Philips MCM8/21 Service Manual page 10

SERVICE TEST PROGRAM
QUARTZ
TUNER
TEST TEST
N TAPE
TUNER
Button pressed?
Button pressed?
Y
Y
Display Tuner Version
Display shows
"ccc"
32K
Output at (Display Board)
pin 19 of uP = 2048Hz
N
TUNER
Button pressed?
TAPE
Button pressed?
Y
Service frequencies are
Y
copied to the RAM (see Table 1)
Tuner works normally except:
Display shows
PROGRAM button
12M
Output at (Display Board)
pin 19 of uP = 2,929.6875Hz
N
Disconnect
Mains cord ?
9
Button pressed?
Y
Y
Service Mode left
East Eur. Extended-band USA
Europe East Europe
"EAS" "USA"
PRESET "EUR" "EAS"
65.81MHz
1 87.5MHz 87.5MHz 87.5MHz
108MHz
2 108MHz 108MHz 108MHz
3 531kHz 531kHz 74MHz 530kHz
4 1602kHz 1602kHz 87.5MHz 1700kHz
5 558kHz 558kHz 531kHz 560kHz
6 1494kHz 1494kHz 1602kHz 1500kHz
7 87.5MHz 87.5MHz 558kHz 98MHz
8 87.5MHz 87.5MHz 1494kHz 87.5MHz
9 87.5MHz 87.5MHz 98MHz 87.5MHz
10 70.01MHz 87.5MHz
87.5MHz 87.5MHz
11 65.81MHz 87.5MHz
98MHz 98MHz
Table 1
Note: * Depending on the selected grid frequency (9 or 10kHz).
By holding the ECO and TUNER buttons depressed while switching on the Mains supply,
one of the undermentioned features will be activated:
- the tuning grid frequency is toggled between 9kHz and 10kHz for the Oversea (/21) version.
- the extended FM1 (65.81MHz - 74MHz) is toggled on and off for East Eur. (/34) version.
3-1
To start service test program
hold
depressed while
plugging in the mains cord
Display shows the
ROM version
"S-Vyy"
(Main menu)
MP3-CD MODULE
TEST
N
N
CD (on RC)
Button pressed?
Y
Note : Disc should be available on the tray before entering the Service Test Mode.
MESSAGE
STEP DISPLAY
OKAY ERROR
1 MP3CD'03 - -
N
2 TI-Vnn - -
Choose
level
by pressing
3 TI BUS BUS OK BUS ER
on the RC
Q
4 SLD I - -
5 SLD O - -
N
6 TI FOC FOC OK FOC ER
R
Oversea
LEDs
"OSE"
87.5MHz ECO
108MHz CD
531/530kHz* TUNER
1602/1700kHz* TAPE
558/560kHz* AUX
1494/1500kHz* Volume Rotary
87.5/98MHz*
87.5MHz
87.5MHz
87.5MHz
98/87.5MHz*
& ECO
S refers to Service Mode
V refers to Version
yy refers to Software version number of the uProcessor
(counting up from 01 to 99)
ACTION
Indicates the module used.
Version of the MPEG software (nn = Version Number).
Communication test between the Main uP and CD Module.
CD SLEDGE MOTOR is moved in.
CD SLEDGE MOTOR is moved out.
FOCUS SERVO Test.
9
Press to exit.
Pattern 1 Pattern 2
Off Off
On On
On Off
On On
On Off
On On
Table 2
Figure 1
Figure 2
3-1
DISPLAY ADC
TEST TEST
N
DIM or RDS AUX
Button pressed? Button pressed?
Y Y
Display shows "ADC1 Value"
Display shows Figure 1
for ADC1
and switch all LEDs on
(Input Line - TpADC1)
except ECO LED
(see Table 2 Pattern 1)
AUX
N
Button pressed?
DIM or RDS
Button pressed?
Y
Y
Display shows "ADC2 Value"
for ADC2
Display shows Figure 2
(Input Line - TpADC2)
and switch alternate LEDs on
(see Table 2 Pattern 2)
AUX
Button pressed?
9
N
Button pressed?
Y
Y Display shows "ADC3 Value"
for ADC3
(Input Line - Option)
AUX
Button pressed?
Y
Display shows "ADC4 Value"
for ADC4
(Input Line - AmNtc)
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.
TEST Activated with ACTION
EEPROM TEST Test patterns will be sent to the EEPROM.
"PASS" is displayed if the uProcessor read back the test patterns
9
to Exit correctly, otherwise "FAIL" will be displayed.
S
EEPROM FORMAT Load default data. Display shows "NEW" for 1 second.
TEST
Caution! All presets from the customer will be lost!!
BII
Pressing this button will toggle between DEMO ON and DEMO
DEMO TOGGLE
OFF. The DEMO status will scroll once across the Display.
ROTARY Volume, Treble or Bass Display shows value for 2 seconds.
ENCODER TEST
Knob Values increases or decreases until Volume Maximum (0dB) or
Volume Minimum (VOL MUTE) is reached.
LEAVE SERVICE Disconnect
mains cord
TEST PROGRAM
N
N
N
N
N
Various
other Tests
Micro 2004_MCM7 & MCM8_Service Test Program_dd wk0410