SECTION 4
ADJUSTMENT
4.1 Before adjustment4.1.5 Switch settings
When adjusting this unit, set the VCR mode and switches
4.1.1 Precaution
as described below.
? The adjustments of this unit include the mechanism com-
? When using the Jig RCU, it is required to set the VCR to the
patibility and electrical adjustments. During the perfor-
Jig RCU mode (the mode in which codes from the Jig RCU can
mance of this work, be sure to observe the precautions for
be received). (See "section 2 SPECIFIC SERVICE INSTRUC-
each type of adjustment.
TIONS".)
? If there is a reference to a signal input method in the signal
column of the adjustment chart, ?Ext. S-input? means theJig RCU
Y/C separated video signal and ?Ext. input? means the[Data transmitting method]
Depress the " "( 3 ) button
composite video signal input.after the data code is set.
? Unless otherwise specified, all measuring points and
adjustment parts are located on the Main board.INITIAL MODE
CUSTOM CODE
4.1.2 Required test equipments 43: A CODE
? Color (colour) television or monitor DATA CODE
? Oscilloscope: wide-band, dual-trace, triggered delayed sweep
Fig.4-1 Jig RCU [PTU94023B]
? Signal generator: RF / IF sweep / marker
? Set the switches as shown below unless otherwise specified
? Signal generator: stairstep, color (colour) bar [NTSC]
on the relevant adjustment chart. The switches that are not list-
? Recording tape
ed below can be set as desired.
? Digit-key remote controller(provided)
If the VCR is not equipped with the functions detailed below,
4.1.3 Required adjustment toolssetup is not required.
z : Used --- : Not usedAUTO PICTURE/VIDEO CALIBRATION/OFF
B.E.S.T./D.S.P.C.
Mechanism
Electrical
compatibility PICTURE CONTROL/SMART PICTURENORMAL/NATURAL
adjustment
adjustmentVIDEO STABILIZEROFF
TBCON
Roller driver z---
Digital 3RON
Jig RCU ---z
VIDEO NAVIGATION/TAPE MANAGEROFF
Back tension cassette gaugez---BLUE BACK OFF
Alignment tape(MHP)z---
4.1.6 Manual tracking mode (Auto tracking ON/OFF) set-
Alignment tape(MHP-L) zzting
(1) In order to set to the manual tracking mode during tape
playback, press the ?SP/EP(LP)?button on the remote con-
Roller driver Jig RCU Back tension cassette gauge
PTU94002PTU94023BPUJ48076-2trol 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.
Alignment tape Alignment tape
4.1.7 EVR Adjustment(SP, stairstep, NTSC) (EP, stairstep, NTSC)
MHPMHP-LSome 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
4.1.4 Color (colour) bar signal,Color (colour) bar pattern
tape speed is changed, etc.). Take care to identify the
Color(colour) bar signal [NTSC] Color(colour) bar pattern [NTSC]
current mode of each adjustment item when making an
White(100%)(75%)
adjustment.
White(75%)
? When changing the address setting in the EVR adjust-
YellowCyan Green
Magentament mode, use the Jig RCU or the remote controller
Red
WhiteYellowGreenhaving numeric keypad with which a numeric code can100 IREBlueBurstCyanRedBlue
Magenta
1V
40 IREbe directly input.
White40 IRE
Q100%IBlackThe remote control code of the Jig RCU corresponds toQI
each of the digit keys on the remote controller as fol-
Horizontal sync
lows.
1-10 (No.YD006) |
ACEC
JVC
