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Service Adjustments with Replacing Memory IC(IC802)
No. Item Range Data Description
139 VIF AGC VTH HYS OFF 0 ~ 1 0 VIF AGC CURRENT CHANGE FUNCTION HYSTERESIS OFF SWITCH
140 VIF AGC SPEED UP
0 ~ 7
0 VIF AGC SPEED Adj.
141 AUDIO ATT L MONO
0 ~ 7F
7F L Ch Audio output level attenuation
142 SIF OUT MUTE
0 ~ 1
1 AF direct put out ON/OFF (Mute) switch
143 AUDIO ATT (R)
0 ~ 7F
7F R Ch Audio output level attenuation
144 SIF OVER MODE
0 ~ 1
0 SIF OVER modulation detector ON/OFF switch
145 AUDIO SW SEL
0 ~ 1F
0 Audio Switch Selector
146 SECAML PC65 0 ~ 1 0 SECAML’ Phase Comparator Mode Select
147 CONV VCO PULL UP 0 ~ 1 0 SIF CONVERTER VCO PULL UP
148 CONV VCO BETA UP 0 ~ 1 0 SIF CONVERTER VCO Bup
149 SIF MODE 0 ~ 7 1 SIF Frequency selector
150 AVL SEL 0 ~ 1 0 AVL MODE DELECTOR ON/OFF
151 SIF INT 0 ~ 1 1
152 SIF BPF WIDE 0 ~ 3 3 SIF BPF band width selector ( For over mode )
153 SIF PAL 0 ~ 3 0 Switch to improve Sound S/N at PAL signal ON/OFF
154 SIF PAL INV 0 ~ 1 0 Switch to improve Sound S/N at PAL signal ON/OFF
155 SIF BPF TEST 0 ~ 1 0 Color Saturation control (Offset Data of Color) for PAL
156 HI TRAP OFF 0 ~ 1 0 Color Saturation control (Offset Data of Color) for NTSC
157 VIDEO SW LPF 0 ~ 1 0 Color Saturation control (Offset Data of Color) for SECAM
158 VIDEO MUTE
0 ~ 1
0 Luminance signal mute ON/OFF
159 SHARPNESS PRE 0 ~ 1F 13 SHARPNESS PRESHOOT LEVEL Adjustment
160 SHARPNESS OVER 0 ~ 1F 5 SHARPNESS OVERSHOOT LEVEL Adjustment
161 BLK STRETCH OFF 0 ~ 1 0 Black Stretch function ON/OFF switch
162 BLK STRETCH CHARGE 0 ~ 3 1 Charge time constant adjustment for black stretch
163 BLK STRETCH 0 ~ 3 1 Discharge time constant adjustment for black stretch
164 BLK STRTCH GAIN 0 ~ 1 0 Black stretch gain adjustment
165 GAMMA CONTROL 0 ~ 3 3 Luminance gamma threshold control ON/OFF
166 C TRAP ADJ PAL 0 ~ 3 1 Chroma trap for for adjustment PAL
167 C TRAP ADJ NTSC
0 ~ 3
1 Chroma trap for for adjustment NTSC
168 C TRAP OFF
0 ~ 1
0 Chroma trap ON/OFF switch
169 DOUBLE TRAP 0 ~ 1 1 Chroma trap filter for SECAM ON/OFF
170 Y NR TH 0 ~ 3 0 Video Noise Reduction Threshold level change
171 Y NR DEPTH 0 ~ 3 0 Video Noise Reduction Threshold Depth change
172 Y NR ON 0 ~ 1 1 Video Noise Reduction ON
173 Y DL TIME ADJ 0 ~ 7 2 Luminance signal delay time adjustment for PAL
174 Y DL TIME ADJ SECAM 0 ~ 7 3 Luminance signal delay time adjustment for SECAM
175 SECAM KILLER 0 ~ 3 1 SECAM color killer sensitivity threshold adjustment
176 SECAM PLL RST OFF 0 ~ 1 0 SECAM PLL RESET disable
177 SECAM OFF 0 ~ 1 0 SECAM demodulator switch
178 CR DL FINE 0 ~ 1 0 Cr signal delay time adjustment
179 CBCR GAIN UP 0 ~ 1 0 CbCr signal pedestal Gain Switch
180 CBCRPED ADJ ON 0 ~ 1 1 CbCrPED ADJ ON
181 CRPEDESTAL ADJ 0 ~ F 3 Cr signal Pedestal level adjustment
182 CBPEDESTAL ADJ 0 ~ F 4 Cb signal Pedestal level adjustment
183 CB DL FINE
0 ~ 3
0 Cb signal delay time adjustment
184 DL TEST
0 ~ 1
0 1HD TEST MODE
Following table shows the initial values which have been stored in the CPU ROM, and items for the service adjustments.
Service mode adjustments table in CPU ROM
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