PROTECTION VERIFICATION METHOD
Protection
verification
Voltage
in 3 of IL001
Check
Yes No
exceeds 4V fleetingly
- the 5 volt inputs
- the I2C buses
?
TL004
correct
?
Yes
Voltage
in 3 of IL001
No
exceeds 4.6V fleetingly
?
Yes
Power supply Time base
SECURITY SECURITY
Upon TV powering up, check Upon TV powering up, check
- SV = 18 volts - VFB = 50 volts
- + DRV = 20 volts - VR = 50 volts
- + 12 volts - + V = 10 volts
- + 9 volts - - V = -12 volts
- + 5 volts - HP1 = 40 volts
- the security circuit and its - BCL = 12 volts
constant CP 157 - HP2 (EHT level) = 90 volts
- the main power supply primary and 7 of IF001 = -10 volts
- Line return = 30 Vcc (cath. DL14)
- the security circuit and its constant CP157