Electrical Alignment Overview; Notes On Electrical Alignment; Outline Of Electrical Alignment - Sony DNW-A100 Maintenance Manual

Explains the general information for the electrical alignments of Sections 3 and 4.

2-1. Notes on Electrical Alignment

. Be sure to adjust each block in order unless any instructions are provided.
. Never touch (or turn) the adjustment part carelessly.
. Do not execute automatic adjustment carelessly, and do not change adjustment data carelessly.
If executed or changed carelessly, turn off the power of the VTR or execute "ALL DATA PREVIOUS"
in each NV-RAM control menu so as not to save the data.
n
NV-RAM control menu for the servo system have no function "ALL DATA PREVIOUS".
If executed carelessly the automatic adjustment, turn off the power of the VTR.
. For details on the maintenance mode, refer to Section 4 of the maintenance manual Part 1.
. Before beginning adjustment, it is recommended to make a copy of check sheets given in the mainte-
nance manual Part 1 "Appendix B" and write down setup conditions such as switches' setting in the
check sheets.
If setup conditions are noted, the settings can be returned easily to its original condition after finishing
adjustment.

2-2. Outline of Electrical Alignment

In Sections 3 and 4 explain the all electrical adjustment to each block (include the optional boards).
Block Reference
Power supply unit Section 3-1
Search dial Section 3-2
Demagnetization head Section 3-3
Servo Section 3-4
RF Section 3-5
Analog audio Section 3-6
Video Section 3-7
Analog Betacam video Section 3-8
Video remote control Section 3-9
SDI/SDTI Section 3-10
Time code Section 3-11
Composite video input Section 4-1
Component video input Section 4-3
SDTI input Section 4-2
Digital audio Section 4-4
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
Section 2

Electrical Alignment Overview

Contents
Output voltage check/adjustment of power supply unit
Search dial pulse duty adjustment
Demagnetization head driving voltage adjustment for VTR
Servo system alignment for VTR
RF system alignment for VTR
Adjustments of Analog audio input/output line and Analog Betacam LAU PB
line
Adjustments of Video reference signal, Video process, and Analog video
output
Analog Betacam video PB system alignment for VTR
Remote control offset adjustment
Free-running VCO adjustment of Encoder/Decoder for SDI input/output and
SDTI output
Time code system adjustment/check for VTR
Electrical adjustment for BKDW-505/506
Electrical adjustment for BKNW-104
Electrical adjustment for BKNW-103
Electrical adjustment for BKNW-105
2-1