Notes On Replacement Of Circuit Board; Note On Replacement Of Parts; Description On Eeprom (Nv-Ram) Data; Adjustment After Replacement Of Board - Sony Digital HDVS HDC-900 Maintenance Manual

1-7. Notes on Replacement of Circuit
Board

1-7-1. Note on Replacement of Parts

Every electrical part mounted on the mounted circuit
boards used in the CCD unit cannot be replaced.
And every electrical part mounted on the SDI-49 and RX-
28 boards cannot be replaced too. If there is any defective
part, replace the mounted circuit board itself. Refer to
Sections 2-6-1 and 2-6-2 (HDC-900/910) or 3-14-1 and 3-
14-2 (HDC-950/930) for details on replacement.
1-7-2. Description on EEPROM (NV-RAM)
Data
The table below gives the stored data of EEPROM (NV-
RAM) on every printed circuit board.
Board Ref. No. Stored data
AT-130 IC5 * Paint data, Fails
DAD-37 IC6 DAD-37 adjustment data
DPR-154 IC212 DPR-154 adjustment data
RP-114 IC22 RP-114 adjustment data
SG-268 IC101 SG-268 adjustment data
VA-196 IC200 VA-196 adjustment data
VDA-55 IC8 VDA-55 adjustment data
* : NV-RAM
n
The IC listed above cannot be replaced because it is the
EEPROM (NV-RAM) that is storing data inherent in the
board. The part number listed in "Spare Parts" is for
EEPROM (NV-RAM) which is not programmed. If
replacement is needed, consult your Sony representatives.
HDC-900/950 MM

1-7. Notes on Replacement of Circuit Board

1-7-3. Adjustment after Replacement of
Board
When replacing some electrical parts on the circuit board,
or the circuit board itself, be sure to perform the following
adjustments after replacement. If no adjustment item is
listed, no adjustment is required.
HDC-900/910, HDC-950/930
Board/Block For Part
Replacement
AT-130 ——
AU-271 ——
DAD-37 ——
DAP-24 ——
DPR-154 VTR26P OUT
Level Adjustment
DPR-156 ——
DU-104 ——
PA-239 PA-239 Board
Adjustment
RE-181/182/184 ——
RX-28 ——
SDI-49 ——
SG-268 ——
VA-196 VA-196 Board
Adjustment
VDA-55 VTR26P OUT
Level Adjustment
Filter Disk Unit ——
HKC-T950
Board/Block For Part
Replacement
AT-146 ——
AT-147 ——
IF-845 ——
IF-846 ——
RE-202 ——
For Board
Replacement
——
——
——
——
VTR26P OUT
Level Adjustment
——
——
PA-239 Board
Adjustment
——
——
——
——
VA-196 Board
Adjustment
VTR26P OUT
Level Adjustment
Filter Drive
Adjustment
For Board
Replacement
——
——
——
——
——
1-9 (E)