JVC KD-AVX1 service manual Chroma, Monitor adjustment

Page 37

4.6.9 Monitor adjustment

When adjusting, switch on the main unit and insert a test disc (VT-501). And play the test disc and pause it. (Exit for VCO FREE-RUN adjustment)

R/W CHROMA 1

1.Set the service mode 4.

2.Exchanging it operate a menu of a service mode with the [UP] button and [DOWN] button.

3.Change data with the [B.SKIP]/[F.SKIP] buttons.

4.Write data with a [OK] button.

When performing the VCO FREE-RUN N adjustment, set the NTSC mode (Service mode 3Service mode DVD NTSC/PAL) and turn the input into the no input. Connect the frequency counter to the point (TP661 or TP681-GND) on the panel board and set the frequency into 15.62 0.01 (kHz).

When performing the VCO FREE-RUN P adjustment, set the PAL mode (Service mode 3Service mode DVD NTSC/PAL) and turn the input into the no input. Connect the frequency counter to the point (TP661 or TP681-GND) on the panel board and set the frequency into 15.73 0.01 (kHz).

Indication

Minimum value

Maximum value

Initial value

Production jig initial value

Reference register value

 

 

 

 

 

 

 

 

 

 

COM AMPLITUDE

0x00

0xFF

0x80

0x80

0x80

Fix

 

BRIGHT GAIN

0x00

0xFF

0x80

0x80

0x80

Fix

 

COLOR GAIN N

0x00

0xFF

0x80

0x5F

0x60

Adjust

 

COLOR GAIN P

0x00

0xFF

0x80

0x62

0x62

Adjust

 

TINT N

0x00

0xFF

0x80

0x82

0x6D

Adjust

 

TINT P

0x00

0xFF

0x80

0x80

0x80

Adjust

 

BLACK LIMITER

0x00

0x7F

0x40

0x5E

0x5E

Fix

 

BRIGHT

0x00

0xFF

0x80

0xA3

0xA3

Adjust

 

APERTURE

0x00

0x7F

0x40

0x40

0x40

Fix

 

R SUB BRIGHT

0x00

0xFF

0x80

0x88

0x88

Adjust

 

B SUB BRIGHT

0x00

0xFF

0x80

0x88

0x89

Adjust

 

W PEAK LIMITER

0x00

0x7F

0x40

0x7F

0x7F

Fix

 

GAMMA1

0x00

0xFF

0x80

0x80

0x80

Fix

 

GAMMA2

0x00

0xFF

0x80

0xFF

0xFF

Fix

 

CONTRAST

0x00

0xFF

0x80

0x64

0x65

Adjust

 

R SUB CONTRAST

0x00

0xFF

0x80

0x74

0x71

Adjust

 

B SUB CONTRAST

0x00

0xFF

0x80

0x78

0x74

Adjust

 

VCO FREE RUN N

0x00

0xFF

0x80

0x8C

0x8F

Adjust

15.62 kHz

VCO FREE RUN P

0x00

0xFF

0x80

0x89

0x8B

Adjust

15.73 kHz

PLL STOP POS

0x00

0x0F

0x00

0x08

0x08

Fix

 

V POSITION

0x00

0x07

0x00

0x02

0x02

Fix

 

H POSITION

0x00

0x1F

0x00

0x1F

0x1F

Fix

 

PWM FREQUENCY

0x00

0x0F

0x08

0x08

0x08

Fix

 

BRST CLN PLS POS

0x00

0x07

0x00

0x03

0x03

Fix

 

PWM DUTY

0x00

0xFF

0x80

0xFF

0xFF

Fix

 

COM DC

0x00

0xFF

0x80

0x80

0x80

Fix

 

DC OUTPUT

0x00

0xFF

0x80

0x65

0x43

Adjust

 

R/W CHROMA 2

1.Set the service mode 4.

2.Exchanging it operate a menu of a service mode with the [UP] button and [DOWN] button.

3.Change data with the [B.SKIP]/[F.SKIP] buttons.

4.Write data with a [OK] button.

