Sony FWD-50PX1 Service Manual page 31

b) Power Supply
Menu structure
Service Mode
Service Status
Power Supply
Digital 5 V
Digital 3 V
Analog 6 V
Main DC voltages of the machine are displayed.
Digital 5 V : Internal 5 V power supply voltage is dis-
played.
Digital 3 V : Internal 3.3 V power supply voltage is
displayed.
Analog 6 V : Internal 6 V power supply voltage is dis-
played.
c) Fan & Temp Status
Menu structure
Service Mode
Service Status
Fan&Temp Status
Fan Drive
Fan
P/S Temp
P/S Temp
NO ACK DEV
The internal temperature of the machine and the fan
operating status are displayed.
Fan Drive : Operating status of the fan drive circuit is
displayed. [OK] appears when it operates
normally. [NG] appears when it does not
operate normally.
Fan : Operating status of the fan is displayed.
[OK] appears when all fans operate
normally. [NG] appears when any one of
the fans does not operate normally.
P/S Temp : Temperature status inside the power
supply block is displayed. [OK] appears
when temperature is normal. [NG]
appears when temperature is abnormal.
P/S Temp : Temperature inside the power supply
block is displayed.
NO ACK DEV : Status whether the communication with the
respective devices that are controlled by the
I 2 C bus is established or not is displayed.
FWD-50PX1
: 5.0[V] 5 V for digital circuit
: 3.3[V] 3 V for digital circuit
: 6.0[V] 6 V for analog circuit
: OK
: OK
: OK
: 44[dC]
: 0004
When the value that is displayed on the PDP panel is
converted to the binary number, each bit has the following
meaning.
Bit 0 : Audio Processor
Bit 1 : Audio Switch
Bit 2 : AV Switch
Bit 3 : Closed Caption Decoder
Bit 4 : 3D Comb filter
Bit 5 : Chroma Decoder
Bit 6 : PDP
Bit 7 : Tuner (No Use for PFM)
Bit 8 : Auto Wide Decoder
Bit 9 : AD Converter
Bit 10 : EEPROM
Bit 11 : IP Converter (System IC)
Bit 12 : OSD (No Use for PFM)
Bit 13 : PLD (No Use for PFM)
Bit 14 : RTC (No Use for PFM)
Bit 15 : Scan Converter (No Use for PFM)
n
This machine is not equipped with the AV switch,
therefore bit 2 always goes to 1.
Each bit 0 : OK, 1 : NG
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