Self Diagnosis Function - Sony TRINITRON KV-HR36M91 Service Manual

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
+B overcurrent (OCP)
+B overvoltage (OVP)
Vertical deflection stopped
(V-STOP)
IK error (AKB ERROR)
Low-B error
Horizontal deflection
stopped (H-STOP)
Audio Protector
Zero Cross DET error
High-Voltage stopped
(HV-PROT)
SECTION 1

SELF DIAGNOSIS FUNCTION

Number of times
1
indicator blinks
T8001 (FBT) Rare short-circuit etc. (D board)
2 times
Q5001 (H-OUT), Q5006 (D board)
+B load open (D board) R6570 Open
3 times PH8003, control system malfunction L2603
Open
IC5101 (V. OUT) (D board) IC401
4 times
(CXA2170Q) (MG board)
VIDEO OUT IC malfunction IC9001, 9002,
5 times
9003 (C board) IC401 (CXA2170Q)
(MG board)
Sub power supply system load shorted etc.
6 times
(A board)
IC401 (CXA2170Q) (MG board) Q5404
7 times
(S-COR-OUT), Q5001 (H-OUT), Q5006
8 times
IC2000, 2001 malfunction (A board)
9 times
RY6000 Power relay melting down (A board) Has not entered standby mode.
T8001 (FBT) rare short-circuit (D board)
10 times
IC8002, Q8013, 8014, R8051 (D board)
Probable Cause Location
– 5 –
KV-HR36M61/HR36M91
RM-1007 RM-1007
Detected Symptoms
Has entered standby mode.
(Relay is off when the power
turns on.)
Has entered standby mode.
Has entered standby mode.
Has not entered standby mode.
Has entered standby mode.
Has entered standby mode.
Has entered standby mode.
Has entered standby mode.