Sanyo PLC-SW30 - Warning Indicator States; Troubleshooting Indicator Lights

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Control Port Functions
1 VDD Power Supply +5V -
2 GP5/T1CKI TMR1_CLK Clock Input I
3 GP4 TXL Power switch signal Low Wattage = L O
4 GP3 RXL Lamp Status Signal I
5 GP2/T0CKI LAMP_PWM APL Level Input I
6 GP1 SCEL Lamp ON/OFF Control Lamp ON = L O
7 GP0 LAMP_ERR Lamp Error Output Lamp Error = H O
8 GND - -
Pin No. Name Function I/O
● Sub CPU (IC1882, PIC12F675) Port Functions
1R Reset input I
2 SCL P_SCK2 IIC BUS SCL I
3SDA P_SDA2 IIC BUS SDA I/O
4 A07 - Not used O
5 A08 - Not used O
6 A09 - Not used O
7A10 - Not used O
8A11 - Not used O
9A12 - Not used O
10 VrefL DAC Lower Reference Voltage input -
11 VrefU1 DAC Upper Reference Voltage input (CH5~CH8) -
12 Vss GND -
13 VrefU2 DAC Upper Reference Voltage input (CH1~CH 4) -
14 A01 R_V1 Video signal reference voltage (-) R O
15 A02 R_V2 Video signal reference voltage (+)R O
16 A03 G_V1 Video signal reference voltage (-)G O
17 A04 G_V2 Video signal reference voltage (+)G O
18 A05 B_V1 Video signal reference voltage (-)B O
19 A06 B_V2 Video signal reference voltage (+)B O
20 Vcc Power Supply for Output Buffer (+5V) -
21 Vdd Power Supply +5V -
22 CS2 Slave address setting port 2 (Vdd) I
23 CS1 Slave address setting port 1 (Vdd) I
24 CS0 Slave address setting port 0 (GND) I
Pin No. Name Function I/O
● IIC Bus D/A Converter (IC3571, M62392FP) Port Functions
1OE IO_ENB I
2D0 D0 I
3D1 D1 I
4D2 D2 I
5D3 D3 I
6D4 D4 I
7D5 D5 I
8D6 D6 I
9D7 D7 I
10 GND GND -
11 CK ADD1_CS Output Port Chip Select Enable = L I
12 Q7 MUTE Audio Mute Output Mute = H O
13 Q6 READY_LED Ready LED Ready = H O
14 Q5 LAMP_LED Lamp Replace LED Replace = H O
15 Q4 TEMP_LED Warning Temperature LED Warning = H O
16 Q3 PWR_LED AC Power LED ON = H O
17 Q2 KO3 KEY Scan Output O
18 Q1 KO2 KEY Scan Output O
19 Q0 KO1 KEY Scan Output O
20 Vdd Power Supply +3.3V -
Pin No. Name Function I/O
● Output Expander (IC1801, TC74LCX574FT) Port Functions