Read Sony CMT-EP303 / HCD-EP303 Service Manual online
26
26
HCD-EP303
6-9. Schematic Diagram DISPLAY Section
2.3
2.3
2.3
2.3
2.3
2.3
2.3
5.3
2.3
2.3
5.2
5.2
5.2
5.2
0.9<4.6>
5.2
4.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
3.1
4.7
5.3
4.7
5.2
1.6
<9.7>0.1
<4.7>4.3
3.9
<0>1.4
0.5
0
0
0
0
0.6
0.6
0
4.6
0
0
<4.5>
<4.6>4.3
5.4
<0.1>5.3
0
5.3
0
3
2.5
4.7
4.7
4.7
0
4.7
4.7
0
<4.5>0
0
0
<5.1>.2.6
5.2
<1.9>5.2
4.7
5.3
5.3
5.3
5.3
5.3
5.3
5.3
4.7
5.3
5.4
5.3
5.3
5.4
5.4
5.2
5.2
0.1
MAIN
BOARD
(1/2)
CN101
A
(Page 22)
1N4148
1N4148
1N4148
1N4148
1.8k
2SC945
2SA733
SC945
SC945TR
1N4148
1N4148
1.8k
4.7k
2.2k
1
Q603,604
SWITCH
2
1 : D648, Q604, R668
US, CND model
US, CND model
2 :D618, Q603, R666
EXCEPT AEP,UK model
EXCEPT AEP,UK model
3 :D603
EXCEPT AEP,UK model
EXCEPT AEP,UK model
SEL2215S-CD
2.7k
TIMER
1N4148
Q601,602
BUFFER
0.1
0.1
0.1
18p
20p
6MHz
0.1
0.022
PST529D
O
G
I
10
16V
1N4148
1N4148
1N4148
1N4148
TC4094BF
1N4148
1N4148
1N4148
0.1
22
10V
0.1
1N4148
1N4148
3
MAIN BOARD (2/2)
CN204
D
MAIN BOARD (2/2)
CN302
C
(Page 23)
(Page 23)
DISPLAY BOARD
I/
TAPE
TUNER
CD
MUSIC MENU
MEGA BASS
TUNER MEM
PRESET +
PRESET -
VOLUME -
VOLUME +
TUNING +
REPEAT
SHUFFLE
TUNING -
LED BOARD
COM0
S31
S30
S29
S28
S27
S26
S25
S24
S23
S22
S21
S20
S19
S18
S17
S16
S15
S14
S13
S12
COM1
COM2
COM3
BIAS
VLC0
VLC1
VLC2
TUNER
TAPE
CD
TIMER STATUS
VSS
CD RESET
SURROUND
PLL CL
PLL DI
TUNER SD
CLOCK
DATA
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
IC601
UPD753016AGC
S0
CPU RESET
KEY R3
KEY R2
KEY R1
KEY R0
12/24H SELECT
NC
CD
DATA
DATA
PLLDO
SELECT
X2
X1
IC
XT2
XT1
VDD
DPSW2/SLEND
BASS BOOST
PSW
RDS DATA
SHRST
CE
PLLCE
MUTE
SYNCRO
REMOTE
RDS CLOCK
CD CLOCK
STEREO
IC601
SYSTEM CONTROLLER
LIQUID CRYSTAL DISPLAY DRIVER
LIQUID CRYSTAL DISPLAY
LD621
IC603
RESET SIGNAL
GENERATOR
IC602
KEY CONTROL
(LCD BACK LIGHT)
REM601
REMOTE CONTROL
RECEIVER
REM601
3
• See page 17 for Waveforms.
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