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Service Adjustments with Replacing Memory IC(IC801)
No. Item Range Data Description
88 EQUON 0 ~ 1 0 Enable EQU circuit
89 IFAGC 0 ~ 1 0 Disable IF and RF AGC
90 SVOSW 0 ~ 1 0 Select pin 68 output
91 RFAGC 0 ~ 3F 1A Align RF AGC threshold
92 STRAP 0 ~ 1 1 Select sound trap ON/OFF
93 VIFSY 0 ~ 7 0 Select VIF Freq. 38.0/38.9/39.5/45.75/58.75MHz
94 VLEF 0 ~ 7 7 Align IF video level
95 OMTYP 0 ~ 1 0 Select VIF over modulation function
96 OMSW 0 ~ 1 0 Select VIF over modulation function
97 OMLEV 0 ~ F 8 Adjust over modulation operating point
98 VCOFQ 0 ~ FF 60 Align ES Sample IF VCO Frequency. (MP is adjusted in the wafer line)
98 AMOSW 0 ~ 1 0 Select pin 70 output
100 DEMTC 0 ~ 1 0 Select De-emphasis Time Constant
101 FMGAI 0 ~ 1 0 Select FM Output Level
102 A2SW 0 ~ 1 0 West Germany Output Level
103 SIFSY 0 ~ 3 1 Select 4.5/5.5/6.0/6.5 MHz
104 CHCON 0 ~ 1 0 CH converter measure mode at India
105 FMMUT 0 ~ 1 0 Disable FM output
106 AFTSE 0 ~ 3 2 Select AFT sensitivity 10/13/20/40 [mV/KHz]
107 IFTES 0 ~ 1 0 IF Test mode
108 VCOAD 0 ~ F 8 Fine adjust of IFVCO Free run
109 EWDC 0 ~ 3F 18 Align East/West DC bias
100 EWAMP 0 ~ 3F 0A Align East/West amplitude
111 EWTIL 0 ~ 3F 20 Align East/West Trapezoid
112 EWBOT 0 ~ F 0B Align East/West Bottom corner correction
113 EWTOP 0 ~ F 0A Align East/West Top corner correction
114 EWCSW 0 ~ 1 0 Select control range for Corner correction
115 EWTES 0 ~ 1 0 Select East/West DAC test mode
116 HSCMP 0 ~ 3F 07 Align horizontal size compensation
117 VOLFL 0 ~ 1 0 Enable volume filterl
118 VOL L 0 ~ 7F 21 Customer L-ch volume control
119 AUDSW 0 ~ 1 1 Select audio input signal
120 CLKTS 0 ~ 1 2* Operation CLK test modes
121 SRCNT 0 ~ 1 0* Select surround effect
122 DCCUT 0 ~ 1 2* DC cut test modes
123 MONOM 0 ~ 1 0 Enable mono input mode
124 VOL R 0 ~ 7F 21 Customer R-ch volume control
125 TOATT 0 ~ 1 0* Enable tone attenuator
126 TBOST 0 ~ 1 1* Select Boost/Cut of treble tone control
127 TRGAI 0 ~ 3F 3F Customer treble gain control
128 PEST 0 ~ 1 0 Pseud Stereo
129 BBGOST 0 ~ 1 1* Select Boost/Cut of bass tone control
130 BAGAI 0 ~ 3F 3F Customer bass gain control
131 YFLSY 0 ~ 3 1 Select Y Filter mode
132 CFLSY 0 ~ 3 2 Select C Filter 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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