Hitachi C28W40TN, Service Manual

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34
Test Point ID Net Name Function
A137 SD1_1 Second 4 bit output data bit 1 link through to FEC
A136 SD0_3 First 4 bit output data 3 link through to FEC
A135 SD0_2 First 4 bit output data 2 link through to FEC
A134 SD0_1 First 4 bit output data 1 link through to FEC
A154 SD0_3 First 4 bit output data 3
A153 SD0_2 First 4 bit output data 2
A152 SD0_1 First 4 bit output data 1
A163 STARTOUT Soft decision start out from OFDM
A171 DVOUT_LP Data valid second 4 bit outputs
A151 DVOUT Data valid first 4 bit outputs
TP817 STRT780 Unused Soft decision start out from OFDM
TP818 DVLP Unused data valid second 4 bit outputs
TP819 MUX-OUT-26 MUX input bus bit 26 (test purposes only)
TP820 MUX-OUT-25 MUX input bus bit 25 (test purposes only)
TP821 MUX-OUT-24 MUX input bus bit 24 (test purposes only)
TP822 MUX-OUT-23 MUX input bus bit 23 (test purposes only)
TP823 MUX-OUT-22 MUX input bus bit 22 (test purposes only)
TP824 MUX-OUT-21 MUX input bus bit 21 (test purposes only)
TP825 MUX-OUT-20 MUX input bus bit 20 (test purposes only)
TP826 MUX-OUT-19 MUX input bus bit 19 (test purposes only)
TP827 MUX-OUT-18 MUX input bus bit 18 (test purposes only)
TP828 MUX-OUT-17 MUX input bus bit 17 (test purposes only)
TP829 MUX-OUT-16 MUX input bus bit 16 (test purposes only)
TP830 MUX-OUT-15 MUX input bus bit 15 (test purposes only)
TP831 MUX-OUT-14 MUX input bus bit 14 (test purposes only)
TP832 MUX-OUT-13 MUX input bus bit 13 (test purposes only)
TP833 MUX-OUT-12 MUX input bus bit 12 (test purposes only)
TP834 MUX-OUT-11 MUX input bus bit 11 (test purposes only)
TP835 MUX-OUT-10 MUX input bus bit 10 (test purposes only)
TP836 MUX-OUT-9 MUX input bus bit 9 (test purposes only)
TP837 MUX-OUT-8 MUX input bus bit 8 (test purposes only)
TP838 MUX-OUT-7 MUX input bus bit 7 (test purposes only)
TP839 MUX-OUT-6 MUX input bus bit 6 (test purposes only)
TP840 MUX-OUT-5 MUX input bus bit 5 (test purposes only)
TP841 MUX-OUT-4 MUX input bus bit 4 (test purposes only)
TP842 MUX-OUT-3 MUX input bus bit 3 (test purposes only)
TP843 MUX-OUT-2 MUX input bus bit 2 (test purposes only)
TP844 MUX-OUT-1 MUX input bus bit 1 (test purposes only)
TP845 MUX-OUT-0 MUX input bus bit 0 (test purposes only)
A108 INTF-MODE Serial mode select
A110 PLLP2IO VCO control voltage
A109 PLLVDD PLL VDD for internal PLL
A125 PLL filter
A146 DV780
A106 3v3 ADC Filtered 3V3 ADC supply
A055 3v3-COFDM Filtered 3V3 COFDM supply
A066 5v-MODEM Filtered 5V Modem supply
A075 5v Filtered 5V supply
A107 5v Unfiltered 5V supply
A122 3v3 Unfiltered 3V3 supply
A183 3v3 MPEG Filtered 3V3 supply
A022 5v-Tuner-STBY Filtered 5V tuner standby supply
A037 12v Unfiltered 12V supply
A040 12v-MPEG Filtered 12V supply
A123 5v Raw 5V supply to FE board
A122 GNDD Supply ground
A124 30v Raw 30V supply to FE board
A035 12v Raw 12V supply to FE board
A015 5v-Tuner-STBY Raw 5V tuner standby supply
A223 GNDD Supply ground
A227 GNDD Supply ground
A189 SDA I2C data to FEC IC802
A190 SCL I2C clock to FEC IC802
A186 CLK54M 54 MHz clock to FEC
A176 DEMOD-RESET Undelayed reset to Demod IC801
A240 DEMOD-RESET- Delayed reset to Demod/FEC