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Pin No.
44 45 46 47 48
Pin Name
HI-SP L POWER ON DSL 1 DSL ON BS MODE IN
I/O
O O O O O H : HI-SP L level H : POWER ON
Description
L : HI-SP H level L : POWER OFF
Output ON when in DSL 1 mode. (Not used) Output ON when in DSL ON mode. (Not used) H : Continues playback. BS enable L : Auto reverse playback. BS disable
ADJUSTMENT
1. Tape Speed Adjustment Settings : � Test tape : TTA � 100 (Tape center) � Test point : Phones Jack (J101) � Adjustment location : SFR301 � Dolby : OFF � DSL : OFF � Tape selector : NORMAL(AUTO) � Volume : Non � clip (MAX � 10 dB down) Method : Play back the test tape and adjust SFR301 so that the frequency becomes 3015 Hz ± 10 Hz. Then confirm WOW is less than 0.50%. TTA � 200 TP1(LCH), TP2(RCH), OFF NORMAL(AUTO) OFF MIN Soldered patterns �~ �
Procedure : Short the patterns via solder as shown in the table so the Dolby NR level is 32 mV ± 1.0 dB. Adjust so the specifications are satisfied in both the forward and reverse directions. Connect 10mF/16V coupling capacitors between test points and test equipment (connect the positive terminals to the test points). SOLDER PATTERN �~ � SOLDER POINT INCREASE LEVEL � only + 0.8 dB � only + 1.6 dB � and � + 2.3 dB � only + 0.8 dB � only + 1.6 dB � and � + 2.3 dB
