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BLOCK and POWER DIAGRAM
AC
IN
LE
T
HD-CD1 BLOCK DIAGRAM
CD MECHA UNIT
COAXIAL
STBY KEY
OPTICAL
H/P JACK
KT690EJZ
IC100
CD DSP
TC94A92FG-301
X302
OSC
IC101
CD MOTOR DRIVER
BA5810FM-E2
IC302
MCU
MB9AF344NAPMC
IC304
AUDIO DAC
CS4398
HDAM LPF
HDAM-SA2
ANALOG LCH
ANALOG RCH
HEADPHONE
OUTPUT
MUTE
IC
3 GAIN CONTROL
NJM2114
H/P AMP
SPDIF
OUTPUT
OUTPUT
+5V
+3.3V
REMOTE
IN
OUT
CONTROL
INT.
EXT.
REMOTE
CONTROL
FOR UPDATE
T3951
MAIN TRANS
T3901
SUB TRANS
S3901
RELAY
HL3-1A-6SH
U3905
REGULATOR
U3901
REGULATOR
NJM2845DL133
U3903
REGULATOR
NJM7805FA
U3904
REGULATOR
NJM2845DL133
U3906
REGULATOR
NJM2845DL1-05
Q3951
TR_NPN
2SD2081
Q3952
TR_PNP
2SB1259
VP
+11V
+5V
+3.3V
+5V
POWER_DOWN
VP
FIP1
FIP2
POWER DOWN
TR
+3.3V
+5V
+12V
-12V
+10V
AC1
AC2
FIP1
FIP2
STBY LED
V F D
FUNCTION KEYS
DISPLAY ON/OFF
LED
IR SENSOR
A/B/C/D/E/F
MO
LD
FO+/FO-
TR+/TR-
SP+/SP-
SL+/SL-
LOAD+/LOAD-
+7V_DRV
VREF
FOO
TRO
FMO
DMO
CLOSE
OPEN
DRIVE_MUTE
BUS2 BUS3 BUCK CCE DECRST
LD_CHK
CLSW
OPSW
INSW
KEY_2
STBY_LED
DIS_SO
DIS_SCL
DIS_CS
DIS_RESET
+3.3V FIP VP
KEY_0
KEY_1
DISPLAY ON/OFF LED
+3.3V
DSP_MCK
DAC_MCK
REMOTE IN
RESET/TX/RX/BOOT
DAC_RESET
DAC_RESET
4MHz
IC301
RESET
S80124CLMCJIJT2
RESET
IC300
EEPROM
24C16
SDA
SCL
CD_SPDIF
CD_SDATA
CD_SCLK
CD_LRCK
16.9344MHz
+3.3V
+3.3V_D1 +3.3V_D2 +1.5V_D1 VREF
+3.3V
+5V_D +3.3V_D
MS/DAC_FLT
M1
MOSI
M3
MS/DAC_FLT
M1
MOSI
M3
L+
L-
R+
R-
CIRCUIT
MUTE
CIRCUIT
A_MUTE
A_MUTE
A_MUTE
+12V -12V
+12V -12V
RESET/TX/RX/BOOT
NJM7805FA
13
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating