Philips LC03E Service Manual page 25

5.5.3
How To Connect
1. First, install the ComPair Browser software (see the Quick
Reference Card for installation instructions).
2. Connect the RS232 interface cable between a free serial
(COM) port of your PC and the PC connector (marked with
'PC') of the ComPair interface.
3. Connect the mains adapter to the supply connector
(marked with 'POWER 9V DC') of the ComPair interface.
4. Switch the ComPair interface 'OFF'.
5. Switch the television set 'OFF' with the mains switch.
6. Connect the ComPair interface cable between the
connector on the rear side of the ComPair interface
(marked with 'I2C') and the ComPair connector inside the
TV (the ComPair connector (pos.nr.1111) is situated close
to the tuner on the TV Board, see Chassis Overview in
chapter 1).
7. Plug the mains adapter in a mains outlet, and switch the
interface 'ON'. The green and red LEDs light up together.
The red LED extinguishes after approx. 1 second while the
green LED remains lit.
8. Start the ComPair program and read the 'Introduction'
chapter.
LCD PANEL
Figure 5-5 ComPair Interface connection
5.5.4
How To Order
ComPair order codes (EU/AP/LATAM):
•
Starter kit ComPair32/SearchMan32 software and
ComPair interface (excl. transformer): 3122 785 90450.
•
ComPair interface (excluding transformer): 4822 727
21631.
•
Starter kit ComPair32 software (registration version): 3122
785 60040.
•
Starter kit SearchMan32 software: 3122 785 60050.
•
ComPair32 CD (update): 3122 785 60070 (year 2002,
3122 785 60110 (year 2003).
•
SearchMan32 CD (update): 3122 785 60080 (year 2002),
3122 785 60120 (year 2003).
•
ComPair interface cable: 3122 785 90004.
•
ComPair firmware upgrade IC: 3122 785 90510 (only for
sets with software upgrade facilities).
•
Transformer Europe: 4822 727 21632.
•
Transformer UK: 4822 727 21633.
Note: If you encounter any problems, contact your local
support desk.
Service Modes, Error Messages, and Repair Tips
To LCD
ComPair
SERVICE
CONNECTOR
I 2 C
PC VCR Power
CL36532000_000.eps
9V DC
5.6
Trouble Shooting Tips
5.6.1
Scaler/TV Board Power Supply Problems
In this paragraph some troubleshooting steps for checking the
power supply of the Scaler-board and TV-board circuitry are
described.
•
Measure across pin-1 and pin-4 of connector 1003
(diagram C1). +12V (15" and 17") or +24V (23") should be
present. If the voltage is not present, probably is caused
by:
–
AC to DC adaptor is defect.
–
Short circuit in TV-board (can be isolated by connector
1003).
–
Fuse 1002 is open circuit.
•
Measure across C2923 (diagram A10). +3V3 should be
present. If not present, probably this is caused by:
–
IC7920 is defective.
–
R3925 is defective.
–
The power supply circuit (diagram C1) is defective (see
Scaler-board circuit trouble shooting tips).
•
Measure R3017 or R3085 (diagram A1) with oscilloscope.
There should be I2C activity. If no activity is present, this
probably is caused by:
–
IC 7064 micro-P is defective.
–
The I2C clock line or data line is grounded. (LED
should blink indicating SW protection is active).
–
The IC 7064 reset circuit consisting of T7063, T7067
and T7069 and its surrounding components are
defective.
•
Measure pin-19 of connector 1010 (diagram A1). The
standby signal should be high (2V9). If not high, probably
this is caused by:
–
IC 7064 micro-P is defective (output port pin-13).
–
Transistor 7062 is defective.
•
Measure across C2913/C2933 (diagram A10). +8V3/+5V4
should be present respectively. If not present, probably this
is caused by:
011003
–
IC 7910/7930 regulator is defective.
–
Fuse 1903 is defective.
–
Switching FET 7900 is defective.
–
Transistor T7901 is defective.
•
Measure across C2007 (diagram C1). +5V should be
present. If not present, probably this is caused by:
–
+5V grounded by the load.
–
Regulator IC 7001 is defective.
–
Control transistor T7003/7002 is defective.
–
Scaler power control signal line (POW-CON-SCALER
coming from TV-board) is defective.
•
Measure pin-4 or pin-5 of connector 1402 (diagram C4).
Pin-4 should be high (+4V7) and pin-5 also should be high
(+3V4). If one/both of the voltage is not present, probably
this is caused by:
–
IC 7402 (JagASM) is defective.
–
Transistor 7403 is defective.
–
Inverter board is defective.
•
Measure pin-4 or pin-5 of connector 1402 (diagram C4).
Pin-4 should be high (+4V7) and pin-5 also should be high
(+3V4). If one/both of the voltage is not present, probably
this is caused by:
–
IC 7402 (JagASM) is defective.
–
Transistor T7403 is defective.
–
Inverter board is loading either of the voltage.
LC03E 5. EN 25