Pioneer CT-S670D Service Manual page 32

CT-S670D
(2) Recording Bias and Recording Level Automatic Adjustment
1
Press the MODE key, RESET key and the PAUSE key together to enter the into test mode.
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2
Press the MODE key, PAUSE key and the MUTE key together to clear all memory data. At this time, "CLR" is displayed on the
counter.
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3
Press the STOP key to set the level (MS) display to "10" (mechanism operation check mode).
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4
Press the XD FLAT key to set the level (MS) display to "80" (automatic adjustment mode).
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5
When the test tape (STD–632) is inserted and the REC key is pressed, "B" flashes on the counter and bias adjustment is started. When
adjustment is completed correctly, "B" will light steadily, and then "R" will flash and adjustment of the recording level will start. When
the adjustment is completed correctly, "BR" will light to indicate that the adjustment has been completed correctly. When at the time
"B" lights, this indicates a bias adjustment error, and when "R" lights, this indicates a recording level adjustment error. At the time
of an error, the adjustment value is not written to the memory.
Adjustment error: The following causes can be considered.
Recording is not being done.
The adjustment tape is damaged seriously.
There is no adjustment data. The tape is near the tape end.
Circuit trouble (defective contact etc.)
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6
When the STOP key is pressed, automatic adjustment mode is cancelled, the level (MS) display becomes "10" (mechanism operation
check mode), and "TUNE" is displayed on the counter.
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7
Press the RESET key to leave test mode.
Counter Display
Fig. 6–4 FL Display Position
32
Level (MS) Display
TP11
L401
Front
IC202
TP4
R206
TP3
R205
R402
MAIN UNIT
Fig. 6–5 Adjustment and Measurement Points
IC751
VR102
IC201 IC101
VR101
IC701
IC251