Power Failure Detection System - Panasonic PT-EX600U Service Manual

Troubleshooting

Power failure detection system

Detection of power failure
Projector provides a protection circuit to prevent the secondary failure when the power failure, fans failure or tempera-
ture failure occurs on the projector. The power failure detection lines "PF_3.3V_AD", "PF_3.3V_GAM", etc. are con-
nected to the main power supplies. When the failure occurs, IC301<SYSTEM CONTROL> receives an error informa-
tion through IC5201<FPGA>, and then outputs the signal "LAMP_DC_ON" from pin 32. The signal "LAMP_DC_ON"
is supplied to power supply circuit to control the power supply operation.
Error information table
IC Pin Signal Name
164 PF_KEY
202 PF_3.3V_GAM
227 PF_2.5V_GAM
123 PF_1.8V_GAM
122 PF_15V_GAM
73 PF_5VSI
166 PF_3.3VSI
167 PF_1.2VS1
220 PF_3.3V_AD
13 PF_1.8VD_AD
14 PF_1.8VA_AD
11 PF_S-6V_AV
121 PF_9V_LNS
IC5201
71 PF_15V_LNS
XC3S50A
245 PF_S3.3V
168 PF_S5V
226 PF_S5V_MAIN
204 PF_12V_FILTER
104 FAN_PLS[0]
222 FAN_PLS[1]
224 FAN_PLS[2]
107 FAN_PLS[3]
225 FAN_PLS[4]
192/
191/ FAN_PLS[5/6/7]
252
251/
237/ FAN_PLS[8/9/10]
216
69 PF_1.2V_FRT
IC301
PW392
343 FILTER_DET
-- FPGASW CONFIG
IC5201
SHUTTER_POSI1
67, 8
SHUTTER_POSI2
-- IRIS EEROR
Connection Lines
3.3V_KEY , 2.5V_KEY, 1.8V_KEY �
3.3VBF, 2.5V_BF, 1.2VBF
3.3V_GAM
2.5V_GAM
1.8V_GAM
15.5V_GAM
5VSI
3.3VSI
1.2VS1-1
3.3V_AD
1.8VD_A/D
1.8VA_A/D
S-6V
9V_LNS
15V_LNS
S3.3V
S5V
S5VL
12V_ID, 12V
FN901 Power & Fan Lock
FN902 Power & Fan Lock
FN903 Power & Fan Lock
FN904 Power & Fan Lock
FN905 Power & Fan Lock
FN906, FN907, FN908 Power & Fan
Lock
FN909, FN910, FN911 Power & Fan
Lock
S1.2V_FRT_INT
Filter Cartridge Detection
FPGA Config
Shutter Operation
Iris Operation
-98-
Error Information Failure Area
KEYSTONE(IC2301)
KS&DL
DAY LIGHT VIEW(IC4401)
GAMMA, 3.3V 3.3V Gamma on Main
GAMMA, 2.5V 2.5V Gamma on Main
GAMMA, 1.8V 1.8V Gamma on Main
SH&PANEL, 15.5V 15V Gamma on Main
HDMI, 5V 5V HDMI on Main
HDMI, 3.3V 3.3V HDMI&BUFFER on Main
HDMI, 1.2V 1.2V HDMI on Main
ADC, 3.3V ADC(ISL51002)&BUFFER
ADC, 1.8VD ADC(ISL51002)
ADC, 1.8VA ADC(ISL51002)
AV, S-6V S-6V on Main/AV
LENS, 9V 9V Lens Drive
LENS, 15V 15V Lens Drive
MAIN, S3.3V S3.3V on Main
MAIN, S5V S5V ADC on Main
MAIN, S5VL 5V on Main
AUDIO&ID 12V AUDIO SW, LAMP ID Drive
FN901, FN901 Power & Fan Lock
FN902, FN902 Power & Fan Lock
FN903, FN903 Power & Fan Lock
FN904, FN904 Power & Fan Lock
FN905, FN905 Power & Fan Lock
FN906, FN907, FN908 Power & Fan
FN906,907,908
Lock
FN909, FN910, FN911 Power & Fan
FN909,910,911
Lock
SWFPGA, 1.2V FPGA 1.2V
FILTER, DET Filter Cartridge Detection
SWFPGA, ERROR SWFPGA Config Error
SHUTTER, ERROR Shutter Operation Error
IRIS, ERROR Iris Operation Error