Block Diagram - Bang & Olufsen BeoLab 18 Service Manual

Block diagram

PCB48, NTC
NTC1
GND
P1
PCB48, NTC
NTC1
GND
P1
PCB47, LED Indicator
MIC1_N
MIC2_P
GND
LED_4_G
LED_3_R
LED_2_O
LED_1_W
P1
PCB2.1, Digital Connector
GND
3V3_SB
TOSLINK_IN
TOSLINK_GND
TOSLINK_OUT
3V3
ATI_TX
ATI_RX
ATI_ON_N
P102
PCB2.2, Analogue Connector
PL_DATA
PL_ON
PL_RIGHT
PL_GNDA
PL_LEFT
PL_GNDD
LINE_RIGHT
LINE_GND_SENSE
LINE_LEFT
LINE_IN_IMP
GND
PRODUCT_ID1
PRODUCT_ID1
BUTTON1
S2_FREE
S2_WALL
S2_CORNER
S3_LEFT
S3_OTHER
S3_RIGHT
P101
PCB04, Power Supply
GND
+5V_SB
PS_ON
P1
PWR_NTC
MAINS_FAIL
P3
+15V
GND
-15V
P5
+28V
+15V
GND
-15V
-28V
P4
Block diagram
PCB30, Digital Sound Engine
AMP_EN_N
DC_ERR_N
P3
3V3_SB
MUX
ADC_MUX
ADC_MUX_AX
PS_ON
P3
MAINS_FAIL
PWR_NTC
AUDIO_MUX_SEL
ADC_MUX_AX
LED_4_G
FEP EMC
LED_3_R
LED_2_O
LED_1_W
P3
FEP_ATI_TX
ATI Level
FEP_ATI_RX
P2
A MUX
MIC1
PL_DATA
Diff.
PL_ON
CAL
AMP
MONITOR1
MONITOR3
Diff.
AMP
Diff.
AMP
B MUX
MIC2
Diff.
AMP CAL
MONITOR2
MONITOR4
P1
ROLE/POS.
SWITCH
Calibration
PS_ON CAL
Generator
PWR_NTC
MAINS_FAIL
P3
+5V_SB
Line sense
P3
6.1 6.1 Block diagram
NTC1
PL_DATA
PL_ON
UART_TX
UART_RX
LINE_SENSE_LINE
3V3
LINE_SENSE_PL
FLASH
CODEC_RESET_N
DAC_RESET_N
ROLE/POS. SWITCH
SD0
WAKE_ON_SPDIF
SCLK
DSP
LRCLK
3V3_SB 3V3
TOSLINKK_IN
TOSLINKK_OUT
ATI_ON_N
AUDIO_MUX_SEL
CODEC_RESET_N 3V3A
Gain 0dB
ADC_1L
ADC DAC
Gain 20dB
ADC_1R
ADC_2L
Gain 0dB
ADC_2R
Gain 20dB
ADC0
ADC1
ADC DAC
ADC2
ADC3
CODEC_RESET_N DAC_RESET_N
5VA
5VA
TRAINING
LINE_SENSE_PL
LINE_SENSE_LINE
PCB89, Wireless Power Link Rx
LRCLK
SCLK
GND
SD0
UART_TX
UART_RX
nLINK
nHEARTBEAT
PING1
nAMP_ERR
nDET1
PING0
nMUTE
nDET0
SCL
nSLEEP
nRESET
SDA
1V2
3V3
P7 P7
+15V
-15V
DC/DC
+5V_SB
CON _PWR_CTRL
3V3_SB
3V3
3V3_WL
1V2_DISP 2V5_REF_SB
1V2_WL
1V2_DISP
DAC UNBAL
Filter to
BAL
GNDA
CH1_N
NTC1
CH1_P
MONITOR1
CH2_N
AMP_EN_N
CH2_P
MONITOR2
DSE_GND1
CH3_N
CH3_P
MONITOR3
CH4_N
DC_ERR_N
CH4_P
MONITOR4
DSE_GND2
P4
6.1
Antenna
Antenna
Antenna
Antenna
12V
-12V
5VA
5V_USB0
5V_USB1
3V3
3V3A
3V3_CON
3V3_SB_CON
PCB35, Amplifier
Tweeter
P1
P2
Woofer
P2
Woofer
P3 P2