Adjustment - 1 <Deck / Front - Aiwa SIMPLE-2 XH-AG1000 HR Service Manual

ADJUSTMENT – 1 <DECK / FRONT>
< DECK SECTION >
1. Tape 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) and FWD
SPEED ± 45Hz (REV).
2. Head Azimuth Adjustment
Settings : • Test tape :
• Test point :
• Adjustment location : Head azimuth
adjustment screw
Method : Play back the 8kHz signal of the test tape and adjust
screw so that the output becomes maximum. Next,
perform on each FWD and REV PLAY mode.
3. PB Frequency Response Check
Settings : • Test tape :
• Test point :
Method : Play back the 315Hz and 8kHz signals of the
test tape and check that the output ratio of the
8kHz signal with respect to that of the 315Hz
signal is 0dB ± 3dB.
4. PB Sensitivity Adjustment
Settings : • Test tape :
• Test point :
• Adjustment location : SFR303 (Lch)
Method : Play back the 400Hz signal of the test tape and adjust
SFRs so that the output level at TP3, TP4 is 245mV ±
10 mV.
5. REC/PB Frequency Response Adjustment
Settings : • Test tape :
• Test point :
• Input signal :
• Adjustment location : SFR351 (Lch)
Method : Apply a 1kHz signal and REC mode.
Then adjust OSC attenuator so that the output
level at the TP3, TP4 becomes 17mV. Record and play
back the 1kHz and 10kHz signals and adjust SFRs so
that the output level of the 10kHz signal becomes 0dB
± 0.5dB with respect to that of the 1kHz signal.
6. REC/PB Sensitivity Adjustment
Settings : • Test tape :
• Test point :
• Input signal :
• Adjustment location : SFR305 (Lch)
Method : Apply a 1kHz signal and REC mode.
Then adjust OSC attenuator so that the output level at
the TP3, TP4 becomes 170mV.Record and play back
the 1kHz signal and adjust SFRs so that the output
level is 0dB ± 0.5dB.
TTA–100
TP3 (Lch), TP4 (Rch)
TTA–330
TP3 (Lch), TP4 (Rch)
TTA–330
TP3 (Lch), TP4 (Rch)
TTA–200
TP3 (Lch), TP4 (Rch)
SFR304 (Rch)
TTA–602 (NORMAL)
TP3 (Lch), TP4 (Rch)
1kHz/10kHz (–20VU)
SFR352 (Rch)
TTA–602 (NORMAL)
TP3 (Lch), TP4 (Rch)
1kHz (0VU)
SFR306 (Rch)
< FRONT SECTION >
µ
7. -con Clock Adjustment
Settings : • Test point :
• Adjustment location : L101
Method : Insert AC plug while pressing the TUNER function key
and POWER key.
Connect a frequency counter across TP10 and TP11.
Then adjust L101 so that the test point becomes
167.06Hz ± 0.17Hz.
– 46 –
TP10 (K-SCAN)
TP11 (GND)