Service Test Programs - Philips LX7000SA Service Manual

SERVICE TEST PROGRAM
ADC
TUNER
TEST TEST
N
SOURCE
PROG
Button pressed? Button pressed?
Y Y
Display Tuner Version
"ccc"
Display shows
"ADC1 Value"
(Input Line - Key0)
PROG
Button pressed?
N
SOURCE
Button pressed?
Y
Service frequencies are
Y
copied to the RAM (see Table 1)
Tuner works normally except:
PROGRAM button
Display shows
"ADC2 Value"
(Input Line - Key1)
Disconnect
Mains cord ?
N
SOURCE
Button pressed?
Y
Y
Service Mode left
Display shows
"ADC3 Value"
(Input Line - AmNTC)
PRESET
N
SOURCE
1
Button pressed?
2
Y
3
Display shows
4
"ADC4 Value"
(Input Line - Option)
5
6
N
9
7
Button pressed?
8
Y
9
10
ADC Test is used for checking the ADC inputs
11
to the microprocessor.
The display shows an ADC value between 0
and 255 for an input signal between 0 and 5V.
Note: * Depending on the selected grid frequency (9 or 10kHz).
By holding the "SOURCE" and "PROG" buttons depressed
Note :
while switching on the Mains supply, the tuning grid frequency
If the ADC value on the NTC line is below 69,
is toggled between 9kHz and 10kHz for the Oversea (/21)
the set will go to standby mode because the
temperature is too high. version.
3-1
To start service test program
hold T & SOURCE
depressed while
plugging in the mains cord
Display shows the
ROM version
"S-Vyy"
(Main menu)
QUARTZ
TEST
N N
CLOCK/TIMER
Button pressed?
Y
Display shows
32K
Output on Quartz-Test-Pin
pin 19 of uP = 2048Hz
N
N
CLOCK/TIMER
Button pressed?
Y
Display shows
12M
Output on Quartz-Test-Pin
pin 19 of uP = 2,929.6875Hz
N
9 N
Button pressed?
Y
Europe USA Oversea
"EUR" "USA" "OSE"
87.5MHz 87.5MHz 87.5MHz
108MHz
108MHz 108MHz
530kHz
531kHz 531/530kHz*
1700kHz 1602/1700kHz*
1602kHz
558kHz 560kHz 558/560kHz*
1494kHz 1500kHz 1494/1500kHz*
87.5MHz 98MHz 87.5/98MHz*
87.5MHz
87.5MHz 87.5MHz
87.5MHz
87.5MHz 87.5MHz
87.5MHz 87.5MHz
87.5MHz
STANDBY / ECO POWER
98MHz 87.5MHz 98/87.5MHz*
LCD BACKLIGHT
Table 1
S refers to Service Mode
V refers to Version
yy refers to Software version number of the uProcessor
(counting up from 01 to 99)
DISPLAY
TEST
N
BII
Button pressed?
Y
Display shows Figure 1
and switch all LEDs on
(see Table 2 - Pattern 1)
N
BII
Button pressed?
Y
Display shows Figure 2
and switch alternate LEDs on
(see Table 2 - Pattern 2)
N
BII
Button pressed?
Y
Display shows Figure 3
and switch all LEDs off
(see Table 2 - Pattern 3)
N
9
Button pressed?
Y
LEDs
Pattern 1 Pattern 2 Pattern 3
SACD ON OFF OFF
GREEN RED OFF
ON ON ON
Table 2
3-1
Figure 1
Figure 2 Figure 3
Activated with ACTION
TEST
EEPROM TEST T A test pattern will be sent to the EEPROM.
"PASS" is displayed if the uProcessor read back
the test pattern correctly, otherwise "FAIL" will be
9 to Exit
displayed.
S
EEPROM FORMAT Load default data. Display shows "NEW" for 1 second.
TEST
Caution!
All presets from the customer will be lost!!
Pressing this button will toggle between the status
AUTO STANDBY CENTER -
TOGGLE (RC) "AUTO STANDBY ON" and "AUTO STANDBY OFF".
The status will scroll once across the Display.
ROTARY Rotary Volume Display shows value for 2 seconds.
ENCODER TEST Knob
Values increases or decreases in steps of 1 until
0 (Volume Min.) or 40 (Volume Max.) is reached.
LEAVE SERVICE Disconnect
mains cord
TEST PROGRAM
Various
other Tests
LX7000SA & LX8000SA_Service Test Program_dd wk0232