Sony HCD-EP40 - Display Board Schematic Diagram; Display and Control Circuitry

HCD-EP30/EP40
2121
MAIN BOARD (2/2)
CN204
D
MAIN BOARD (2/2)
CN302
C
MAIN
BOARD
(1/2)
CN101
A
1
2.4
2.4
2.4
2.4
2.4
2.4
4.7
4.7
3.2
1.6
0 (4.7)[4.7]
0 (4)[0]
1.4 (0)[1.4]
4.6
4.6
4.5
0
5.3
5.2
4.7
5.3
5.2
5.3
2.2
5.2
0 {3.5}
0
0
0
*
4.7
MEGA BASS
ON : 0.1
OFF : 4.7
0
4.7
4.7
2.4
2.9
5.2
4.6
4.3
5.2
5.2
5.2
5.2
5.6
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
(US, CND, E, AUS)
2.4
2.4
(AEP, UK, E, AUS)
(US, CND)
(US, CND, E, AUS)
5.2
5.2
4.7
5.2
0.6
0.6
5.3
5.3
5.3
5.3
5.3
4.7
5.3
5.3
5.3
5.3
5.3
5.3
5.3
5.6
5.6
0 5.6
0 0.1
0
0
0 5.6
0 0.6
(AEP, UK)
SEL2215S-CD
D619
TIMER
LIQUID CRYSTAL DISPLAY
UPD753016AGC-F31-3B9
IC601
SYSTEM CONTROLLER
LIQUID CRYSTAL DISPLAY DRIVER
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
S0
CPU RESET
KEY R3
KEY R2
KEY R1
KEY R0
12/24H SELECT
NC
CD
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
1.8k
1.8k
BUFFER
+
+
0.1
0.1
+
10V
Q602
POWER
ON/OFF
SWITCH
REM601
REMOTE
CONTROL
RECEIVER
REM601
RPM6938
10V
+
0.1
IC602
KEY CONTROL
L934SGC/B
D11-19
(LCD BACK LIGHT)
SW601
SW612
SW613
SW611
SW608
SW610
SW622
SW621
SW605
SW606
SW602
SW604
SW607
MEGA
BASS
SW615
I /1
TAPE
TUNER
REMAIN
CD
TUNER DSPL
x
+
G
O
I
16V
0.0022
(EP40)
RDS
(EP40)
u
REPEAT
SW603
SHUFFLE
MUSIC
MENU
SW614
TUNER MEM
ENTER PGM
TUNING +
M >
SW609
TUNING –
. m
SW605 SW606
–
+
PRESET
SW621 SW622
–
+
VOLUME
IC603
RESET SIGNAL
GENERATOR
IC603
P5290
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
L934SGC/B
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
ZPUSH
OPEN/CLOSE
SW600
DISPLAY BOARD
D604
1N4148AP
D616
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
1N4148TP
0.1
0.1
0.1
(MONO STEREO)
ST t MONO
ISS
2 t 1
0.1
10
16V
1000
6.3V
1N4148TP
180
180
180
1
9
1
9
2.2k
6-8. SCHEMATIC DIAGRAM – DISPLAY Board –• See page 23 for Waveform.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
< > : AM (9 kHz STEP)
〈〈 〉〉 : AM (10 kHz STEP)
( ) : CD PLAY
[ ] : TAPE PLAY
{ } : RECORD
∗
: Impossible to measure
(Page 16)
(Page 17)
(Page 17)
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