Error codes LED blinking details Power Deflection and System control schematic diagrams Sony Trinitron KV AW21M80 21 inch color TV
The units in this manual contain a self diagnostic function. If an error occurs, the STANDBY indicator will automatically begin to flash. The number of times the STANDBY indicator flashes translates to a probable source of the problem. If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
DIAGNOSTIC
TEST INDICATORS
When
an errors occurs, the STANDBY indicator will flash a set number of times to
indicate the possible cause of the problem. If there is more than one error,
the indicator will identify the first of the problem areas. Result for all of the following diagnosis
items are displayed on screen. No error has occurred if the screen displays a
"0".
SELF
DIAGNOSTIC SCREEN DISPLAY & HANDLING SELF DIAGNOSTIC SCREEN DISPLAY
+B overcurrent [OCP]: Occurs when an over current on the +B(135V) line is detected by pin 32 of IC001 (A board).
If the voltage of pin 32 of IC001 (A board) is more than 4V, the unit will automatically go to standby.
V-PROTECT: Occurs when an absence of the vertical deflection pulse is detected by pin 13 of IC001 (A board).
IK - AKB: If the RGB levels do not balance within 15 sec after the power is turned on, this error will be detected by IC001 (A board). TV will stay on, but there will be 5 times LED blinking.
POWER SUPPLY NG (+5V) for VIDEO PROCESSOR: Occurs when IC001 internal HV protect detects an abnormal H-Pulse (frequency) due to improper power supply to IC001. TV cuts off high voltage power of anode CRT. No picture will be detected. eg: IC602, IC604 go faulty.
Schematic
Deflection
System control
SMPS
Audio Output
Video Output [CRT base card]
