Service Adjustments; Adjustment Items - JVC AV-27320 Service Manual

AV-27320
AV-27330
AV-27S33

SERVICE ADJUSTMENTS

ADJUSTMENT PREPARATION
1. You can make the necessar y adjustments for this unit with
either the Remote Co ntrol Unit or With the adjustment
tools and parts as given below.
2. Ad justment with the Remote Control Unit is made on the
basis of the initial setting values, however, the new setting
values which set the scr een to its optimum condition may
differ from the initial settings.
3. Make sure that AC power is turned on c orrec tly.
4. Turn on the power for set and test equipment before us e, and
start the adjus tment procedures after waiting at least 30
minutes.
5. Unless otherwis e spec ified, prepare the most s uitable reception
or input signal for adjustment.
6. Never touc h any adjustment parts which are not specified in the
list for this adjustment - variable res istors, transformers,
condensers, etc.
ADJUSTMENT EQUIPMENT
1. DC voltmeter (or digital voltmeter)
2. Oscilloscope
3. Signal generator (Pattern generator) ［ NTSC ］
4. Remote control unit
5. TV audio multiplex signal generator.
6. Frequenc y counter

ADJUSTMENT ITEMS

Ad justment item s
B1 POW ER SUPPLY
MAIN VCO
RF. AGC
FOCUS
V. HEIGHT V. CENTER
H. CENTER
WHITE BALANCE (Low Light)
WHITE BALANCE (High Light)
12
Ad justment item s
SUB BRIGHT
SUB CONTRAST
SUB COLOR
SUB TINT
MTS INPUT LEVEL check
MTS SEPARATION
No.51937
7. Pres etting before adjustment.
Unless otherwis e spec ified in the adjustment instructions,
pres et the following functions with the remote control unit:
User menu preset value
MENU ITEM
PICTURE MODE (VSM)
BASS, TREBLE, BALANCE
HYPER SURROUND
TINT, COLOR,
PICTURE, BRIGHT , DETAIL
MTS
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
DISPLAY
SLEEP
TIMER
VIDEO
STATUS
FUNCTION
/
Although design is different, each remote
NOTE
Controller has the same control function.
PRESET VALUE
DYNAMIC 0
CENTER
OFF
CENTER
STEREO
(RM-C255)
FUNCTION
▼/▲
EXIT