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Now downloading free:hitachi vt-f641eukn

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VCR, VHS, tape drives service manuals and repair information

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File name:HiVTF641.part2.rar
Size:1821 kB
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Mfg:hitachi
Model:vt-f641eukn 🔎 vtf641eukn
Original:vt-f641eukn 🔎
Descr:hitachi vcr vt-f641/vt-m610/vt-m631
Group:Electronics > Consumer electronics > Video recorders VCR
Uploaded:20-11-2004
User:tsgunnell
Multipart: 0  1

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File name HiVTF641.pdf

HITACHI VT F641 EUKN General Information Also Covers VT M610 EUK, VT M631 EUK Matrix Item See Model Book 5 5 4 4 Deck Exploded Parts View ... Paolina Mono Deck Parts List ... Paolina Mono Mechanical Adjustments ... Turbo Mechanism Mechanical Alignments ... Turbo Mechanism 1 Service Modes 1. Special functions Erasing the EEPROM - Disconnect from mains - Push and hold down the Standby key, reconnect to mains and keep the Standby key depressed for a further 3 sec. All EEPROM data will then be erased and initialised (timer and transmitter channels). The internal processor RAM will also be erased, but the option codes, deck parameters and adjustment values are maintained. After changing the EEPROM or MOBO the following steps must be carried out: Step 40: Option code input Step 51: Gap position adjustment Step 52: `Studio Picture control' adjustment Step 53: Input of clock correction Step 60: Level adjustment - Stereo (optional) Step 61: Channel separation adjustment Stereo (optional) Step 62: Adjustment of Audio Linear Playback Level (optional) Step 99: Clock frequency output Video head cleaning With the recorder set to PLAY, the video heads can be cleaned by pressing the PLAY key again for more than 5 sec. The recorder then moves to STOP and the video head cleaning roll is pressed against the running head drum for 10 sec. The recorder automatically returns to PLAY. The display shows: Fig. 8 Fig. 4 Fig. 1 2. Service test program 2.3 Service mode functions 2.1 Introduction The software program for the control, deck and operating microprocessors includes a service test program. It was divided into the following steps, with the following `modes': Step 00: Display of mask version number Step 01: Check of the drive positions Step 02: Display of the deck - error codes Step 03: Deck - sensors and manual tracking Step 04: Display of operating hours counter Step 10: Operation without drive - dummy mode Step 40: Option code input Step 51: Gap position adjustment Step 52: `Studio Picture control' adjustment Step 53: Input of clock correction Step 60: Level adjustment - Stereo (optional) Step 61: Adjustment of channel separation Stereo (optional) Step 62: Adjustment of Audio Linear Playback Level (optional) Step 99: Clock frequency output In the service test program, all drive functions apart from the channel search and channel change mode can be carried out. The program position set before entering the service test program is maintained. 2.2 Activating the service test program Press and hold down the STOP key on the remote control. Then press the PLAY key on the recorder and keep it depressed for at least 5 sec. The STOP key on the remote control may Endurance test In the service test program, the recorder can be endurance tested. F



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