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ORDER NO. VRD9712040B8 Service Hints Video Cassette Recorder Z-MECHANISM CHASSIS C 1998 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death. INTRODUCTION This service hint contains actual repair service result which will allow service personnels to understand and service Z Mechanism, have been got the repair data of Z Mechanism occurred in the market actually. We expect it will help you to provide the quick and accurate repair service to the customers' VTR mounted Z mechanism. REMARKS As mentioned in INTRODUCTION, this service hint have been published by Z Mechanism getting actual repair service data occurred in the market. Therefore, we expect you will send us the similar repair data for any kinds of models with your cooperation in order to publish the useful technical informations like service hint. CONTENTS Z Mechanism phase alignment and checking points ------------------------------------------------- 1 Phenomenon : Cassette tape is not inserted / Tape tangles --------------------------------------- 2 Phenomenon : Cassette tape is not inserted / Cassette tape is ejected ------------------------ 3 Phenomenon : Cassette tape can not ejected / Abnormal sound in FF/REW mode --------- 4 Phenomenon : Tape is not running / Abnormal sound in Playback mode ---------------------- 5 Phenomenon : Cassette tape is not inserted / Loading is not done ------------------------------- 6 Phenomenon : Tape slack (Self-Test Indication Display F05) -------------------------------------- 7 Phenomenon : Cassette tape can not be ejected ------------------------------------------------------ 8 Phenomenon : Blue back in Playback mode (No picture or noisy picture) ---------------------- 9 Phenomenon : A tape is not inserted / Noisy picture in REV mode ------------------------------- 10 Phenomenon : Tape is not running (Capstan does not rotate) ------------------------------------- 11/12 Self-Test Indication Display F05 or H02 Z Mechanism phase alignment and checking points There are 4 phase alignments in Z Mechanism. 3 phase alignments have to be done in Eject position and 1phase alignment has to be done in Cassette d