Read Sony CMT-EP505 / HCD-EP505 Service Manual online
HCD-EP505
29
29
IC B/D
3
4
0
4
0
4.8
4.8
4.8
4.8
0
5.8
4.8
5.2
5.4
∗
∗
4.2
(AEP, UK)
(EXCEPT AEP, UK)
∗
4.2
2
2
1.5
4
4
2.1
2.1
∗
0
2.1
5.4
4.8
2.5
2.3
4.8
4.8
4.8
5.4
5.4
2 (0)
4.9
0
0 (4.8)
0
4.8 (0)
0
4.8
0
4.9
4.9
4.9
4.9
4.9
5.4
∗
4.8
4.9
0
1.5 (5.1) <1.5>
4.8
<0> {4.8}
0
<0> {4.8}
0
0
0
4.8
2.4
2.4
2.4
2.4
4.8
4.8
3.2
1.6
2.4
2.4
4.3
(4.3)
<0>
0
0
0
0
4.1
(0)
(0)
<4.1>
0
4.8
<0> {0.7}
<4.3>
{0.2}
4.8
4.9
J306 0
(EXCEPT AEP, UK, CH)
(EXCEPT AEP, UK, CH)
R374 47K
A0
A1
A2
A3
VCC
TEST
SCL
SDA
IC302
IN
GND
OUT
RPM7138-V4
X302
REMOTE CONTROL
RECEIVER
IC304
RESET SIGNAL
GENERATOR
GND
SUPPLY
OUT
QUAL
RDAT
VREF
MUX
VDD1
VSS1
VSS3
CMP
RCLK
NC
XO
XI
VDD2
VSS2
T1
T2
IC305
RDS DECODER
BUFFER
(AEP, UK)
ROTARY
ENCODER
VOLUME
SWITCHING
Q306
RESET
SWITCH
50V
0
100U10V
33p
10V
50V
0
SEL2215S-CD
TIMER
MUSIC MENU
TUNING +
TUNING −
DISPLAY
TUNER MEM/ENTER
PLAY MODE
RDS/DIR
PLAY MODE
DIR
SW305
SW305
CD
TUNER MEM/ENTER
TAPE
TUNER/BAND
SEL2910D SEL2910D SEL2910D
D901 − 903
LCD BACK LIGHT
MEGA BASS
2
3
4
5
6
7
8
9
10
11
13 12
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
1
CN301
LIQUID CRYSTAL DISPLAY
Q307
536N
536N
D304
1N4148
R375
47K
IC301
SYSTEM CONTROLLER,
LIQUID CRYSTAL
DISPLAY DRIVER
DISPLAY DRIVER
µPD780306GC-A68-8EU
6.3V
SEL2215S-CD
LED
0
DISPLAY BOARD
A
MAIN BOARD
CN305
F
MAIN BOARD
CN305
B
MAIN BOARD
CN303
D
MAIN BOARD
CN302
C
MAIN BOARD
CN307
PUSH
OPEN/CLOSE
SW300
LED DRIVE
50V
10V
PRESET +
PRESET −
(US, CND, E51, MX, AR)
(HK)
(AEP, UK, HK, CH)
(AEP, UK, CH)
(AEP, UK, HK, CH)
(HK)
(EXCEPT US, CND)
(US, CND, E51, MX, AR)
(AEP, UK, CH)
(EXCEPT AEP, UK, CH)
(AEP, UK, CH)
(AEP, UK, CH)
11
1
11
1
9
G
MAIN BOARD
CN303
(EXCEPT AEP, UK, CH)
( AEP, UK, CH)
( AEP, UK, CH)
1
3
1
7
I
MAIN BOARD
CN302
H
MAIN BOARD
CN307
Q308
608N
608N
Q307, 308
AM FREQUENCY STEP
SELECT SWITCH
6-15. SCHEMATIC DIAGRAM – DISPLAY Section –
•
See page 19 for Waveforms.
•
See page 33 for IC Block Diagram.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
(
no mark : TUNER
(
) : CD PLAY
<
> : TAPE PLAY
∗
: Impossible to measure
(Page 21)
(Page
22)
(Page
22)
Ver 1.1
(Page
26)
(Page
26)
(Page 25)
(Page 21)
(Page 25)
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