Adjustment When The Service Panel Assy Is Replaced - Pioneer PDP-4270XA Service Manual

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7.5 ADJUSTMENT WHEN THE SERVICE PANEL ASSY IS REPLACED

When the Panel Assy is replaced with one for service, the following adjustments are required:
Adjustments of Vofs voltage and Vyprst voltage
Enter the reference adjustment values for the Vofs voltage and Vyprst voltage that are written on the label attached to the
panel for service.
Note: Enter the values, using an RS-232C command or the Factory Menu.
(Rear of the Panel)
Using an RS-232C command
Enter a "PFY" command with Factory mode ON.
Convert the adjustment voltage values written on the label attached at the rear of the Panel to an input command, referring to
the conversion chart. (See the next page.)
• Reference adjustment of the Vofs voltage: Ex. "Vofs = 35" → (Check the conversion chart.) Enter "VOF112."
• Reference adjustment of the Vyprst voltage: Ex. "Vyprst = 270 V" → (Check the conversion chart.) Enter "VRP078."
Using the Factory Menu
1 5 10
1 P A N E L F A C T .
5
10
15 P A N E L – 1 A D J ( + )
16
Select the main item "PANEL FACT." by pressing the MUTE key then enter Panel Factory mode by pressing the SET key.
Using the 5/∞ keys, select "PANEL-1 ADJ" then press the SET key to enter the next lower nested layer.
Select "VOL-OFFSET" or "VOL RST P" then enter a command value converted from the voltage value, using the 2/3 keys.
Clearing data on various histories of the Panel, such as those on the hour meter
• It is necessary to clear the data on the hour meter, etc. to match them to the actual driving hours of the Panel.
• It is also necessary to clear the data on SD and PD, because the accumulated power-on time when a shutdown or power-
down occurred is recorded.
Note: Clear the values, using an RS-232C command or the Factory Menu.
There are two types of hour meters. Do not take the MTB hour meter for the hour meter.
Using an RS-232C command
To acquire the accumulated power-on time of the product itself, use the "QS2" of RS-232C command.
1. To clear the data on the hour meter (for the Panel) : CHM
2. To clear the data on the pulse meter
3. To clear the data on the SD history
4. To clear the data on the PD history
Using the Factory Menu
See "7.4 HOW TO CLEAR HISTORY DATA."
5
6
AWU∗∗∗∗
Vofs = 35V Vyprst = 270V
Hour Meter
15 20 25 30 32
V D 1 – 1 1 6 0 1 – N T V – E H B 7
[ 6 0 V S ]
T B L 1 /
: CPM
: CSD
: CPD
6
7
Space H
1 5 10
1 P A N E L F A C T .
P A N E L – 1 A D J
5
10
V O L R S T P < = >
15
16
PDP-427XD
7
8
AWU∗∗∗∗
Vofs = 35V Vyprst = 270V
Hour Meter 1520 H
Write in the value for the hour
meter when the Panel is
replaced (ex. 1520H).
15 20 25 30
V D 1 – 1 1 6 0 1 – N T V – E H B 7
[ 6 0 V S ]
T B L 1 /
: 0 5 8
8
A
B
32
C
D
E
F
113