Pioneer PDP-424MV Service Manual page 39

(2) Blinking in green
Alarm of temperature sensor error
Blinking in green (intervals of 2 seconds)
Turn off the main power supply.
Pressing the [MENU] key of the product,
turn on the main power supply to cancel
alarming.
Press the remove control keys in the
sequential order of [POWER ON]
[POWER ON]→[EXIT]→ [DISPLAY] and
enter the factory adjustment menu.
Press the [MENU/ENTER] key to display
the FAN SET menu (P2/11).
Is there a display of
numerals (almost room
temperatures) at the right
side of [T1, T2, T3]?
YES
The MAIN PWB is fault.
NO
Is there a display of [-] for
all the numerals at the
right side of [T1, T2, T3] ?
NO
YES
Are there a 3.3Vdc
output at Pin 3 and a
NO
clock signal (3.3Vpp) at
Pins 1 and 4 of the
TS in the state that the
TS connector is
disconnected and the
main power supply is
turned on?
YES
The TS connector
or the SENC PWB
is fault.
→
FAN MODE
FAN OFF/L
FAN
FAN
SF
PLE SAVE
T ALM
RET TME
PLE TIME
T1 030
T3 030
IC ERROR —
[MENU/ENTER] NEXT [EXIT] PREV 2/11
When a [-] display is presented, the PWB with the symbol shown below is
fault. T1: SEND PWB, T2: SENB PWB, T3: SENC PWB
Are there a 3.3Vdc
output at Pin 3 and
NO
a clock signal (3.3Vpp)
at Pins 1 and 4 of the
TR in the state that the
TR connector is
disconnected and the
main power supply is
turned on?
YES
The TR connector
or the SEND PWB
is fault.
FAN SET
FAN SET
H CONT ENA
— CONT UP
L/M — CONT TIME —
M/H — UP STEP
SAVE 075 DOWN STEP 2
070 READ TIME 60
095 TEMP
030
001
T2 025
T4 —MODE 2
Are there a 3.3Vdc
output at Pin and a
NO
clock signal (3.3Vpp)
at Pins and of the TM
in the state that the
TM connector is
disconnected and the
main power supply is
turned on?
YES
The TM connector
or the SENB PWB is
fault.
8-3
—
—
2
1
The MAIN PWB
is fault.
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