Sharp LC-32LE631E, Руководство по обслуживанию

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LC-32LE631
LC-40LE631
LC-46LE631
• All service-unfriendly modes (if present) are disabled, like:
–
(Sleep) timer.
– Child/parental lock.
– Picture mute (blue mute or black mute).
– Automatic volume levelling (AVL).
– Skip/blank of non-favourite pre-sets.
How to Activate SDM
For this chassis there are two kinds of SDM: an analogue SDM
and a digital SDM . Tuning will happen according Table 5-1 .
• Analogue SDM : use the standard RC-transmitter and key
in the code “062596”, directly followed by the “MENU” (or
“HOME”) button.
Note: It is possible that, together with the SDM, the main
menu will appear. To switch it “off”, push the “MENU” (or
"HOME") button again.
Analogue SDM can also be activated by grounding for a
moment the solder path on the SSB, with the indication
“SDM” (see
Service mode pad ).
• Digital SDM : use the standard RC-transmitter and key in
the code “062593”, directly followed by the “MENU” (or
"HOME") button.
Note: It is possible that, together with the SDM, the main
menu will appear. To switch it “off”, push the “MENU” (or
"HOME") button again.
Figure 5-1 Service mode pad
After activating this mode, “SDM” will appear in the upper right
corner of the screen (when a picture is available).
How to Navigate
When the “MENU” (or “HOME”) button is pressed on the RC
transmitter, the TV set will toggle between the SDM and the
normal user menu.
How to Exit SDM
Use one of the following methods:
•
Switch the set to STAND-BY via the RC-transmitter.
• Via a standard customer RC-transmitter: key in “00”-
sequence.
5.2.2 Service Alignment Mode (SAM)
Purpose
• To perform (software) alignments.
• To change option settings.
• To easily identify the used software version.
• To view operation hours.
• To display (or clear) the error code buffer.
How to Activate SAM
Via a standard RC transmitter: Key in the code “062596”
directly followed by the “INFO” or “OK” button. After activating
SAM with this method a service warning will appear on the
screen, continue by pressing the “OK” button on the RC.
19100_057_110217.eps
110217
SDM
SERVICE MODES, ERROR CODES AND FAULT FINDING
5. Service Modes, Error Codes and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Stepwise Start-up
5.4 Service Tools
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Protections
5.8 Fault Finding and Repair Tips
5.9 Software Upgrading
5.1 Test Points
5.2.1 Service Default Mode (SDM)
Purpose
• To create a pre-defined setting, to get the same
measurement results as given in this manual.
• To override SW protections detected by stand-by
processor and make the TV start up to the step just before
protection (a sort of automatic stepwise start-up). See
section “
5.3 Stepwise Start-up ”.
• To start the blinking LED procedure where only LAYER 2
errors are displayed. (see also section “
5.5 Error Codes ”).
Specifications
Table 5-1 SDM default settings
• All picture settings at 50% (brightness, colour, contrast).
• Sound volume at 25%.
Region Freq. (MHz)
Default
system
Europe, AP(PAL/Multi) 475.25 PAL B/G
Europe, AP DVB-T 546.00 PID
Video: 0B 06 PID
PCR: 0B 06 PID
Audio: 0B 07 DVB-T
Perform measurements under the following conditions:
•
Service Default Mode.
• Video: Colour bar signal.
• Audio: 3 kHz left, 1 kHz right.
5.2 Service Modes
Service Default mode (SDM) and Service Alignment Mode
(SAM) offers several features for the service technician, while
the Customer Service Mode (CSM) is used for communication
between the call centre and the customer.
As most signals are digital, it will be dif fi cult to measure wave-
forms with a standard oscilloscope. However, several key ICs
are capable of generating test patterns.