Section 2
Service Overview
2-1. Notes on Spare Parts2-2. Board Layout
MB-688IO-136
1. Safety Related Components WarningCN-1413
CN-1335
AT-111
Components marked ! are critical to safe operation.
VA-175A
Therefore, specified parts should be used in the case ofAU-231
replacement.DM-110
CN-1336
2. Standardization of Parts
Some repair parts supplied by Sony differ from those
used for the unit. These are because of parts common-
CN-1337
ality and improvement.
Parts list has the present standardized repair parts.AC power unit
AU-236
3. Stock of Parts
Parts marked with Oo� at SP(Supply Code) column of..... AT-111 board
the spare parts list may be not stocked. Therefore, theThis board sends or receives the control data between the
delivery date will be delayed.camera and CCU, and RCP, CNU, and CCU, controls
the input/output signals on each board of this unit, and
4. Units Representationcontrols each tally signal. This board also sends or
The following represented units are changed orreceives the control data to or from the BKP-5973 (CCU
omitted in writing.control panel).
UnitsRepresentation
..... VA-175 board
CapacitanceuFuFThis board produces VBS and RGB signals from the Y,
InductanceuHuHR-Y, and B-Y signals sent from the DM-110 board,
ResistanceZAbbreviationswitches these signals, and outputs them as WF and PIX
TemperaturedCXXX-DEG-Csignals. This board also generates each sync signal and
color bars signal.
5. Destination Representation
The part indicated OFor J/UC/CE� in the spare parts..... AU-231 board
list is used in the unit written below.This board demodulates the MIC RF signal sent from the
camera, modulates a PGM signal, modulates and demod-
For J : The part is used in a unit for Japan.
ulates the INCOM signal and control data between theFor UC: The part is used in a unit for U.S.A. and
Canada.camera and CCU, and switches the INCOM line.
For CE : The part is used in a unit for regions except
the above countries...... DM-110 board
This board demodulates the Y RF signal sent from the
camera to produce a Y signal and demodulates a chroma
signal RF signal to produce R-Y and B-Y signals. This
board also modulates the video signals input to the RET
and PROMPT connectors on the rear panel and sends
them to the camera.
..... AU-236 board
This board inputs and outputs an INCOM signal on the
front panel, displays a tally signal, and turns on and off
the power of this unit and camera.
CCU-550/550P2-1 |
ACEC
