APEX AT2008, AT2002S Schematic

SERVICE MANUAL

SERVICE MODE AND BUS DATA

1. How to Enter the Service Mode with the Remote Control

1) Decrease volume to 0.

2) Press the MUTE button on the remote control and VIDEO button on the TV at the same time.

3) Adjust the TV with the MENU SELECT buttons on the remote control.

4) Press the button on the remote control to quit the Service mode.

2. Bus Data

Item Symbol Description Bus Data
MENU.00

V.POS /50H VERTICAL POSITION /50Hz 39

H.PHSH /50H HORIZONTAL PHASE /50Hz 9

V.SIZE /50H VERTICAL SIZE /50Hz 78

V.POS /60H VERTICAL POSITION /60Hz 32

V.PH /60H HORIZONTAL PHASE /60Hz 12

V.SIZE /60H VERTICAL SIZE /60Hz 93

V.SC VERTICAL S-CORRECTION 4

V,LINE VERTICAL LINE 18

V.SIZE CMP VERTICAL SIZE COMPENSATION 7

MENU.01

SUB.BIGHT SUB-BRIGHT 63

SUB.CONT SUB-CONTRAST 45

V.KILL VERTICAL KILL 0

RF.AGC RF AGC 15

R.BIAS RED BIAS 60

G.BIAS GREEN BIAS 120

B.BIAS BLUE BIAS 60

R.DRIVE RED DRIVE 90

G.DRIVE GREEN DRIVE 15

B.DRIVE BLUE DRIVE 90

MENU.02

H.AFC GAIN HORIZONTAL AFC GAIN 0

H.BLK.L HORIZONTAL BLANKING LEFT 4

H.BLK.R HORIZONTAL BLANKING RIGHT 3

CROS.B/W CROSSHATCH BLACK/WHITE 0

VIDEO.LVL VIDEO LEVEL 4

FM.LEVEL FM LEVEL 16

MENU.03

FM.MUTE FM MUTE 0

AUD.MUTE AUDIO MUIE 0

VIDEO.MUTE VIDEO MUTE 0

SND.TRAP SOUND TRAP 0

MENU.04

SUB.COLOR SUB COLOR 31

SUB.TINT SUB TINT 31

S.SHARP SUB SHARP 32

CORING. CORING GAIN 1

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SERVICE MANUAL

C.EXT EXTERNAL CHROMA 0

C.BYPASS CHROMA BAND-PASS BYPASS 0

C.KILL ON COLOR KILL ON 0

MENU.05

BLANK.DEF BLANK DEFEAT 0

BLK.ST.DEF 0

FBP.BLK.SW FLYBACK PULSES HORIZONTAL BLANKING SWITCH 0

FILT.SYS FILTER SYSTEM SELECT Y/C FILTER MODE 0

VOL.FIL VOLUME FILTER 0

VIF.SYS VIF SYSTEM 0

VIDEO.SW VIDEO SWITCH 0

MENU.06

R/B ANGLE R-Y/B-Y ANGLE 9

GREY MODE GREY MODE 0

V.SETUP VERTICAL SETUP 1

B.GAM.SEL 3

RG.GAM.DEF 1

MENU.07

BRT.ABL.TH BRIGHT ABL THRESHOLD 7

EM.ABL.DEF 0

BRT.ABL.DF BRIGHT ABL DEFEAT 1

MID.STP.DF BRIGHT MID STOP DEFEAT 1

MENU.08

DIGITAL.OSD DIGITAL OSD MODE 0

OSD.CONT OSD CONTRAST CONTROL 1

OSD.H.POS OSD HORIZONTAL POSITION 22

MENU.09

H.FREQ HORIZONTAL FREQUENCY 27

C.KILL.OFF COLOR KILL OFF 0

AUDIO.SW AUDIO SWITCH 0

T.DISBLE TEST MODE SWITCH DISABLE 1

MENU.10

OPT.TV.AV OPTION TV/AV 1

OPT.COLOR OPTION COLOR 0

OPT.V-CHIP OPTION V-CHIP 1

OPT.CCD OPTION CCD 1

OPT.CLOCK OPTION CLOCK 1

OPT.P-ON OPTION P-ON 0

SRCH.SPEED SEARCH SPEED 0

ROM.CORREC ROM CORRECTION 0

Notes:

The data sheet may differ dependent on different models.

The data sheet may differ dependent on different CRTs for the same model.

3. Service Mode Adjustment

1) Sub-brightness

a) Receive colour signals.

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