Sony KP-HR432K90, Service Manual

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KP-HR432K90/HR532K90/HR532N90/HW572K90
RM-Y909K RM-Y908 RM-Y909K RM-Y909K
3. Blinking count display of STAND BY indicator
1. Summary of Self-Diagnosis Function
• This device includes a self-diagnosis function.
• In case of abnormalities, the STAND BY indicator automatically blinks. It is possible to predict the abnormality location by the
number of blinks. The Instruction Manual describes blinking of the /STAND BY indicator.
• If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was generated
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 STAND BY 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.
SECTION 1
SELF DIAGNOSIS FUNCTION
Note1: If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The sympton that is diagnosed first by the microcontroller is displayed on screen.
Note 2: Refer to Screen (G2) Adjustment in Section 3-1, 2 of this manual.
Note 3: If STANDBY indicator blinks six (6) times, unplug the unit and wait 10 minutes before performing the adjustment.
Deteced symptoms
Diagnosis Item
No. of times
STANDBY
indicator blinks
Probable Cause Location
7 times Horizontal deflection stopped • Q8035, 8038 is shorted. (D board)
8 times High voltage error • T8005 is faulty. (D board)
0 Power does not turn on
•Power cord is not plugged in.
• Fuse is burned out (F6001) (G board)
• Power does not come on.
• No power is supplied to the unit.
• AC power supply is faulty.
2 times
+B overcurrent (OCP)
(See Note 1) • H. OUT (Q8024) is shorted. (D board)
• +B PWM (Q8035, 8038) is shorted. (D board) • Power does not come on.
• Load on power line is shorted.
3 times +B overvoltage (OVP)
• IC501 is faulty (G board)
• IC5002 is faulty (G board)
• Has entered standby mode.
4 times Vertical deflection stopped
• +- 15V is not supplied. (D board)
• IC8003 is faulty. (A board)
• Has entered standby state after horizontal raster.
• Vertical deflection pulse is stopped.
• Power line is shorted or power supply is stopped.
5 times
White balance failure
(Not balanced)
• Video out (IC7101, 7201, 7301) is faulty. (CR, CG, CB board)
•CRT drive (IC309) is faulty. (A board)
•G2 is improperly adjusted. (See Note 2)
• No raster is generated.
• CRT cathode current detection reference pulse output is small.
6 times
LOW B OCP/OVP
(Overcurrent/over voltage)
(See Note 3)
• +5 line is overloaded. (A, B boards)
• +5 line is shorted. (A, B boards) • No picture
• No picture
Audio error 9 times
• +- 19V line is shorted. (A, B boards)
• IC708 is faulty. (A board)
• PS701 or PS702 is opened. (A board)
• No sound
Lamp OFF :
3.0 seconds
Lamp ON : 0.3 seconds
Lamp OFF : 0.3 seconds
Release of STAND BY indicator blinking.
• The STAND BY indicator blinking display is released by turning OFF the power switch
on the TV main unit or removing the plug from the power.
* One blink is not used for self-diagnosis.
•EXAMPLE
<Diagnosis Items> <Number of Blinks>
• +B overcurrent 2 times
• +B overvoltage 3 times
• Vertical deflection stop 4 times
< FRONT PANEL >
(EXEPT HR532N90) (HR532N90)
STAND BY indicator