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Sony Model KZ-32TS1U // KZ-41TS1U TV Diagnostic Guide
Chapter 16 - Self-Diagnostics
The front panel Lamp LED flashes continuously when the lamp reaches end of life and fails to ignite.
The front panel Standby LED blinks to indicate a more serious fault. If the TV starts and shuts down, the LED will
repeatedly blink a number of times to indicate the reason for shutdown. The boards that can cause TV shutdown
are listed in Table 16-1.
Table 16-1 - Self-Diagnosis
Standby LED
blinks
Cause
Suspected board
3 times
Lamp cover door is not closed.
(See Lamp Control diagram)
Lamp cover switch not shorted (T board).
4 times
Fan rotation is not detected.
(See Fan Control diagram)
A board (fan control), G Bd (Power supply) or M
Bd. (control).
5 times
Power Block board cannot turn
on the lamp.
Power Block board or the Lamp.
6 times
Low or missing 5Vdc.
G board or a load on the 5V line (any board). If the
problem is not on the G board, unplug each board,
then power ON the TV to see if 5Vdc appears at
CN1604/pin 1. Remove the BB board first.
9 times
L/R Audio Output speaker line
monitored for 0Vdc.
G board (power supply) or A board (audio output).
Check +15Vdc fuses PS1601, & 1602 on G board.
This self-diagnostic information is also stored in memory and viewable on the TV screen. It is accessed by
aiming the remote at the TV and pressing the following buttons: Display, 5, Vol -, Power. Half of the list above
will be shown on the TV screen. Moving the joystick left or right permits you to see the remaining self-diagnostic
categories. The number of times the failure has occurred is displayed to the right of the intermittent problem.
Clearing this memory requires you to exit this program by shutting off the TV, entering the regular service mode
(Display, 5, vol +, Power), and pressing 8, Enter.
