Marantz MM8003 - Block Diagram Overview

2019
SPK_ON1
SPK_ON2
SPK_ON3
SPK_ON4
+18V
_AVSS_DET1
_AVSS_DET1
OPT CNT SBR
SBL
SR SL FR FL
FL_LEVEL
FR_LEVEL
SL_LEVEL
SR_LEVEL
SBL_LEVEL
SBR_LEVEL
CNT_LEVEL
OPT_LEVEL
OPT
CNT
SBL
SBR
SL
SR
FR
FL
OPT
CNT
SBL
SBR
SL
SR
FR
FL
SUB TRANS
AC OUTLET(Only U ver)
POWER S/W
STANDBY2
+5VL
P_DOWN
MAIN TRANS
REGULATOR
REGULATOR
+15V
UNBALANCED
DETECT
-VCC
+VCC
-35V
+35V
_P_LINE_FAIL
-15V
+15V
+12V
STANDBY1
DOWN
REGULATOR
+5VL
REGULATOR
-15V
REGULATOR
HEAT
POWER
+18V+12V
+18V
BALANCED
BALANCED
BALANCED
UNBALANCED
UNBALANCED
UNBALANCED
UNBALANCED
BALANCED
BUF
BUF
BUF
BUF
BUF
BUF
+15V
OPT
CNT
SBR
SBL
SR
SL
FR
FL
OPT
CNT
SBR
SBL
SR
SL
FR
FL
OPT
CNT
+15V
+15V
+15V
+15V
SBL
SBR
+15V
+15V
SL
SR
BUF
BUF
FR
+15V
FL FL
FR
FR
SL
SR
SBL
SBR
SBL
SBR
CNT
OPT
CNT
OPT
SL
SR
FL
INPUT PART
LV3.3+LV3.3+
CPU PART
+3.3VL+5VL KIA78D33F
KEY2
KEY2
REMOTE CONTROL
IN
OUT
DOWN LOAD S/W
+5VL
AT24C04
S-80145ALMC
+5VL +5VL +5VL
SPK_ON1-4
_HEAT_DET1-4
FAN1-2
STANDBY1-2
_P_AMP_FAIL
_P_AMP_FAIL
_P_CURR_FAIL
_P_LINE_FAIL
V_LED1 V_LED2 V_LED3
DC OUT
DC-IN RC-IN
RC-INT
Flasher IN
DC IN
DC OUT
I2C_SCK
I2C_DATA
SCL
SDA
RESET
OUT
R5F21246SNFP
+5VL
FAN
FAN1-2
+18V
FL
FR
SL
SR
SBL
SBR
CNT
OPT
LM94022BIMG LM94022BIMG LM94022BIMG LM94022BIMG
_HEAT_DET_1 _HEAT_DET_2 _HEAT_DET_3 _HEAT_DET_4
OPT
CNT
SBL
SBR
SL
SR
FR
FL
CURR_AMP (2)
CURR_AMP (1)
DC_AMP (2)
DC_AMP (1)
+VCC
POWER ON/STAND BY
STAND BY
POWER
FRONT PART
FAN & PROTECTION PART
AMP PART
POWER & STANDBY PART
CURR_AMP (2)
CURR_AMP (1)
DC_AMP (2)
DC_AMP (1)
Factory Key Service Key
8. BLOCK DIAGRAM