PIONEER CT-S670D/HYXJ
Service Manual

CT-S670D

(2) Recording Bias and Recording Level Automatic Adjustment

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Press the MODE key, RESET key and the PAUSE key together to enter the into test mode. 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. Press the STOP key to set the level (MS) display to �10� (mechanism operation check mode). Press the XD FLAT key to set the level (MS) display to �80� (automatic adjustment mode). 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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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. Press the RESET key to leave test mode.

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IC751

IC202

TP4 R206

VR102

Counter Display Level (MS) Display

TP3 TP11 R205 R402

IC201

IC101

VR101

L401

IC701

Fig. 6�4 FL Display Position
IC251

MAIN UNIT

Front

Fig. 6�5 Adjustment and Measurement Points

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