Harman Kardon AVR-254 Schematic
123456
38
D
C
ANALOG FRONT IN
STEREO or iPod IN
B
A
ANALOG 5 IN
ANALOG 4 IN
ANALOG 4 OUT
ANALOG 3 IN
ANALOG 2 IN
ANALOG 2 OUT
ANALOG AUDIO
ANALOG 1 IN
USA VER. ONLY
MODULE
XM_RADIO
( iPod )
THE BRIDGE II
COMPOSITE 3 IN
COMPOSITE 2 IN
COMPOSITE 2 OUT
COMPOSITE 1 IN
S-VIDEO 3 IN
S-VIDEO 2 IN
S-VIDEO 2 OUT
S-VIDEO 1 IN
ALL version
has TUNER module.
XM IN
iPod IN
D-
D+
iPod L/R
iPod TX
iPod RX
iPod CVBS
Y
C
Y
C
XM_LRCK
XM_DT
USA VER. ONLY
TMP86F409NG
(8BIT u-COM for iPod)
AVR354 & 355 OPTION
AVR354 & 355 OPTION
THE BRIDGE II
FRONT VIDEO
V3
V2
V1
FRONT VIDEO
V3
V2
V1
Y
C
Y
C
FRONT VIDEO
V3
V2
V1
TUNE R
MODULE
DATA CLOCK
XM_DAT
XM_BICK
XM_MCK
Y
C
AK4384
AVR354 & 355 OPTION
THE BRIDGE II IN
COMPOSITE FR ONT IN
CONT
+6dB
+6dB
+6dB
NJM2595
S-VIDEO FRONT IN
CONT
+6dB DRV
+6dB DRV
NJM2595
CONT
+6dB DRV
+6dB DRV
NJM2595
DRV
DRV
DRV
VIDEO SWITCHING CONTROL BY MCU
TO FUNCTI ON SEL
TUNER L /R
TUNER CONT
NJW1197FC2
XM_L
2CH DAC
XM_R
iPod IN
iPod CONT
iPod CVBS
FROM THE BRIDGE II
( iPod )( iPod CVBS )
FROM FRONT
CVBS
FLI30336 ANALOG INPUT
FROM FRONT
S-VID Y
FLI30336 ANALOG INPUT
S-VID C
FLI30336 ANALOG INPUT
A-BUS OUT
AVR355 OPTION
MULTI _OUT
AVR354&355 OPTION
SBL/R
6/8 CHANNEL INPUT
CEN/SU B
HDMI MCLK
HDMI SCLK
HDMI LRCK
HDMI SD
ST232CDR
RS232C
SDRAM
32M
NJM2566 ANALOG OUTPUT
COMPOSITE MONI TOR OUT
S-VIDEO MONITOR OUT
NJW1159
2CH
VOL
MULTI_ MUTE * 2E A
FL/R
SL/R
HDMI_IN2
SII9185
(SW IC)
SII9135
(HDMI RX)
I2C & G PIO CONTROL
FLI30336
TORI NO
(SCALER) (DAC)
CVBS_TORINO IN
S-VID Y_TORINO IN
S-VID C_TORINO IN
DDR SDRAM
256M * 2EA
Y
C
DIGITAL VIDEO
MAX : 1080p
Y1/2/3__TORINO IN
Cb1/2/3_TORINO IN
Cr1/2/3_TORINO IN
RT
LT
6dB AMP
ATT
HDMI_OUTHDMI_IN3HDMI_IN1
SII9134
(HDMI TX)
I2C & G PIO CONTROL
COAX.&OPT. FRONT
I2S/DSP_SPDIF
HDMI_SPDIF
I2S
I2S
I2S
ADV7342
CONTROL BY D AC
NJM2566
6dB
REMOTE OUT
6CH VIDEO OUT
CVBS_OUT
S-VID Y_OUT
S-VID C_OUT
Y_OUT
Cb_OUT
Cr_OUT
FLI30336 ANALOG INPUT
Y1
Y2
Cb1
Cb2
Cr1
Cr2
Y3
Cb3
Cr3
NJM2566 ANALOG OUTPUT
COMP_Y_OUTPUT
COMP_Cb_OUTPU T
COMP_Cr_OUTPU T
COMMUNICATION BETWEEN TORINO & TOSHIBA MCU
UART RX/TX
COAX.2
COAX OUT
A-BUS IR IN
CARR. OUT
ZONE2 IN
REMOTE IN
OPT.1
OPT.2
OPT.3
COAX.1
COMPO
INPUT1 INPUT2
Y
Cb
Cr
D_FL
COMPO
Y
Cb
Cr
D_SL
D_SR
D_FR
D_SW
LT AINR
RT
I2S/DSP_SPDIF
COMPO
INPUT3
Y
Cb
Cr
AVR354 & 355 OPTION
Y
Cb
Cr
AVR254/255/354/355 BLOCK DIAGRAM
MIC_AMP
+12V
SUB TRANS
HP_IN
+40dB
H_PH ONE OUT
MIC_ INPUTor
D
1
+
FL
-
2
3
+
FR
-
4
5
+
SBL/ZONE2 LEFT
-
6
7
+
SBR/ZONE2 RIGHT
-
8
9
10
1
SL
2
3
SR
4
5
CEN
6
C
M/P
ISSUE
ANAM
MULTI. LAB
2008.02.25
POWER S/ W
B
AC OUTLET
ANALOG FRONT
COMPOSITE F RONT
4
5
BLOCK DIAGRAM
AC IN
6
7
2024BLDZ
SHEET
1
1
A
1
1
TONE
PRE -OUT
PRE AMP
+
FRONT L
FRONT L
FRONT R
P-AMP
+29dB
P-AMP
+29dB
MAIN AMP
+8dB
HP_AMP
MIC SI G.
