NEC DTA-14V4THS, Service Manual, Page: 5 / 55

Microcontroller configuration : Service mode
To switch the TV set into service mode please see instruction below.
Method
1 - Select pr. number 91
2 - Adjust sharpness to minimum and exit all menu.
3 - Quickly press the key sequence :
RED - GREEN - menu
4 - List of service manual item
To exit SERVICE menu press menu key or Std By key.
In Service Mode press " OK " to the microcontroller i.e. the I2C bus is free and the set can be controlled by external
equipment.
Press "
OK " again to allow the microcontroller to control the set again
Method of change from DW REMOCON KEY CODE to NEC.
1. Select pr. number 91
2. Adjust sharpness to minimum and exit off menu.
3. Press volume
Key 3times and volume Key 3times on front local key-board.
When changed NEW EEPROM(I702), Remocon key code was changed Daewoo.
In order to change NEC Remocon key code, do above procedure.
TV set Alignment
1 - G2 alignment
- Set TV in NORMAL I mode
- TV in AV mode without video signal ? Black screen.
- TV preset with WP Red, WP Green and WP Blue equal to 32.
- TV preset with Black R, Black G equal to 8.
- Adjust screen volume ( on FBT ) such that the highest cathode cut-off voltage measured on CRT board, is Vcut-
off 5V
2 - White balance
- Select a dark picture and adjust Black G and Black R to the desired colour temperature.
- Select a bright picture and adjust WP Red, WP Green, WP Blue to the desired colour temperature.
4
ALIGNMENT INSTRUCTIONS
Screen size Vcut-off
14" 115V
20" & 21" 125V
No Item
1 AGC
2 Black R
3 Black G
4 WP Red
5 WP Green
6 WP Blue
7 H Shift
8 V Slope
9 V Amp
10 S Correct
11 V Shift
12 CH Lock
13 MAX Vol
14 AV Start
15 Key Lock
16 PSNS Mode