Automatic Pg Phase Adjustment; Manual Pg Phase Adjustment - Sony Digital Betacam DVW-707 Maintenance Manual

6-3. Servo System Adjustment

6-3-2. Automatic PG Phase Adjustment

Preparation
. S1-1, S1-2
(UDR-9 board)
. S2-1, S2-2
(UDR-9 board)
. S4 (HN-260 board)
. S1-1 (HN-260 board)
. S1-2 (HN-260 board)
. Remove the connector that is connected to the slip ring.
Connect the connector of the harness end to the CN9
connector of the HN-260 board.
Adjustment Procedure
1. Turn on the power switch.
2. 1RV1 (HN-260 board)
3. Press S3 (HN-260 board) twice (within a second/
pressing). Check that D11 (HN-260 board) turns on.
4. Insert the alignment tape (ZR2-1/1P) and reproduce
the 4 MHz signal (TIME : 00 : 00 : 00 to 14 : 59 : 29).
n
Do not reproduce the 15 minute segment and later of
the ZR2-1/1P alignment tape.
5. Press S2 (HN-260 board) for one second and longer,
and remove your hand from S2. The automatic PG
phase adjustment mode starts. (The automatic PG
phase adjustment takes several seconds.)
. PG phase adjustment
6. When the automatic PG phase adjustment ends with
success, the alignment tape is automatically ejected.
(Wait another 10 seconds or longer before turning off
the main power.)
When the automatic PG phase adjustment ends with fail,
the VTR enters the STOP mode. Then repeat the automat-
ic PG phase adjustment from step 1 to step 3 once again.
If the automatic PG phase adjustment still ends with fail,
perform the MANUAL PG phase adjustment as described
in the subsequent paragraph. (Refer to Section 6-3-3.)
Setting upon Completion of Adjustment
. S1-1, S1-2 (UDR-9 board)
. S2-1, S2-2 (UDR-9 board)
. S4 (HN-260 board)
. S1-1 (HN-260 board)
. S1-2 (HN-260 board)
. Re-connect the connectors to the original connections.
6-4
TEST (ON)
(Default setting : REC (OFF))
TEST (ON)
(Default setting : REC (OFF))
TEST (Default setting : REC )
ON (Default setting : OFF)
OFF (Default setting : OFF)
Turn it fully clockwise.
(MIN)
REC (OFF)
REC (OFF)
REC
OFF
OFF

6-3-3. MANUAL PG Phase Adjustment

Note
Perform the MANUAL PG Phase Adjustment only when
Section "6-3-2. Automatic PG Phase Adjustment" does not
end with success by all means.
Preparation
. S1-1, S1-2
(UDR-9 board)
. S2-1, S2-2
(UDR-9 board)
. S4 (HN-260 board)
. S1-1 (HN-260 board)
. S1-2 (HN-260 board)
. Connect the 8-pin connector of the TP tool for tape path
adjustment to CN7 connector on the HN-260 board.
. Connect the 5-pin connector of the TP tool for tape path
adjustment to CN3 connector on the CTL-10 board.
. Remove the connector that is connected to the slip ring.
Connect the connector of the harness end to the CN9
connector of the HN-260 board.
. Connect an oscilloscope to the TP tool as follows:
CH-1 : RECRF A
CH-2 : PGADJREF
TRIG : RECRFCF
Adjustment Procedure
1. Turn on the power switch.
2. Press S3 (HN-260 board) twice (within a second/
pressing). Check that D11 (HN-260 board) turns on.
3. Insert the alignment tape (ZR2-1/1P) and reproduce
the 4 MHz signal (TIME: 00:00:00 to 14:59:29).
n
Do not reproduce the 15 minute segment and later of
the ZR2-1/1P alignment tape.
4. Measuring equipment : Oscilloscope
Measurement point :
Adjustment control :
Specifications :
CH-1
A
CH-2
CH-1=0.5 mV
CH-2=5 V
TEST (ON)
(Default setting : REC (OFF))
TEST (ON)
(Default setting : REC (OFF))
TEST (Default setting : REC )
ON (Default setting : OFF)
OFF (Default setting : OFF)
TP tool board for tape path
adjustment
CH-1 : RECRF A
CH-2 : PGADJREF
1RV1 (HN-260 board)
A=4.2 0.5 usec
TIME=2 msec
DVW-790WS/709WS/707
DVW-790WSP/709WSP/707P P2V1