Aiwa Z-L700 Service Manual page 35

B MICON C.B
K DECK C.B
SFR1
8
< DECK SECTION >
8. Tape Speed Adjustment (DECK 2)
Settings : • Test tape : TTA–100
• Test point : TP8 (Lch), TP9 (Rch)
• Adjustment location : SFR1
Method : Play back (FWD) the test tape and adjust SFR1 so
that the frequency counter reads 3000Hz ± 5Hz and
± 45Hz (REV) with respect to forward speed.
9. Head Azimuth Adjustment (DECK 1, DECK 2)
Settings : • Test tape : TTA–330
• Test point : TP8 (Lch), TP9 (Rch)
• Adjustment location : Head azimuth
Method : Play back (FWD) the 8kHz signal of the test tape
and adjust screw so that the output becomes
maximum.
10. PB Frequency Response Check (DECK 1, DECK 2)
Settings : • Test tape : TTA–330
• Test point :TP8 (Lch), TP9 (Rch)
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
within 5dB.
11. PB Sensitivity Check (DECK 1, DECK 2)
Settings : • Test tape : TTA–200
• Test point : TP8 (Lch), TP9 (Rch)
Method : Play back the test tape and check that the output
level of the test point is 230mV ± 3dB.
IC101
L101
14
adjustment screw
FL101
TP7
(O-KSCAN)
14
DECK–1 P HEAD
DECK-2 R/P/E HEAD
12. REC/PB Frequency Response Adjustment (DECK 2)
Settings : • Test tape : TTA–602
• Test point : TP8 (Lch), TP9 (Rch)
• Input signal : 1kHz / 10kHz (LINE IN)
• Adjustment location : SFR351 (Lch)
Method : Apply a 1kHz signal and REC mode. Then adjust
OSC attenuator so that the output level at the TP8,
TP9 becomes 0dB (16mV). Record and play back
the 1kHz and 10kHz signals and adjust SFRs so
that the output of the 10kHz signals becomes 0dB
± 0.5dB with respect to that of the 1kHz signal.
13. REC/PB Sensitivity Check (DECK 2)
Settings : • Test tape : TTA–602
• Test point : TP8 (Lch), TP9 (Rch)
• Input signal : 1kHz (LINE IN)
Method : Apply a 1kHz signal and REC mode. Then adjust
OSC attenuator so that the output level at TP8,
TP9 becomes 0dB (160mV). Record and play
back the 1kHz signals and check that the output is
0dB ± 3.5dB.
< FRONT SECTION >
14. MICON OSC Adjustment
Settings : • Test point : TP7 (O-KSCAN) and D-GND
• Adjustment location : L101
Method : Pull out AC plug, then insert AC plug again with
pressing of TUNER / BAND function key and
POWER key. Adjust L101 so that the frequency
across the test point is 208.80Hz ± 0.21Hz or
4.78ms ~ 4.79ms.
– 35 –
D-GND
9
9
SFR352 (Rch)