Denon AVR-X4500H Service Manual page 101

PROTECTION DIAGRAM
TR_THERMAL
FL
ASO
DC
TR_THERMAL
FR
ASO
DC
TR_THERMAL
C
ASO
DC
TR_THERMAL
SL
ASO
DC
TR_THERMAL
SR
ASO
DC
HEATSINK_THERMAL
HEATSINK_THERMAL
4CH PCB
TR_THERMAL
AS2L
ASO
DC
TR_THERMAL
AS2R
ASO
DC
TR_THERMAL
AS1L
ASO
DC
TR_THERMAL
AS1R
ASO
DC
HEATSINK_THERMAL
HEATSINK_THERMAL
5CH AMP PCB DIGITAL PCB
BN704
CN704
DC_DET2 DC_DET2
DC_DET1 DC_DET1
ASO_DET ASO_DET
THERMAL_DETA THERMAL_DETA
THERMAL_DETB THERMAL_DETB
THERMAL_DETE THERMAL_DETE
THERMAL_DETF THERMAL_DETF
BN781 CN781
DC_DET3
DC_DET3
ASO_DET ASO_DET
THERMAL_DETA THERMAL_DETA
THERMAL_DETB
THERMAL_DETB
THERMAL_DETE THERMAL_DETE
THERMAL_DETF THERMAL_DETF
CURRENT DETECT PART
uCOM
PROTECTION LOGIC
DC ⇒ L_activeshutdown
ASO ⇒ L_activeshutdown
THER PROTA ⇒ Change Power AMP Power Supply Voltage
THER PROTE ⇒ L_activeshutdown
F ⇒ FAN operation
CURRENT (After 90sec )
Over 0.8V & Low B & THERMAL E = Low ⇒ shutdown
Over 1.3V ⇒ shutdown
CPU LEVEL CHG PART
SPEAKER PCB FRONT CNT PCB
CN25A 9pin
CN25D 15pin BN25D 15pin
CURRENT DET CURRENT DET
CURRENT DET CURRENT DET
101
DC/ASO PROT 125pin/AN105
THER_PROT_F 96pin/PB5
THER_PROT_E 161pin/P91
THER_PROT_A 159pin/P93
CURRENT DET 166pin/AN006
BN25A 9pin