Indication

Minimum value

Maximum value

Initial value

Production jig initial value

Reference register value

 

 

 

 

 

 

 

 

H POSITION

0x00

0x1F

0x10

0x12

0x13

Adjust

V POSITION

0x00

0x0F

0x08

0x08

0x08

Adjust

HDO POSITION

0x00

0x1F

0x00

0x02

0x02

Fix

BRIGHT

0x00

0x7F

0x40

0x4D

0x4E

Adjust

R BRIGHT

0x00

0x7F

0x40

0x3E

0x3E

Adjust

B BRIGHT

0x00

0x7F

0x40

0x40

0x41

Adjust

COMLEVEL M

0x00

0x1F

0x10

0x09

0x08

Adjust

COMLEVEL E

0x00

0x1F

0x10

0x10

0x10

Fix

COMDC M

0x00

0x3F

0x29

0x33

0x31

Adjust

COMDC E

0x00

0x3F

0x32

0x32

0x32

Fix

VCO N

0x00

0xFF

0x80

0x70

0x61

Adjust

VCO P

0x00

0xFF

0x80

0x76

0x69

Adjust

(No.MA165)1-37

Image 37
Contents KD-AVX1 For Northern America version SpecificationPAL For Europe versionAudio Amplifier Section For Asia & Australia versionSection Precautions Grounding to prevent damage by static electricity Preventing static electricityHandling the traverse unit optical pickup Important for laser products Reproduction and Position of LabelsSection Specific Service Instructions Removing the side heat sink See Reference Main body section Removing the panel assembly SeeSide heat sink Remove the panel assembly and side heat sink Removing the top chassis assembly See Figs.3 toRemoving the DVD mechanism assembly See Figs.8 Removing the front chassis assembly SeeRemoving the front bracket assembly See Removing the loading unit assembly SeeCN962 Front bracket assembly Removing the main sub board SeeDetach lever Connector cover Removing the connector board See Figs.13 toRemoving the main board See Figs.16 Removing the rear bracket See Removing the panel switch board SeeRear heat sink Rear bracket Removing the panel board See Figs.20 Removing the switch board See Figs.20CN582 Short-circuit points Removing the mechanism section See to Removing the top cover SeeReattaching the clamper unit See to Removing the clamper unit See toClamper unit Clamper spring Notch 20 No.MA165 Removing the front unit See to Removing the loading arm assembly See Removing the rod LR/roller assembly See Removing the DVD pickup assembly See to Removing the spindle motor See Removing the feed motor assembly SeeConnection procedure Test instruments required for adjustmentConnection method Standard measuring conditions Adjustment procedure Adjustment method for jitterD8CA Jitter value conversion tableService mode setting procedure Service mode Standard input/output conditionsOperation procedures Service Mode Ntsc Running Mode Service MODE4 RDS S Mode Monitor S Mode DVD check modeError code tables Mechanism error codeWriting method for micon ROM correction Running modeUpdate method of firm ware Power on Insert the disc which a farm was written in atChroma Monitor adjustment16 PIN Cord Diagram for E version Section TroubleshootingNo.MA1651-39 16 PIN Cord Diagram for A, J, U, UN, UT versionVPT Parts List Exploded view of general assembly and parts list 133 131 132 General Assembly Panel Assy DVD mechanism assembly and parts list DVD mechanism Thrust Spring QYSPSFT2040ZA TAP Screw Electrical parts list QERF1HM-225Z Capacitor QERF1HM-104Z Capacitor Part Name Description Local R231 NRSA63J-104X NRSA63J-2R2X MG Resistor Panel board NDC31HJ-2R0X Capacitor 16W J R601 NRSA63J-121X Connector board NEAF0GM-227X Capacitor SW4 Packing materials and accessories parts list Packing and Accessories Schematic Diagrams Safety precaution M O Block diagram Version Main amplifier section Standard schematic diagramsSheet GDC-R Panel-A sectionS456 MA2SV03-X Panel-B sectionSheet Sheet Connecting sectionSheet Tubuyaki DVD servo control sectionTo CN965 Sheet Main board Printed circuit boardsReverse side Panel board CN521 R483 C475 R482 C474 R481 R480 C470 C485 L472 IC585 Connector board M O Front end board IC301 No.MA165SCH