KV-HR29M91 - Sony TV Service Manual (repair manual). Page 5

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KV-HR29M91/HR34M91
RM-1007
RM-1007
1.
Summary of Self-Diagnosis Function
This device includes a self-diagnosis function.
In case of abnormalities, the  1  indicator automatically blinks.  It is possible to predict the abnormality location by the number
of blinks.  The Instruction Manual describes blinking of the  1  indicator.
If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was gener-
ated or not.  Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.
2.
Diagnosis Items and Prediction of Malfunction Location
When a malfunction occurs the  1  indicator only blinks for one of the following diagnosis items.  In case of two or more
malfunctions, the item which first occurred blinks.  If the malfunctions occurred simultaneously, the item with the lower blink
count blinks first.
The screen display displays the results regarding all the diagnosis items listed below.  The display “ 0 ” means that no malfunc-
tions occurred.
Diagnosis Item
Number of times 
1
indicator blinks
Probable Cause Location
Detected Symptoms
+B overcurrent (OCP)
2 times
T8001 (FBT) Rare short-circuit etc. (D board)  
Q5001 (H-OUT), Q5006 (D board)
Has entered standby mode. 
(Relay is off when the power 
turns on.)
+B overvoltage (OVP)
3 times
+B load open (D board)  R6570 Open  
PH8003, control system malfunction  L2603 
Open
Has entered standby mode. 
Vertical deflection stopped 
(V-STOP)
4 times
IC5101 (V. OUT) (D board) IC401 
(CXA2170Q)  (MG board)
Has entered standby mode. 
IK error (AKB ERROR)
5 times
VIDEO OUT IC malfunction IC9001, 9002, 
9003 (C board)  IC401 (CXA2170Q)  
(MG board)
Has not entered standby mode. 
Low-B error
6 times
Sub power supply system load shorted etc. 
(A board)
Has entered standby mode. 
Horizontal deflection 
stopped (H-STOP)
Audio Protector
7 times
IC401 (CXA2170Q)  (MG board)  Q5404 
(S-COR-OUT), Q5001 (H-OUT), Q5006
8 times
IC2000, 2001 malfunction (A board)
Has entered standby mode. 
Has entered standby mode. 
Zero Cross DET error
9 times
RY6000 Power relay melting down (A board) Has not entered standby mode. 
High-Voltage stopped 
(HV-PROT)
10 times
T8001 (FBT) rare short-circuit (D board) 
IC8002, Q8013, 8014, R8051 (D board)
Has entered standby mode. 
SECTION 1
SELF DIAGNOSIS FUNCTION
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