Electrical Adjustment - Aiwa XR-M88 Service Manual

ELECTRICAL ADJUSTMENT

TAPE C.B
< DECK SECTION >
1. Record/Playback Frequency Response Characteristics Adjustment
Adjustment conditions
Settings: • Test tape: TTA-602
• Test point: LINE OUT (J701)
• Input signal: 1kHz/10kHz, AUX IN (J501)
• Adjustment locations: FORWARD direction ..... SFR351(Lch), SFR352 (Rch)
• Adjustment locations: REVERSE direction ....... SFR451 (Lch), SFR452 (Rch)
* Adjustment can be performed from the bottom of the cabinet.
Method: 1) Input the 1kHz signal and adjust the input signal level for -20 dB.
2) Set the XR-M88 into the record mode and record the 1kHz and 10kHz signals alternately.
3) Play back the segment that is recorded in step 2) and adjust SFR351 and SFR352 so that both the
1kHz and 10kHz signals have the same level within 0 dB +3/-4dB.
4) Perform the same adjustment by adjusting SFR451 and SFR452 in the REVERSE mode in the
same way.
SFR351
SFR451
SFR352
SFR452
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IC301