JVC HR-XVC28BUC, Service Manual

Page: 15 / 149

(No.YD052)1-15
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
: 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 "TRACKING + and -" button at the
same time on the remote control 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 "TR/-" to adjust the tracking manually.
Mechanism
compatibility
adjustment
Electrical
adjustment
Roller driver
---
Jig RCU
---
Back tension cassette gauge
---
Alignment tape(MHP)
---
Alignment tape(MHP-L)
α´´»® ¼®·ª»®
ÐÌËçìððî
Þ¿½µ ¬»²-·±² ½¿--»¬¬» ¹¿«¹»
ÐËÖìèðéêóî
Ö·¹ ÎÝË
ÐÌËçìðîíÞ
ß´·¹²³»²¬ ¬¿°»
øÍÐô -¬¿·®-¬»°ô ÒÌÍÝ÷
ÓØÐ
ß´·¹²³»²¬ ¬¿°»
øÛÐô -¬¿·®-¬»°ô ÒÌÍÝ÷
ÓØÐóÔ
ÜÊÜ ¬»-¬ ¼·-½
ÊÌóëðï
ÝÜóÜß ¬»-¬ ¼·-½
ÝÌÍóïððð
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
ɸ·¬»øéëû÷
ïðð ×ÎÛ
ìð ×ÎÛ
ر®·¦±²¬¿´ -§²½
Ï ×
ïÊ
ɸ·¬»øïððû÷
Ç
»
´´
±
©
Ý
§
¿
²
Ù
®»
»
²
Ó
¿
¹
»
²
¬¿
Î
»
¼
Þ
´«
»
Þ«®-¬
ìð ×ÎÛ
É
¸
·¬
»
Ç
»
´´
±
©
Ý
§
¿
²
Ù
®»
»
²
Ó
¿
¹
»
²
¬¿
Î
»
¼
Þ
´«
»
Ï × Þ´¿½µ
ɸ·¬»
ïððû
øéëû÷
ݱ´±®ø½±´±«®÷ ¾¿® -·¹²¿´ ÅÒÌÍÝà ݱ´±®ø½±´±«®÷ ¾¿® °¿¬¬»®² ÅÒÌÍÝÃ
×Ò×Ì×ßÔ ÓÑÜÛ
ÜßÌß ÝÑÜÛ
ÝËÍÌÑÓ ÝÑÜÛ
ìíæ ß
ÝÑÜÛ
ÅÜ¿¬¿ ¬®¿²-³·¬¬·²¹ ³»¬¸±¼Ã
Ü»°®»-- ¬¸» þ þø í ÷ ¾«¬¬±²
¿º¬»® ¬¸» ¼¿¬¿ ½±¼» ·- -»¬ò
Ö·¹ ÎÝË