KE-42MR1E, KE-50MR1E - Sony TV Service Manual (repair manual). Page 4

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KE-42/50MR1E (HK/ME)     4
DIAGNOSIS
(Reliability Self Diagnostic Display Specifications for MEDIA RECEIVER)
1) *Operation count is based on WDT.
*For flashes, the Power/Standby LED flashes in red.
*The flash period is based on the reliability standard.
The abnormal conditions are indicated by the following LED flashes.
Flash Count Error Display Name Error Description
Oprating Detection
Port
4
Fan Error
Error detected for
Detects Low when fan 
IC6200 pin #2 
fan box
function normally. 
Detects High when Fan stops 
abnormally.
8
Digtal OVP 
OVP for DD Con-  Detects High when normal.
IC5210 pin #49
verter on DP board Detects Low  when abnormal.
9
Panel Error
Panel malfunction Detects during communication 
detected with 
panel. 
Repair part
 FAN
 FAN CONNECTOR
 SET 11V LINE
 SET 5V   LINE
DP board
 Q1612, Q1613, Q1614
Panel Display Unit
The abnormal conditions are indicated by the following LED flashes.
Flash Count Error Display Name Error Description
Oprating Detection
Port
4
Fan Error
Error detected for
Detects Low when fan 
IC6200 pin #2 
fan box
function normally. 
Detects High when Fan stops 
abnormally.
8
Digtal OVP 
OVP for DD Con-  Detects High when normal.
IC5210 pin #49
verter on DP board Detects Low  when abnormal.
9
Panel Error
Panel malfunction Detects during communication 
detected with 
panel. 
*A failure part can be expected by the number of times of blink of LED. 
*When two failures occur, the failure item generated previously is detected. 
*When failure occurs simultaneously, an item with little number of times of blink is detected.
*In other than “Fan Error”, the unit is in standby state and blink LED at intervals of regulation. 
In “Fan Error”, the unit is in a standby state after display for 1 minute about the message of “Fan problem –   
Powering down”
every about 0.3s
about 3s
• Timing of LED blink (example of 4 times blink)
ON
OFF
In the following case, POWER LED of Media Receiver Box blinks at a fixed interval in ORANGE
When the cable which connects between Media Receiver Box and Panel Display has fallen out.
When the AC code for Panel Display has fallen out.
In the following case, POWER LED of  Panel Display blinks at a fixed interval in ORANGE
When the cable which connects between Media Receiver Box and Panel Display has fallen out.
When the AC code for Media Receiver Box has fallen out.
2)
The example which judges whether it is failure
• 
POWER LED of Media Receiver Box: Blink 9 times in RED, and of Panel Display blink,
and No picture or Power circuit does not work 
 Large possibility that Panel Display is out of order. 
When turn on Media Receiver Box, and NO LED of Box shine  
When NO Blue  LED of Box shine 
 Large possibility that Media Receiver Box is out of order.   
Check SET5V or IIC line on H1 board.
When turn on Media Receiver Box, and Fan does not work
 
 Large possibility that Media Receiver Box is out of order
3)
 
 Large possibility that Media Receiver Box is out of order. 
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