Philips MC-77, Руководство по обслуживанию

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3-4 3-4
Various
other Tests
Activated with
ACTION
TEST
Q
EEPROM FORMAT Load default data. Display shows "NEW"
for 1 second.
Caution!
All presets from the customer will be lost!!
Disconnect
mains cord LEAVE SERVICE
TESTPROGRAM
R
9
to Exit
EEPROM TEST 8 test patterns will be sent to the EEPROM.
"PASS" is displayed if the uProcessor read
back the test patterns correctly, otherwise
"ERROR" will be displayed.
Volume Knob ENCODER TEST Display shows value for 2 seconds. Values
increases or decreases in steps of 1 dB until
VOL MUTE (Min.) or 0dB (Max.) is reached.
Treble DEMO MODE Pressing this button will toggle between
DEMO ON and DEMO OFF. The DEMO
status will scroll once on the Display.
STANDBY-ON
Button pressed?
Y
N
Set is in Service PLAY Mode.
The Service Play Mode is intended to
detect and identify the failures in the CD Mode.
In this mode the electronics will still function
even when an error is detected so that
repair activities can be carried out.
SERVICE
PLAY MODE
In case of failures, error
codes according to table 2
will be displayed.
O
Button pressed?
Y
Y
Y
N
N
N
O
Button pressed?
9
Button pressed?
Display shows
12M
Output at (Front Display Board)
pin 19 of uP = 2,929.6875Hz
Display shows
32K
Output at (Front Display Board)
pin 19 of uP = 2048Hz
QUARTZ
TEST
TUNER
Button pressed?
Disconnect
Mains cord ?
Y
N
N
Y
Service frequencies are
copied to the RAM (see Table1)
Tuner works normally
except:
PROGRAM button
Service Mode left
TUNER
TEST
Display Tuner Version
"ccc"
TUNER
Button pressed?
N
Y
PRESET
1
2
3
4
5
6
7
8
9
10
11
Europe
"EUR"
87.5MHz
108MHz
531kHz
1602kHz
558kHz
1494kHz
153kHz
279kHz
198kHz
98MHz
87.5MHz
USA
"USA"
87.5MHz
108MHz
530kHz
1700kHz
560kHz
1500kHz
98MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
Oversea
"OSE"
87.5MHz
108MHz
531/530kHz*
1602/1700kHz*
558/560kHz*
1494/1500kHz*
98MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
Table 1
Note: * Depending on the selected grid frequency (9 or 10kHz)
By holding the TUNER and
R
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.
Y
N
Y
N
Y
N
2
Button pressed?
2
Button pressed?
9
Button pressed?
DISPLAY
TEST
Display shows Fig. 1
and switch all LEDs on
Display shows Fig. 2
and selected LEDs on
(see note 1)
Figure 2
note 1 : 3CDC, TAPE and wOOx
Figure 1
Table 2
Error code
E1000
E1001
E1002
E1003
E1005
E1006
E1007
E1008
E1020
E1031
E1061
E1071
E1079
Error Description
Focus Error
Triggered when the focus could not be found within a certain time when starting up the CD
or when the focus is lost for a certain time during play.
Radial Error
Triggered when the radial servo is off-track for a certain time during play.
Sledge In Error
The sledge did not reach its inner position (inner-switch is still close) before approximately
6 Sec. have passed by. Inner-switch or sledge motor problem.
Sledge Out Error
The sledge did not come out of its inner position (inner-switch is still open) before approximately
250 mSec. have passed by. Inner-switch or sledge motor problem.
Jump-offtrack error
Triggered in normal play when the jump destination could not be found within a certain time.
Subcode Error
Triggered when a new subcode was missing for a certain time during play.
PLL Error
The Phase Lock Loop could not lock within a certain time.
Turntable Motor Error
Generated when the CD could not reached 75% of speed during startup within a certain time.
Disc motor problem.
Focus Search Error
The focus point has not been found within a certain time.
The active lower carriage does not come to the end position within a certain time. This can
happen when the switches are defective, or when the carriage is blocked in between two end
positions (example: 2 disc in one carriage). The time-out is approximately 5 seconds.
The drawer could not enter the inside position and is opening again. This can happen if the
drawer is blocked such that it cannot go fully inside, or if the drawer switch is defective and never
closes.
The active upper carriage does not come to the end position within a certain time. This happen
when the switches are defective, or when the carriage is blocked in between two end positions
(example: 2 disc in one carriage)/ The time-out is approximately 5 Sec.
The drawer could not enter the outside position and is stopped at its blocked position. This can
happen if the drawer is blocked such that it cannot go fully outside, or if the drawer switch is
defective and never opens.
To start service test program
hold
P
& AUX
depressed while
plugging in the mains cord
Display shows the
ROM version *
"S-Vyy"
(Main menu)
S refers to Service Mode.
V refers to Version.
yy refers to Software version number of
µ
Processor.
(Counting up from 01 to 99)
SERVICE TEST PROGRAM