The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
Text excerpt from page 1 (click to view)
VL-WD255U
SERVICE MANUAL
S41R8VL-WD255
SERVICE MANUAL LIQUID CRYSTAL DIGITAL CAMCORDER NTSC MODEL VL-WD255U
LIQUID CRYSTAL DIGITAL CAMCORDER
NTSC
MODEL
VL-WD255U
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified be used.
In this Service Manual, only the differences from VL-WD250U/WD450U (SY0N4VL-WD250) are described. Therefore, for the parts which are not described in this Service Manual, refer to the Service Manual for VL-WD250U/WD450U (SY0N4VL-WD250).
CONTENTS
Page 2. SPECIFICATIONS .............................................................................................................................. 2 3. PART NAMES .................................................................................................................................... 3 10.ADJUSTING THE ELECTRICAL CIRCUITS ...................................................................................... 3 14.SCHEMATIC DIAGRAMS .................................................................................................................. 4 15.SEMICONDUCTOR LEAD IDENTIFICATION ................................................................................. 18 16.PRINTED WIRING BOARD ASSEMBLIES ...................................................................................... 19 17.REPLACEMENT PARTS LIST ......................................................................................................... 21 18.PACKING OF THE SET ................................................................................................................... 26
SHARP CORPORATION
This document has been published to be used for after sales service only. The contents are subject to change without notice. 1
