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SECTION 3 ADJUSTMENT
The difference point(s) compared with the reference model are as follows.
DELETE
3.3.2 Video circuit 3.3.2.1 3.3.4.1 3.3.4.2 EE Y/PB Y (S-VHS/VHS) LEVEL Colour difference level SECAM burst position 3.3.4 PAL/SECAM converter circuit [EF model]
Adjustment procedure and value are changed.
3.3.1 Servo circuit 3.3.1.1
Signal Mode Equipment Measuring point External trigger Adjustment part Specified value Adjustment tool
Switching point
(A1) (A2) (B) (C) (D1) (D2) (E) (F) (G) (H) � � � � � � � � � � Stairstep signal Alignment tape(LP,stairstep,PAL) [MHPE-L] PB Oscilloscope VIDEO OUT terminal (75 ohm terminated) TP106 (PB. FM) TP111 (D.FF) Jig RCU: Code �5A� 6.5 ± 0.5H Jig RCU [PTU94023B]
(1) Play back the signal (A1) of the alignment tape (A2). (2) Apply the external trigger signal to D.FF (E) to observe the VIDEO OUT waveform and V.PB FM waveform at the measuring points (D1) and (D2). (3) Set the VCR to the manual tracking mode. (4) Adjust tracking so that the V.PB FM waveform becomes maximum. (5) Set the VCR to the Auto adjust mode by transmitting the code (F) from the Jig RCU. When the VCR enters the stop mode, the adjustment is completed. (6) If the VCR enters the eject mode, repeat steps (1) to (5) again. (7) Play back the alignment tape (A2) again, confirm that the switching point is the specified value (G).
Trigger point Switching point V.sync
V. rate
Fig.3-3-1a Switching point
(No.82979)1-5
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