Samsung HT-Z210
Measures to be taken when the Protection Circuit operates
Operation
of Power Block Protection Circuit
The
Condition of Power Protection Active.
1. Voltage of SMPS’s PVDD (+34.5V, J3) is higher or lower than Standards.
Normal Condition Voltage Range: PVDD (+34.5V, J3): about +34.5V
2. Over-current occurs to AMP IC. (Over-output or Output short)
3. AMP IC’s temperature exceeds 150°C.
4. No supply voltage on GATE DRIVER
1. Voltage of SMPS’s PVDD (+34.5V, J3) is higher or lower than Standards.
Normal Condition Voltage Range: PVDD (+34.5V, J3): about +34.5V
2. Over-current occurs to AMP IC. (Over-output or Output short)
3. AMP IC’s temperature exceeds 150°C.
4. No supply voltage on GATE DRIVER
SMPS board & circuit diagram
Power
Protection
* OTW:
Active, IC’s inner temperature exceeds over 150°C. (Under 2.7V, Protection Circuit wills Active)
* TAS5352
3rd PIN: Shout down (Under 2.7V,
Protection Circuit wills Active)
Total power failure troubleshooting
Check
Amp in Power Protection
[check
AMP Malfunction before disassembling Main Unit (Do NOT Insert AC-Cord in
AC-Socket)]
Connector voltages
Amplifier schematic
