Rf System Alignment (Eq-56 Board); Adjustment Overview - Sony DNW-A100 Maintenance Manual

3-5. RF System Alignment (EQ-56 Board)

3-5-1. Adjustment Overview

3-5. RF System Alignment
(EQ-56 Board)
3-5-1. Adjustment Overview
There are the following in the RF system of the VTR.
. Record system of the Betacam SX format
. Playback system of the Betacam SX format
. Playback system of the Betacam / Betacam SP format
For the RF adjustment for the Betacam SX format (record
and playback), perform the automatic adjustments in the
menu of the maintenance mode.
For the Betacam / Betacam SP format, perform the manu-
ally adjustments in the menu of the maintenance mode.
For the DNW-A100/A50/A45's Betacam / Betacam SP PB
function, be sure to adjust in the 525/60 system.
For the DNW-A100P/A50P/A45P's Betacam / Betacam
SP PB function, be sure to adjust in the 625/50 system.
If differing, should change the video system in the setup
menu ITEM-013 before adjusting. (For the ITEM-013,
refer to Section 7-2-2 of the operation manual.)
n
For detail of each menu in the maintenance mode, refer to
Section 4 of the maintenance manual part 1.
The countermeasures against the malfunction of an
automatic adjustment (an error message "Auto Adjust
Failure" or "Condition NG" will be displayed on the video
monitor) had been described there.
Tools List
To perform the RF system alignment for the VTR, prepare
the following equipment and fixtures.
. Oscilloscope: TEKTRONIX 2465B or equivalent
. Analog composite video monitor
n
This monitor is for menu displaying. Be sure to connect
it to VIDEO OUTPUT COMPOSITE 3 (SUPER)
connector.
. Extension board: EX-377 (Part No. J-6269-810-A)
(for the extension of DM-89 board)
. Cleaning tape:
BCT-5CLN (Sony's standard products)
3-10
. Alignment tapes for DNW-A100/A50/A45:
SR5-1 (Part No. 8-960-075-01),
CR5-1B (Part No. 8-960-096-41), and
CR5-2A (Part No. 8-960-097-44)
. Alignment tapes for DNW-A100P/A50P/A45P:
SR5-1P (Part No. 8-960-075-51),
CR5-1B PS (Part No. 8-960-096-91),
and CR5-2A PS (Part No. 8-960-098-44)
. Recording tape: BCT-SX series (Betacam SX cassette)
(Sony's standard products)
n
For this recording tape, prepare the virgin tape or no
recorded tape that erased using the tape eraser, etc. in
advance.
Adjustment Items
Section Item (Section title) and
Adjustment point
3-5-2 Betacam SX format overall RF system adjustment
For DNW-A100/A100P
A17 : A10-A16 ALL ADJUST
(Automatic adjustments)
For DNW-A50/A45/A50P/A45P
A17 : A11-A16 ALL ADJUST
(Automatic adjustments)
Data save
A1F : NV-RAM CONTROL
3-5-3 Betacam / Betacam SP format PB system
(EQ RF output level) adjustment
METAL Y
A30 : EQ VR : RF GAIN METAL-Y-A
A30 : EQ VR : RF GAIN METAL-Y-B
METAL C
A30 : EQ VR : RF GAIN METAL-C-A
A30 : EQ VR : RF GAIN METAL-C-B
OXIDE C
A30 : EQ VR : RF GAIN OXIDE-C-A
A30 : EQ VR : RF GAIN OXIDE-C-B
OXIDE Y
A30 : EQ VR : RF GAIN OXIDE-Y-A
A30 : EQ VR : RF GAIN OXIDE-Y-B
Data save
A3F : NV-RAM CONTROL
Refer to Section 3-5-4 in order to adjust the recording
current only.
Section Item (Section title) and
Adjustment point
3-5-4 Recording current adjustment
A12 : REC CURRENT
Data save
A1F : NV-RAM CONTROL
Measurement
point
TP100/DM-89
TP300/DM-89
TP300/DM-89
TP100/DM-89
Remarks
(Automatic adjustment)
DNW-A100/A50/A45
DNW-A100P/A50P/A45P