Aiwa XP-MP3 Service Manual page 18

TEST MODE - 2/2
(2) Tracking balance/gain check
Press the PRGM button during playback of disc: The display in the LCD will switch from F-BIAS to T-BAL, T-GAIN, and to
playback time.
Playback time display
(adjustment value is not displayed)
* Caution: Since the adjustment values are determined inside the IC, they will vary depending on the disc:
Only the displayed values will be checked for adjustment.
6. RF Level Check
• Test point: Between RF and VC
• Test disc: TCD-782
• Turn EASS off for measurement.
Play the second track on CD to make sure that the RF waveform is clear and not clipped.
Focus bias
1.2V ± 0.2V
VOLT/DIV: 200mV
TIME/DIV: 0.5µs
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Tracking gain
Tracking bias