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GB 16
5.
FTV1.9DE
Voltage is present at C2606. Check/replace NFR 3663 and
3668, if one of them is an open-circuit. In case R3663 is an
open circuit, check/replace diode 6660, 6661 and capacitor
C2664 plus IC 7660. If IC7660 is defect, check/replace IC 7650
and C2262. In case of an open circuit of NFR 3668, replace IC
7650.
NFR 3663 and NFR 3668 are not defect. Measure waveform at
base of T7608. Is a square waveform present at gate of T7610?
Check/replace MOSFET T7610 and the drive-circuit around
T7640, T7641 and T7608.
5.7.2
VsVa-supply
The red LED is blinking (+5Vstby is OK!), which is an indication
of a protection.
Disconnect the VGA-cable between the E-box and the Monitor.
The Monitor is now operating as a stand-alone unit.
Switch the monitor via the DST, (command "Default") or via the
RC (special sequence) to the SDM.
•
Error-code 1, check the +5V supply
Check fuse 1103. If the fuse is an open circuit, check/replace
IC 7201. If fuse 1103 is OK, check the presence of the 17V. I
this voltage is not present check fuse 1102 + 1104 and D6121
+ D6122. If the 17V is present, then remove connector FD05.
The reason could be a too heavy load or a short-circuit of the
+5V supply. If after disconnection of connector FD05 the set
still goes into protection, check D6203, NFR 3205 and the
circuit around IC 7201.
•
Error-code 2, check the 8V6 supply
Check regulator IC 7203, NFR 3099 and D6204.
•
Error-code 8 there is something wrong with the
POWER_OKE signal. When the POWER_OKE signal is
low, the Vs and Va and the +5V are available.
Measure the voltage Va at C2120. Is the voltage between 55V
and 65V? If not check fuse 1105 and D6120. If both
components are OK, the cause could be a too heavy load.
Measure the voltage Vs at C2020. Is the voltage between 165V
and 185V? If not check D6020. If D6020 is OK, the cause could
be a too heavy load.
If both voltage are not present, check fuse 1004 at the input.
If fuse 1004 is an open circuit, check the MOSFET's 7005 and
7006 for a short-circuit. In case of short-circuit use the repair-
kit.
If fuse 1004 is OK, check the voltage at pin 15 of IC 7001. Is the
voltage at pin 15 approx. 16-17V? If NO, check NFR 3002 and
D6002 + D6030. If YES, check the waveforms FD49 and FD50
at pin 14 and 12. If they are present, check pulse transformer
5001 and the driver-circuits around MOSFET 7005 and 7006.
If the waveforms FD49 and FD50 are not present, replace
IC7001.
•
Error-code 5, check the audio-supply or the Audio amplifier
IC.
Check/replace fuse 1201 + 1202 and diode 6201 + 6202. If the
components are OK, check the audio-amplifier IC.
•
Error-code 6, check the Vs and/or the Va supply voltage.
The regulation-circuit of one of these voltages is not working
correctly.
For the Va supply check opto-coupler 7102 and IC 7110.
For the Vs supply check opto-coupler 7002 and IC 7010
5.8
ComPair
5.8.1
ComPair mode
The monitor, as a stand-alone unit, can be diagnosed via a PC/
laptop by using ComPair via the ComPair connector. Before
connecting the ComPair-cable at the AV Control panel on
connector AVC34, the monitor must be put in the "ComPair -
Mode ". This can be done by changing the jumpers at
connector AVC39. Connector AVC39 is situated under the uP
panel.
3/2/2013
Service modes, fault finding and repair tips
5.8.2
World of free manuals
The figure below shows how to do it.
ComPair
TOPVIEW B-SIDE
AVC39
5
4
6
3
7
2
8
1
DEFAULT MODE
Figure 5-1
After switching ON the set, the red LED will blink as an
indication that the monitor is in the ComPair mode.
Introduction
ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
development on the DST service remote control allowing faster
and more accurate diagnostics. ComPair has three big
advantages:
•
ComPair helps you to quickly get an understanding how to
repair the FTV1.9 in short time by guiding you step by step
through the repair procedures.
•
ComPair allows very detailed diagnostics (on I2C level)
and is therefore capable of accurately indicating problem
areas. You do not have to know anything about I2C
commands yourself; ComPair takes care of this.
•
ComPair speeds up the repair time since it can
automatically communicate with the FTV1.9 (when the
microprocessor is working) and all repair information is
directly available. When ComPair is installed together with
the SearchMan FTV1.9 electronic manual, schematics and
PCBs are only a mouse-click away.
ComPair consists of a Windows based faultfinding program
and an interface box between PC and the (defective) product.
The ComPair interface box is connected to the PC via a serial
or RS232 cable. In case of the FTV1.9 chassis, the ComPair
interface box and the FTV1.9 communicate via an I2C cable
(bi-directional) The ComPair fault finding program is able to
determine the problem of the defective television. ComPair can
gather diagnostic information in 2 ways:
1. Communication to the television (automatic)
2. Asking questions to you (manually)
ComPair combines this information with the repair information
in its database to find out how to repair the FTV1.9.
Automatic information gathering
Reading out the error buffer, ComPair can automatically read
out the contents of the entire error buffer.
Diagnosis on I2C level. ComPair can access the I2C bus of the
television. ComPair can send and receive I2C commands to
the micro controller of the television. In this way it is possible for
ComPair to communicate (read and write) to devices on the
I2C busses of the FTV1.9.
Manual information gathering
Automatic diagnosis is only possible if the micro controller of
the television is working correctly and only to a certain extend.
When this is not the case, ComPair will guide you through the
faultfinding tree by asking you questions and showing you
examples. You can answer by clicking on a link (e.g. text or an
www.nostatatech.nl
AVC39
5
4
6
3
7
2
8
1
ComPair MODE
CL 96532069_149.eps
190899
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