
S2— TAPE MONITOR
S3 — mMooEe
S4 — BALANCE
55 —— SPEAKERS REMOTE
S@ — SPEAKERS MAIN
57 —— POWER
SB8— SCRATCH FILTER
9. Regulation Check
At 1 ke, load out - output rise 1 db maximum
13. Hum Checks
Position Loudness Pot Max. Hum
Extra 0 3 mv
Extra 10 5 mv
Phono High 10 | 30 mv
Phono Low 10 30 mv
Tuner 10 10 mv
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ety
299F-Ci