2. OLED
2.1. OLED is not lit
Check the connection.
Has a contact failure occurred or is a connector
missing?
DIGITAL PCB : [
N1001
] to FRONT PCB : [
N5006
]
Check the connection.
Has a contact failure occurred or is a connector
missing?
POWER PCB : [
N4007
] to FRONT PCB : [
N5008
]
Check the power supply voltage. FRONT PCB
Is the power supply voltage abnormal?
[
N5008 : 2, 3pin
] = +3.3V ± 0.5V,
[
N5008 : 4pin
] = +18V or more +35V or less
Check the output voltage. FRONT PCB
Does the output voltage largely deviate from
+16V?
[
U5002
] = +16V ± 1V
Check the output voltage. FRONT PCB
Does the output voltage largely deviate from
+12V?
[
C5020 :
+ terminal] = +12V ± 2V
After the power is turned on, does the Front PCB
[
N5006: 3 pin
] EL_RESET logic turn to "
Hi
"?
Turn on the power and check the waveform of
the digital signal.
FRONT PCB [
N5006 : 4-15pin
]
Is there an abnormality in the "
Hi
" (3.3V) or "
Lo
"
(0V) level?
Check that the OLED module contacts [
N5009
]. If
no abnormalities are apparent, it is likely there is
a malfunction in the OLED module.
Replace the OLED module.
Check if the connection is as indicated in the
wiring diagram and adjust the FFC wiring if
necessary.
If this does not re-establish contact in the wiring,
replace the FFC or the circuit board which the
connectors are mounted on.
Check if the connectors are connected as
indicated in the wiring diagram and adjust the
connections if necessary.
If this does not re-establish contact in the wiring,
replace the Wire Assy unit or the circuit board
which the wires are mounted on.
Check each part listed after "
YES
".
If the Front PCB [
U5002
] or the [
R5062, R5064
or R5066
] exhibit abnormalities, replace the
affected part.
Remove the OLED module from the [
N5009
]
and check for shorts in the Front PCB [
C5020
: +
terminal] and GND.
If there are no abnormalities, replace the OLED
module.
The System uCOM is malfunctioning or latched.
Check each part listed after "
The System uCOM is malfunctioning or latched.
Check each part listed after "
".
NO
NO
NO
NO
NO
YES
NO
YES
YES
YES
YES
YES
NO
YES
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
50