Adjustment <Deck - Aiwa XR-H2000 LH Service Manual

ADJUSTMENT <DECK> (FX-NH2000)
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3 7 63 1515 0
A MAIN C.B
7
4
D DECK C.B
TE
L 13942296513
SFR1
1
< DECK SECTION >
1. Tape Normal Speed Adjustment
Settings : • Test tape :
• Test point :
• Adjustment location : SFR1
Method : Play back the test tape and adjust SFR1 so that
the test point becomes 3000Hz ± 5Hz(FWD)
Then check REV speed is 3000Hz ± 45Hz.
2. High Speed Check
Settings : • Test tape :
• Test point :
Method : After normal speed adjustment, play back
(High speed) the test tape. Then check tape
speed is 6000Hz ±400Hz (FWD).
3. Head Azimuth Adjustment
Settings : • Test tape :
• Test point :
www
• Adjustment location : Head azimuth
Method : Play back the 10kHz signal of the test tape and
adjust screw so that the output becomes
.
maximum.Next, perform on each FWD PLAY
and REV PLAY mode.
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6
SFR351
SFR352
TTA–100 (Tape center)
TP1 (Rch), TP2 (Lch)
TTA–100 (Tape center)
TP1 (Rch), TP2 (Lch)
TTA–300
TP1(Rch), TP2 (Lch)
adjustment screw
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2 9
8
1 2 3 6 7
4 5
SFR305
SFR306
SFR304
SFR303
SFR301
SFR302
DECK–1 P,DECK-2R/P/E HEAD HEAD
Q Q
3 6 7 1 3 1 5
3
REV
4 PB Sensitivity Adjustment (DECK1, DECK2)
Settings : • Test tape :
• Test point :
• Adjustment location : SFR301 (DECK1, Lch)
Method : Play back the test tape and adjust SFRs so that
the output level of the test point becomes
245mV (DECK2), 260mV (DECK1).
5. PB Frequency Response Check (DECK1, DECK2)
Settings : • Test tape :
• Test point :
Method : Play back the 315Hz and 10kHz signals of the
test tape and check that the output ratio of the
10kHz signal with respect to that of the 315Hz
signal is 0dB .
Next, check that the Lch and Rch difference
level of 10kHz signal is less than 2dB.
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.
– 46 –
9 4 2 8
8 9
0 5 8 2 9 9 4 2 8
3
FWD
TTA–200
TP1 (Rch), TP2 (Lch)
SFR302 (DECK1, Rch)
SFR303 (DECK2, Lch)
SFR304 (DECK2, Rch)
TTA–300
TP1 (Rch), TP2 (Lch)
m
9 9
9 9