Service Modes, Error Codes and Fault Finding
EN 25EM5A P/M 5.
• Up- or downloading of pre-sets.
• Managing of pre-set lists.
• Emulation of the Dealer Service Tool (DST).
• If both ComPair and SearchMan (Electronic Service
Manual) are installed, all the schematics and the PWBs of
the set are available by clicking on the appropriate
hyperlink. Example: Measure the DC-voltage on capacitor
C2568 (Schematic/Panel) at the Mono-carrier.
– Click on the “Panel” hyperlink to automatically show
the PWB with a highlighted capacitor C2568.
– Click on the “Schematic” hyperlink to automatically
show the position of the highlighted capacitor.
5.4.3 Stepwise Start-up / Shut-down
Under normal circumstances, a fault in the power supply, or an
error during start-up, will switch the television to protection
mode. ComPair can take over the initialisation of the television.
In this way it is possible to distinguish which part of the start-up
routine (hence which circuitry) is causing the problem.
Stepwise start- up explanation
This is realised via ComPair and is very helpful when a
protection is activated (see also paragraph “Protections”).
Table 5-1 Stepwise start-up table
Stepwise shut-down explanation
In the stepwise shutdown mode, state 2 and 4 are skipped.
Table 5-2 Stepwise shut-down table
Note (*): When the set is in stepwise mode and, due to
stepping-up, a protection is activated, the set will really go into
protection (blinking LED). The set will not leave the stepwise-
mode however. By stepping up, the set can be activated again,
until state X where the protection was activated. At state (X-1)
diagnostic measurements can be performed.
5.4.4 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 'I
2
C') and the ComPair connector at the rear
side of the TV (situated just below the tuner input)
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.
Figure 5-1 ComPair Interface Connection
5.4.5 How To Order
ComPair order codes:
• 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.
State Description mode Display LED
(Red)
Enabled pro-
tection
0 Low power stdby:
5V2/3V3 present, uP in
stdby-mode
On None
1 High power Stdby:
TV-set in stdby-mode
Wait 1s, flash
1 x
None
2 SSB is powered by std-
by-supply (5V/8V).
Degaussing (12 s) has
been activated.
Wait 1s, flash
2 x
1, 4, 5, 6 & 18
3 Semi stdby-mode:
HIP, HOP, MSP and
Tuner initialized lead-
ing to semi stdby-
mode.
Wait 1s, flash
3 x
4 All ICs are initialized,
HOP activates the
main supply, EHT-gen-
eration starts, black
current stabilization is
on
Wait 1s, flash
4 x
Plus 2 & 16
5TV On:
TV-set operates, un-
blanked picture.
Wait 1s, flash
5 x
State Description mode Display LED
(Red) (*)
Disabled
protections
5TV On:
TV-set operates, un-
blanked picture
Wait 1s,
flash 5 x
-
3 Semi stdby-mode:
SSB is powered by the
stdby-supply
Wait 1s,
flash 3 x
2 & 16
1 High power stdby:
TV-set in stdby-mode
Wait 1s,
flash 1 x
1, 4, 5, 6 & 18
0 Low power stdby:
5V2/3V3 present,
uP in stdbymode
On
CL96532156_029.eps
190600
PC VCR I
2
CPower
9V DC
R
L
AUDIO EXTERNAL 1
EXTERNAL 2
SERVICE
CONNECTOR
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