+12V
PRE AMP
TONE
+
SBL/MULTI L
FRONT R
+
+
PRE AMP
PRE AMP
+
PRE AMP
+
SURR L
SURR R
CEN
SUBWOOFER
PRE AMP
PRE AMP
+
SBL/MULTI L
+
PRE AMP
SBR/MULTI R
SURR L
SURR R
CEN
TO TORINO PA RT
+5V
+1.8V
TO VIDEO PART
+5V
TO XM PART
(TO VID EO PART)
+5.3V
TO TORI NO PART
REGULATOR
(+1.8V)
TO DSP PA RT
+5VD
SBR/MULTI R
TO VIDEO PART
(TO IPOD PA RT)
+9V
D_SW
D_CNT
D_SBL
D_SBR
D_CNT
D_SBL
AINL
DIN
DOUT
COMPONENT MONITOR OU T
D_SBR
D_SL
DIR CONT
DO
DSP MCLK
HDMI MCLK
HDMI MCLK
D_SR
DIR MCLK
D_FR
D_FL
ADUTA1+
ADUTA1-
ADUTB1+
A/D, D/A CONVERTER WITH DIR
MCLK
XMCK
RMCK
RDATA
RBCK
RLRCK
OMCK
A-BUS_IR OUT
74VHC157
2CH MUX
REMOTE IN
CARR. OUT
MULTI_IR IN
I2S
I2S
ADUTB1-
ADUTA2+
CS42528
RST
CLKIN
XMCK
CMPDAT
CMPCLK
CMPREQ
DAOMCLK
DIR CONT
ADUTA2-
ADUTB2+
SDIN1
AUDATA0
CS497004
DSP CONT
FUNC. SW CONT
VOL CONT
TOSHI BA
16BIT u-COM
KEY
VFD CONTR OL
ST232CDR
ADUTB2-
SDIN3
SDIN2
AUDATA1
AUDATA2
DSP
MUTE CONT
VR ENC
ADUTA3+
ADUTA3-
SCLK1
SDIN4
AUDATA3
SCLK0
LRCLK0 LRCLK1
ADDRESS&DATA
PH DET
TUNER CONT
RDS CONT
STANDBY
REMOTE ENC
ADUTB3+
POWER DOWN
XM CONT
ADUTB3-
ADUTB4+
24.576MHz
ADUTB4-
XIN
XOUT
HDMI SD
HDMI LRCK
HDMI SCLK
SPI Serial Flash
8 Mbit
M12L16161A
16M SDRAM
EEPROM (32 Kbit)
RST IC
POWER AMP CONT
iPod Buffer IC CONT
VIDE O SWITCH ING CONT
FOR BACK-UP MEMORY.
RS232C
** EEP_ROM **
TO VIDEO PART
-9V
REMOTE SENSOR
AMBER/BLUE
STANDBY
MOMS SWITCH
REGULATOR
(+9V)
(-5V)
+VCC1
-VCC1
+VCC2
-VCC2
FLFL+VKK
FL DISPLAY
KEY0~2
Temp. Sensor
POWER
AMP
MUTE
P_LI NE_ FAI L
(+5V)
+12V
TO DSP PA RT
+15V
-15V
TO A-BUS PART
+24V
KEY MATRIX
P-AMP
+29dB
P-AMP
+29dB
P-AMP
+29dB
P-AMP
+29dB
P-AMP
+29dB
UNBAL
DETECT
UNBAL
DETECT
+9VDH
+9VDH
TEMP I /F
PROTECT
REGULATOR
REGULATOR
REGULATOR
REGULATOR
REGULATOR
REGULATOR
(MASTER VR)
VOLUME Indicator
(+5V)
(+9V)
(+1.8V)
(+5V)
(+12V)
( 15V)
( 24V)
ROTARY
ENCODER
(BLUE)
VR ENC
DC/OVER CURRENT
SENS
HEAT2
+5VL REG
+5VL
PWR DOWN
P-DOWN
STANDBY
S-VIDEO FRONT
OPT.FRONT
COAX.FRONT
REVISION
1
2
3
SCHEMATIC DIAGRAM
MODE L
DESIGN CHECK APPROVE DRAWING NO
S.H.Yang G.S.Wey
08.02.25
AVR254/255/354/355
W.Y.Yang
08.02.25 08.02.25
176
AVR254
harman/kardon
177
AVR254
harman/kardon
178
AVR254
harman/kardon
179
AVR254
harman/kardon
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