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1-10 (No.YD006)
SECTION 4
ADJUSTMENT
4.1 Before adjustment
4.1.1 Precaution
The adjustments of this unit include the mechanism com-
patibility and electrical adjustments. During the perfor-
mance of this work, be sure to observe the precautions for
each type of adjustment.
If there is a reference to a signal input method in the signal
column of the adjustment chart, “Ext. S-input” means the
Y/C separated video signal and “Ext. input” means the
composite video signal input.
Unless otherwise specified, all measuring points and
adjustment parts are located on the Main board.
4.1.2 Required test equipments
Color (colour) television or monitor
Oscilloscope: wide-band, dual-trace, triggered delayed sweep
Signal generator: RF / IF sweep / marker
Signal generator: stairstep, color (colour) bar [NTSC]
Recording tape
Digit-key remote controller(provided)
4.1.3 Required adjustment tools
z
: Used
--- : Not used
4.1.4 Color (colour) bar signal,Color (colour) bar pattern
4.1.5 Switch settings
When adjusting this unit, set the VCR mode and switches
as described below.
When using the Jig RCU, it is required to set the VCR to the
Jig RCU mode (the mode in which codes from the Jig RCU can
be received). (See "section 2 SPECIFIC SERVICE INSTRUC-
TIONS".)
Fig.4-1 Jig RCU [PTU94023B]
Set the switches as shown below unless otherwise specified
on the relevant adjustment chart. The switches that are not list-
ed below can be set as desired.
If the VCR is not equipped with the functions detailed below,
setup is not required.
4.1.6 Manual tracking mode (Auto tracking ON/OFF) set-
ting
(1) In order to set to the manual tracking mode during tape
playback, press the “SP/EP(LP)”button on the remote con-
trol unit.
Each press of the button switches the auto tracking ON
or OFF.
When the manual tracking mode is set, the tracking is
placed at the center position.
(2) Press “channel +/-” to adjust the tracking manually.
4.1.7 EVR Adjustment
Some of the electrical adjustments require the adjustment per-
formed by the EVR system. The main unit have EEPROMs for
storing the EVR adjustment data and user setups.
Notes:
In the EVR adjustment mode, the value is varied with the
channel buttons (+, -). The adjusted data is stored when
the setting mode changes (from PB to STOP, when the
tape speed is changed, etc.). Take care to identify the
current mode of each adjustment item when making an
adjustment.
When changing the address setting in the EVR adjust-
ment mode, use the Jig RCU or the remote controller
having numeric keypad with which a numeric code can
be directly input.
The remote control code of the Jig RCU corresponds to
each of the digit keys on the remote controller as fol-
lows.
Mechanism
compatibility
adjustment
Electrical
adjustment
Roller driver
z ---
Jig RCU --- z
Back tension cassette gauge z ---
Alignment tape(MHP) z ---
Alignment tape(MHP-L) zz
Roller driver
PTU94002
Back tension cassette gauge
PUJ48076-2
Jig RCU
PTU94023B
Alignment tape
(SP, stairstep, NTSC)
MHP
Alignment tape
(EP, stairstep, NTSC)
MHP-L
White(75%)
100 IRE
40 IRE
Horizontal sync
QI
1V
White(100%)
Yellow
Cyan
Green
Magenta
Red
Blue
Burst
40 IRE
White
Yellow
Cyan
Green
Magenta
Red
Blue
Q I Black
White
100%
(75%)
Color(colour) bar signal [NTSC]
Color(colour) bar pattern [NTSC]
AUTO PICTURE/VIDEO CALIBRATION/
B.E.S.T./D.S.P.C.
OFF
PICTURE CONTROL/SMART PICTURE NORMAL/NATURAL
VIDEO STABILIZER OFF
TBC ON
Digital 3R ON
VIDEO NAVIGATION/TAPE MANAGER OFF
BLUE BACK OFF
INITIAL MODE
DATA CODE
CUSTOM CODE
43: A CODE
[Data transmitting method]
Depress the " "( 3 ) button
after the data code is set.
Jig RCU
10


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