9-2. TH1/TH2
Temperature of the heatsink is detected.
Detection port:
89 pin (THM1)
90 pin (THM2) (U, C models)
Normal value:
87 to 255
(Reference voltage: 3.3 V=255)
*
If TH1 or TH2 becomes out of the normal value range, the protection function works to turn off the power.
T H 1 : 2 2 6 2 : 2 2 6
9-3. TH3
Temperature of the bridge diode (D24 on MAIN P.C.B.) is detected.
Detection port:
63 pin (THM3)
Normal value:
88 to 255
(Reference voltage: 3.3 V=255)
*
If TH3 becomes out of the normal value range, the protection function works to turn off the power.
T H 3 : 2 2 6
9-4. AMP/DK
AMP:
Power amplifier output level is detected.
Detection port:
88 pin (AMP_OLV)
Normal value:
128 to 255
(Reference voltage: 3.3 V=255)
DK:
Not for service.
A M P : 2 5 5 D K : 2 5 5
38
HTR-2064/NS-B20/NS-C20/NS-SWP20
HTR-2064/NS-B20/ NS-C20/NS-SWP20
