JVC AV-1438, AV-14FMT3, AV-14FMG3B, AV-1435EE, AV-1435TEE, AV-14F3 Video / Chroma Circuit Adjustment

Page 22

AV-14F3/AV-1435

AV-1435EE/AV-1435TEE

AV-14FMT3/AV-1438

AV-14FMG3/AV- 14FMG3B

VIDEO / CHROMA CIRCUIT ADJUSTMENT

The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values.

The setting values which adjust the screen to the optimum condition can be different from the initial setting values. Do no t change the initial setting values of the setting items not listed in “ADJUSTMENT”.

 

Item

Measuring

 

 

Test point

 

 

Ad justment part

Description

 

instrument

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ad justment

Signal

 

 

 

 

 

1. CUT OFF (R)

1.Input a black and white signal (colour off).

of WHITE

generator

 

 

 

 

 

 

 

 

CUT OFF (G)

2.Enter the SERVICE MENU.

 

 

 

 

 

 

 

 

 

 

BALANCE

Remote

 

 

 

 

 

 

 

 

CUT OFF (B)

3.Select 2. V/C from the SERVICE MENU, then select 1. CUT OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Low light)

control unit

 

 

 

 

 

 

 

 

 

 

(R), (G) and (B) .

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCREEN VR

4.Set each value to initial setting value with 49 keys of the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[IN HVT]

remote control unit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.Press the 1 key of the remote control unit to show the single

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

horizontal line on screen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.Turn the SCREEN VR fully counter-clockwise, then slowly turn it

 

 

 

 

 

V/C

 

PAL

 

 

 

 

 

clockwise to where one of a red, blue or green colour is faintly

 

 

 

 

 

1. CUTOFF

 

 

 

 

 

 

 

 

visible.

 

 

 

 

 

 

(R) * **

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.Use keys 49 of the remote control unit and adjust the other 2

 

 

 

 

 

 

 

 

 

(G) * **

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(B) * **

 

 

 

 

 

 

colours which except the appeared colour to where the single

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50Hz

 

 

 

 

 

 

 

 

 

horizontal line appears white.

 

 

 

 

/ :SELECT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.Turn the SCREEN VR to where the single horizontal line glows

 

 

 

 

- / + : OPERATE

 

DISP : EXIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

faintly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9.Press the 2 key to turn off the single horizontal line.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10.Press the DISPLAY key twice to return to the normal screen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CUTOFF OFF

 

(H.LINE OFF)

1

 

CUTOFF ON

 

(H.LINE ON)

 

R. CUTOFF( )

4

 

R. DRIVE( )

 

R. CUTOFF( )

7

 

R. DRIVE( )

 

 

R

2

5

8

G

3

6

9

B

G.CUTOFF( ) B. CUTOFF( ) B. DRIVE( )

B. CUTOFF( )

B. DRIVE( )

 

G.CUTOFF(

)

 

 

Ad justment item

 

Variable

Initial setting

 

range

value

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

-128+127

-50

1. CUT OFF

 

G

-128+127

-50

 

 

B

-128+127

-50

Ad justment

Signal

 

2. DRIVE (R)

of WHITE

generator

 

DRIVE (B)

 

 

BALANCE

Remote

 

 

 

 

 

(High light)

control unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V/C

PAL

 

 

 

2. DRIVE

(R) * **

 

 

 

 

50Hz

 

(B) * **

 

 

 

 

 

 

 

 

/

 

:SELECT

 

 

 

- / + : OPERATE

DISP : EXIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.Input a black and white signal (colour off).

2.Enter the SERVICE MENU.

3.Select 2. V/C from the SERVICE MENU.

4.Select 2. DRIVE (R) / (B) with MENU /key, and set each

value to initial setting value with 4 and 7 or 6 and 9 keys of the remote control unit.

5.Use the keys 4 and 7 or 6 and 9 to produce a white screen

6.Press the DISPLAY key twice to return to the nomal screen.

Ad justment item

Variable

Initial setting

range

value

 

 

 

 

 

 

 

 

 

 

2. DRIVE

R

-128+127

+0

B

-128+127

+0

 

22

No. 52026

Image 22
Contents Contents Ents SpecificationsAV-14F3 / AV-1435 AV-14FMT3 / AV-1438 Safety Precautions Features Functions Rear TerminalRemote Control Unit Part Name Main Difference ListModel Name Specific Service Instructions AV-14FMG3/AV- 14FMG3B System CONSTANT-Ⅱ KEY Assignment of Remote Control Unit Service MenuSystem CONSTANT-Ⅰ System CONSTANT-ⅢUser Setting Values Setting of System Constant SETSetting value Setting item Setting contents Setting item Setting valueInitial Setting Value of Service Menu PAL Secam PresetSound System Do Not Adjust Setting item NT SCProcedures Replacement of IC301 if V/C DecoderLocations of Front Panel Buttons and LAM PS Adjustment Items Service AdjustmentsBefore Starting Service Adjustment Measuring Instrument and FixturesBasic Operation of Service Menu KEY Assignment of Remote Control UnitSetup Tour Method of settingC, 3.DEF and 4.VSM Preset Should be OFFService Menu Flow Chart Upperfocus Adjustment LocationsTP-E CRT Earth Wire Braided Assy LowerscreenFocus Adjustment AdjustmentsB1 Power Supply If Circuit AdjustmentAGC Delay PointPoint MatsushitaVideo / Chroma Circuit Adjustment Ad justment Remote Method of adjustment without measuring instrumentSUB Bright SUBColour Ⅱ Method of adjustment using measuring instrumentSUB Generator Oscillo TP-E #CRT TintSocket Secam Control unit BL AdjustTest point Ad justment part Description Remote BL ACKDeflection Circuit Adjustment PositionScurve VSM Preset SettingVER. Scurve TOPPurity Adjustment Purity / Convergence Adjustment# P/C Magnets Static Convergence Adjustment Dynamic Convergence AdjustmentReplacement Steps Replacement of Chip ComponentSoldering Iron No.52026