Philips MCM277/05 Service Manual page 15

SERVICE TEST PROGRAM
KEY
TEST
Various
other Tests
ACTION
TEST Activated with
EEPROM CLEAR A test pattern will be sent to the EEPROM.
PROGRAM
"EEP CLR" is displayed while the erase processing.
9
to Exit Caution! All presets from the customer will be lost!!
Disconnect
LEAVE SERVICE
mains cord
TEST PROGRAM
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3-1
To enter Service
Testprogram hold
PLAY & Door Open/Close
buttons depressed while
plugging mainscord in.
Display shows the
MCU version
"MCU-Vyy"
(Main menu)
N
NEXT
Button pressed?
Y
Display shows
Table 1
9
N
Button pressed?
Y
Key test table
KeyNr Set key KeyNr
0 CD 10
1 AUX 11
2 TUNER 12
3 SOURCE 13
4 14
STANDBY/ON
5 OPEN/CLOSE 15
6 VOLUME DOWN 16
7 VOLUME UP 17
8 NULL 18
9 NULL 19
* Door switch is ignored → CD door can be opened.
V refers to Version
yy refers to Software version number of the uProcessor
(counting up from 01 to 99)
Figure 1
Set key KeyNr Set key
RDS 20 PROGRAM
21 SHUFFLE
CLOCK/DISPLAY 22 NULL
ALBUM + 23 SLEEP
ALBUM - 24 TIMER
SKIP PREV 25 DBB
SKIP NEXT 26 DSC
NULL 27 MUTE
NULL 28 USB
REPEAT
Table 1
3-1
DISPLAY ADC
TEST TEST
N
PREV
DBB
Button pressed? Button pressed?
Y Y
Display shows Figure 1 Display shows "ADC0 Value"
for ADC0
All display flags on.
(Input Line - For key scanning)
N
PREV
DBB
Button pressed?
Button pressed?
Y
Y
Display shows alternate
Display shows "ADC1 Value"
segment display from SEG0
for ADC1
to SEG64.
(Input Line - ioNTC Heat
detection for transformer)
N
PREV
DBB
Button pressed?
Button pressed?
Y
Y
No Display shows
Display shows "ADC2 Value"
for ADC2
(Input Line - Rotary volume)
9 N
Button pressed?
DBB
Button pressed?
Y
Y
Display shows "ADC3 Value"
for ADC3
(Input Line - Door switch status)
DBB
Button pressed?
Y
Display shows "ADC4 Value"
for ADC4
(Input Line - Version detection)
9
ADC Test is used for checking the
Button pressed?
ADC inputs to the microprocessor.
The display shows an ADC value
between 0 and 255 for an input Y
signal between 0 and 5V.
N
N
N
N
N
N