Block Diagram - Marantz MM7055/N1B Service Manual

BLOCK DIAGRAM

INPUT PART
FL
BAL
FR
SL
BAL
SR
CNT
BAL
u-COM PART
Flasher IN
OUT
REMOTE CONTROL
AT24C04
IN
DC IN
S-80145ALMC
DC OUT
Audio Block
FL
+12V
UNBAL
FL
BUF
FR
BUF
+12V
FR
SL
+12V
UNBAL
SL
BUF
SR
BUF
+12V
SR
CNT
+12V
UNBAL
CNT
BUF
FL_LEVEL
G
FR_LEVEL
G
SL_LEVEL
G
SR_LEVEL
G
CNT_LEVEL
G
C
LINE DET
Digital Block
+ 5 V L NJM2831F33
+5VL
SPK_ON1-4
SCL
I2C_SCK _HEAT_DET1-4
SDA
I2C_DATA FAN1-2
R5F21246SNFP
STANDBY1-2
_P_AMP_FAIL
OUT
RESET
_P_CURR_FAIL
_P_LINE_FAIL
+ 3 3 . V L
+5VL
+5VL +5VL +5VL
AMP PART
FL
FL AMP_B PART
FL
+29dB
FR
FR
FR
+29dB
SL
SL
AMP_A PART
SL +29dB
SR
SR
SR
+29dB
CNT
CNT
CNT +29dB
PO100-1 PO100-2 PO100-3
POSISTOR POSISTOR POSISTOR
_HEAT_DET_1 _HEAT_DET_2 _HEAT_DET_3
+VCC
LM94022BIMG LM94022BIMG LM94022BIMG
Display Block
FRONT PART
POWER
PROTECTION A.P.OFF
STAND BY
POWER ON/STAND BY
POWER & STAND-BY PART
+5VD
+12V
+18V
+15V
-15V
HEAT
UNBAL
_P_LINE_FAIL
DETECT
+35V
-35V
+ 3 3 . V L
+VCC
-VCC
POWER Block
+ 3 3 . V L
27
FL
FR
+18V
SL
FL
SR
FR
CNT
SL
DC_AMP
SR
CURR_AMP
CNT
_AVSS_DET1
DISPLAY ON/OFF
+18V
MAIN TRANS
STAND-BY PART
FAN1-2
+5V
REGULATOR
+12V +18V
REGULATOR REGULATOR
+18V
REGULATOR
SUB TRANS
+15V
REGULATOR
-15V
REGULATOR
POWER
P_DOWN STANDBY2
DOWN
+5VL
+5VL
REGULATOR STANDBY1
COM FL
FL_LEVEL
COM FR
FR_LEVEL
SPK_ON1
COM SL
SL_LEVEL
COM SR
SR_LEVEL
SPK_ON1
COM CNT
CNT_LEVEL
SPK_ON1
FAN