PANASONIC NVHS830B
Instrukcja Serwisowa

PROCEDURES Set the S-VHS SW to ON. / Insert the S-VHS BLANK TAPE. / Input the Video sweep signal (See Fig. E1) to AV3 (S-VIDEO IN) and record it in SP and LP. Press the FF and EJECT Keys simultaneously for 3 seconds. Press the FF and EJECT Keys simultaneously twice. Press the EJECT key for 3 seconds. Press the CH UP and/or CH DOWN key until "11" is displayed on FIP. Insert the Self-recorded tape and playback it. (SP/LP mode) Connect the Oscilloscope to: *CH1....Video Out (TP3021). *CH2....V.FREQ.(TW6002)

FIP DISPLAY

Press the "4" key on the remote controller. (Confirm that TW6002 becomes high(2.5V)). Adjust the Frequency response by pressing the "2"(increase) and/or "8"(decrease) key on the Remote Controller. (See Fig.E2) Store the Adjusted value by pressing the "5" key on the Remote Controller. Release the Service mode by pressing the EJECT and FF keys simultaneously in 6 times until the FIP becomes normal indication.

Fig. E6

3.3.6. VHS VIDEO FREQUENCY RESPONSE ADJUSTMENT

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