Block Diagram - Marantz MM8003 Service Manual

8. BLOCK DIAGRAM

INPUT PART
FL
BALANCED
FR
SL
BALANCED
SR
SBL
BALANCED
SBR
CNT
BALANCED
OPT
CPU PART
Flasher IN
OUT
REMOTE CONTROL
AT24C04 SCL
IN
SDA
DC IN
OUT
S-80145ALMC
DC OUT
DOWN LOAD S/W
FL FL
+15V FR
UNBALANCED
FL
BUF
SL
FR
BUF
SR
+15V
FR
SBL
SL
SBR
+15V
CNT
UNBALANCED
SL
BUF
OPT
SR
BUF
+15V
SR
SBL
+15V
UNBALANCED
SBL
BUF
SBR
BUF
+15V
SBR
CNT
+15V
UNBALANCED
CNT
BUF
OPT
BUF
+15V
OPT
+5VL KIA78D33F
_AVSS_DET1
+5VL
SPK_ON1-4
I2C_SCK _HEAT_DET1-4
FAN1-2
I2C_DATA
R5F21246SNFP
STANDBY1-2
_P_AMP_FAIL
RESET
_P_LINE_FAIL
+5VL
+ 3 3 . V L + 3 3 . V L
+5VL +5VL +5VL
Factory Key Service Key
19
AMP PART
FL FL
FR FR
SL SL
SR SR
SBL SBL
SBR SBR
CNT CNT
OPT OPT
_HEAT_DET_1 _HEAT_DET_2 _HEAT_DET_3 _HEAT_DET_4
LM94022BIMG LM94022BIMG LM94022BIMG LM94022BIMG
+VCC
FRONT PART
STAND BY
POWER
POWER ON/STAND BY
POWER & STANDBY PART
+18V
+12V
+12V
REGULATOR
+15V
-15V
HEAT
UNBALANCED
_P_LINE_FAIL
DETECT
+35V
+3.3VL -35V
+VCC
-VCC
FL FL
FR FR
+18V
SL SL
FL_LEVEL
SR SR
FR_LEVEL
SBL SBL
SL_LEVEL
SBR SBR
SR_LEVEL
CNT CNT
SBL_LEVEL
OPT OPT
SBR_LEVEL
DC_AMP (1)
DC_AMP (2)
CNT_LEVEL
CURR_AMP (1)
CURR_AMP (2)
OPT_LEVEL
_AVSS_DET1
FAN & PROTECTION PART
FAN
+18V
DC_AMP (1)
_P_AMP_FAIL
DC_AMP (2)
CURR_AMP (1)
_P_CURR_FAIL
CURR_AMP (2)
FAN1-2
+18V
SUB TRANS
REGULATOR
MAIN TRANS
+15V
REGULATOR
-15V
REGULATOR
POWER P_DOWN STANDBY2
DOWN
+5VL +5VL
REGULATOR STANDBY1
20
FL
FR
SPK_ON4
SL
SR
SPK_ON3
SBL
SBR
SPK_ON2
CNT
OPT
SPK_ON1
POWER S/W
AC OUTLET(Only U ver)