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ADJUSTMENT <TUNER / DECK / FRONT>
< TUNER SECTION >
1. Clock Frequency Check
Settings : • Test point : TP2 (CLK)
Method : Set to MW 1602kHz and check that the test point is
2052kHz ± 45Hz.
2. MW VT Check
Settings : • Test point : TP1 (VT)
Method : Set to MW 1602kHz, 531kHz and check that the test
point is less than 8.0V (1602kHz) and more than
0.6V (531kHz).
3. LW VT Adjustment
Settings : • Test point : TP1 (VT)
• Adjustment location : L942
Method : Set to LW 144kHz and adjust L942 so that the test point
becomes 1.3V ± 0.05V. Then set to LW 290kHz and
check that the test point is less than 8.0V.
4. FM VT Check
Settings : • Test point : TP1 (VT)
Method : Set to FM 87.5MHz, 108.0MHz and check that the test
point is more than 0.5V (87.5MHz) and less than 8.0V
(108.0MHz).
5. MW Tracking Adjustment
Settings : • Test point : TP8(Lch), TP9(Rch)
• Adjustment location : L951(1/3)
Method : Set to MW 999kHz and adjust L951(1/3) to maximum.
6. LW Tracking Adjustment
Settings : • Test point : TP8 (Lch), TP9 (Rch)
• Adjustment location :
L941 ..........................................................144kHz
TC942 ........................................................290kHz
Method : Set up TC942 to center before adjustment.
Adjust L941 so that the level at 144kHz becomes
maximum. Then adjust TC942 so that the level at
290kHz becomes maximum.
7. FM Tracking Check
Settings : • Test point : TP8(Lch), TP9(Rch)
Method : Set to FM 98.0MHz and check that the test point is less
than 13dBµV.
8. AM IF Adjustment
Settings : • Test point : TP8(Lch), TP9(Rch)
• Adjustment location :
L802 ................................................ 450kHz
9. DC Balance / Mono Distortion Adjustment
Settings : • Test point : TP3, TP4 (DC Balance)
• Adjustment location : L801
• Input level : 60dBµV
Method : Set to FM 98.0MHz and adjust L801 so that the voltage
between TP3 and TP4 becomes 0V ± 300mV with
minimum distortion.
All manuals and user guides at all-guides.com
– 24 –
< DECK SECTION >
10. Tape Speed Adjustment (DECK 1)
Settings : • Test tape : TTA–100
• Test point : TP8(Lch), TP9(Rch)
• Adjustment location : SFR701
Method : Play back the test tape and adjust SFR701 so that the
frequency counter reads 3000Hz ± 5Hz (FWD) and
FWD SPEED ± 45Hz (REV).
11. 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.
Next, perform on REV PLAY mode.
12. 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 0 ± 4dB.
13. 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 110mV ± 3.5dB.
14. REC/PB Frequency Response Check (DECK 1)
Settings : • Test tape : TTA–602
• Test point : TP8(Lch), TP9(Rch)
• Input signal : 1kHz / 8kHz (LINE IN)
Method : Apply a 1kHz signal and REC mode. Then adjust OSC
attenuator so that the output level at the test points
becomes -20VU. Record and play back the 1kHz and
8kHz signals and check that the output of the 8kHz
signals is 0dB ± 5dB with respect to that of the 1kHz
signal.
15. REC/PB Sensitivity Check (DECK 1)
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
0VU. Record and play back the 1kHz signals and check
that the output is -2dB ± 3.5dB.
< FRONT SECTION >
16. u-CON OSC Adjustment
Settings : • Test point : TP5(K-SCAN), GND
• Adjustment location : L101
Method : Insert AC plug while pressing the TUNER function key
and POWER key. Adjust L101 so that the frequency
across the test point is 58.350Hz ± 0.1Hz.
adjustment screw
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