Yamaha HTR-6150 Service Manual page 40

RX-V563/HTR-6150/DSP-AX563
TH/PL
TH: THM (Thermo protection detection)
The temperature of the heat sink is detected.
Normal value:
* If THM is out of the normal value range, the protection function works to turn off the power.
PL: PLDET (Power limiter detection)
The output voltage of power amplifier is detected.
U, C models (Reference voltage: 3.3 V=255)
PLDET
LIM H: 255 / L: 102
(LIM: Limiter control)
R, T, K, A, B, G, E, F, L models (Reference voltage: 3.3V=255)
PLDET
LIM H: 255 / L: 90
(LIM: Limiter control)
PI/DE
PI: PRI (Current protection detection)
The current of the power amplifier is detected.
Normal value:
DE: PDET (Sub-trans power detection)
Normal value:
* If PRI and PDET are out of the normal value range, the protection function works to turn off the power.
40
0 to 136 (Reference voltage: 3.3 V=255)
N3TH: 64PL:255
During normal operation
255
H
During normal operation
255
H
0 to 100 (Reference voltage: 3.3 V=255)
0 to 255 (Reference voltage: 3.3 V=255)
N4PI:
Value for starting limiter operation
77
L
Value for starting limiter operation
108
L
0DE: 0
Value for canceling limiter operation
108
H
Value for canceling limiter operation
139
H