Philips L9.2A, Service Manual

Mechanical instructions

GB 14

L9.2A

4.

4.

Mechanical instructions

4.1

Service positions

See figure 4.2 for the service position.
Disconnect the connecting cable feeding the right-hand and the 
left-hand speaker, also disconnect the degaussing cable.

The mono-carrier is removed by pushing the two centre clips at 
both chassis brackets outwards and pulling the panel forward.

Figure 4-2 

5.

Service Modes, fault finding and repair tips

In this chapter the following paragraphs are included:
5.1 Test points
5.2 Service Modes and Dealer Service Tool (DST)
5.3 The menus and submenus
5.4 Error code buffer and error codes
5.5 The "blinking LED" procedure 
5.6 Trouble shooting tips
5.7 Customer service mode ( CSM )
5.8 ComPair 
5.9 Ordering compare

5.1

Test points

The L9 chassis is equipped with test points in the service 
printing. These test points are referring to the functional blocks:
•

A1-A2-A3, etc.: Test points for the Smart Sound + Mono 
Sound amplifier ( A10 ), BTSC decoder (C1), Audio 
amplifier (C2), ITT panel ( D1) and  Sound amplifier  ( D2 )

•

C1-C2-C3, etc.: Test points for the control circuit ( A7 ) and 
the  front control ( A8 )

•

F1-F2-F3, etc.: Test points for the frame deflection circuit ( 
A3 )

•

I1-I2-I3, etc.: Test points for the Tuner Video IF circuit ( A5 )

•

L1-L2-L3, etc.: Test points for the Line deflection circuit (  
A2 )

•

P1-P2-P3, etc.: Test points for the power supply ( A1 )

•

S1-S2-S3, etc.: Test points for the synchronisation circuit ( 
( A4 )

•

V1-V2-V3, etc.: Test points for the video processing circuit 
/ CRT panel( A6 )  / CRT panel ( B )

Measurements are performed under the following conditions:
•

Video: colour bar signal;

•

 audio: 3kHz left, 1kHz right

5.2

Service modes and Dealer Service Tool (DST)

For easy installation and diagnosis the dealer service tool 
(DST) RC7150 can be used. When there is no picture (to 
access the error code buffer via the OSD), DST can enable the 
functionality of displaying the contents of the entire error code 
buffer via the blinking LED procedure, see also paragraph 5.5. 
The ordering number of the DST (RC7150) is 4822 218 21232.

5.2.1

Installation features for the dealer

The dealer can use the RC7150 for programming the TV-set 
with presets. 10 Different program tables can be programmed 
into the DST via a GFL TV-set (downloading from the GFL to 
the DST; see GFL  service manuals) or by the DST-I (DST 
interface; ordering code 4822 218 21277). For explanation of 
the installation features of the DST, the directions for use of the 

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