How to entering the FACTORY MODE
a) Press the key SW702 on the MAIN PCB or use a remote control with protocol RC5 and system 7.
a1)Remote control reconstruction method.
b) Select the adjustment options pressing the key CH or CH of the remote control or of the television front panel.
c) Adjust the selected option pressing the key VOL or VOL of the remote control or of the television front panel.
c1) VOL - increases registers (MAX.).
c2) VOL - decreases registers (MIN.).
d) To exit the FACTORY MODE, use the key OSD/OUT of the remote control.
Photo credit to www.pergidulu.com
Note: All the adjustment options can be selected directly by the remote control
1. Important recommendations
1.1 Before beginning the adjustments, the TV set should be a pre-heated during at least 15
1.2 The positioning of the TV set should obey the magnetic parameters of South America that it
is -120 vertical mG. In the practice, this is gotten with a relative precision, positioning the TV set with the face (screen) of the CRT pointing to the geographical East.
2. Definitions of the terms
Reg. # Description Name
02 Adjustment of the AGC delay. AGC
03 Adjustment of the vertical slope. VSL
04 Adjustment of the height. VAM
05 Adjustment of the vertical position VSH
06 Adjustment of the center linearity SC
07 Adjustment of the Pin Cushion PW
08 Adjustment of the geometric distortion of the vertical lines in the image corner CP
09 Adjustment of the width EW
10 Adjustment of the horizontal position HSH
11 Adjustment of the geometric trapezoidal distortion in the direction east-west TC
12 Adjustment of the white balance WPR
13 Adjustment of the white balance WPG
14 Adjustment of the white balance WPB
15 Adjustment of cathode amplitude level - CRT (*). CL
16 Adjustment of vertical zoom (the register has to be in 25) VX
17 Adjustment of vertical scroll (the register has to be in 31) VSC
18 Adjustment of the position in the vertical direction of text insertion in the screen in the C.C mode VOT
19 Adjustment of the position in the horizontal direction of text insertion in the screen in the C.C mode TAS
20 Preset of the function C.C (**) OEA
21 Adjustment of the stereo separation. ALW
22 Adjustment of the stereo separation. ALS
23 Adjustment of reference electric current of the stereo decoder TCA
24 Adjustment of the time constant of the AVL circuit ATT
25 Adjustment of audio input level of the stereo decoder LA
26 Adjustment of brightness pattern BRI
27 Adjustment of color pattern COL
28 Adjustment of contrast pattern CON
29 Adjustment of tint pattern HUE
30 Adjustment of sharpness pattern PEA
31 Adjustment of volume pattern VOL
32 Adjustment of balance pattern BAL
33 Adjustment of bass pattern BAS
34 Adjustment of treble pattern TRE
35 Adjustment of subwoofer pattern SWF
36 Luminance delay (*) YDL
96 Option register for of color system definition SYS
97 General options OPT
98 Initialization of EEPROM INI
99 Adjustment of screen VSD
Reference adjustment value
* After replacing EEPROM (IC701), set to the reference adjustment values, and then perform
3. Geometry of the Image
a) Using the PM - 5515 generator, apply the crosshatch pattern with circle.
b) Adjust the following items:
Vertical slope (VSL);
Vertical position (VSH);
Center Linearity (SC);
Horizontal position (HSH)
Adjust the above items, until obtaining the best circle symmetry and positioning, as well as the minor
image geometric distortion.
4. White balance AIWA TV-AR295 Service mode
Note: The cut point doesn’t need adjustment, because it’s automatically made by the IC101.
The white adjustment is already pre-adjusted and incised in the IC101 and, thus, its adjustment is not necessary. Otherwise, if it is necessary to change the temperature of the white pattern, proceed in the following way:
a) Enter into AIWA TV-AR295 Service mode.
b) Select via CH or CH the WPR (12), WPG (13) and WPB (14) functions.
c) Increase or decrease the function via VOL or via VOL respectively.
5. Screen adjustment
a) Select the register 99 (VSD).
b) Press VOL or VOL to access and adjust the screen control localized on the FBT, until the
horizontal line be slightly visible on the screen center.
c) Press CH up or CH down .
6. AGC adjustment
a) Select the register 02 (AGC)
Apply a PHILIPS pattern with 60dBμV of intensity and adjust so that TP AGC or C103 (+)
terminal become 4V.