Sony CMT-EP505 / HCD-EP505 Service Manual ▷ View online
13
HCD-EP505
Adjustment Location and Connecting Points
– MAIN BOARD (Component Side) –
T402
AM Frequency
Coverage Adjustment
T406
AM IF Adjustment
AM Tracking Adjustment
{
TC401
T401
T401
– MAIN BOARD (Conductor Side) –
TP
(FM VT)
TP
(AM VT)
TP
(FM ANT)
HCD-EP505
15
15
AM
RF AMP
AM
OSC
AM
MIX
L. P. F
FM/AM PLL
U403
FM/AM PLL
U402
AM/FM
IF BUFFER
DECODER
• SIGNAL PATH
: FM
: AM
X401
7.2MHz
AMIN
IFIN
IF OUT
FM/AM
IO1
AOUT
AIN
FMIN
20
1
14
13
18
SWALLOW
COUNTER
UNIVERSAL
COUNTER
CCB
INTERFACE
REFERENCE
DIVIDER
UNLOCK
DETECT
12 BIT
PROGRAMMABLE
DIVIDER
PHASE
DETECTOR/
CHARGE PUMP
SHIFT REGISTER & LATCH
1/2
DI
CL
CE
DO
DA IN
STATION
STEREO
FM
ON/OFF
TU-L
R-CH
R-CH
EMP OUT
L IN
L OUT
EMP OUT
RCLK
RDATA
RCLK
RDAT
MUX
TU-R
CLOCK
PLL CE
DA OUT
PD
XIN
XOUT
3
4
2
5
11
BO1
6
10
17
16
• R-ch is omitted due
to same as L-ch.
to same as L-ch.
CN402
CN401
U401
FM TUNER PACK
CF401
T401
AM RF
T402
AM OSC
D405
VT
CF402
CF403
1
5
8
AMRF
AM-IF
FM-IN
FMDET
EMP IN
AM DET
AMMIX
OSC
RF IN
OSC
IF OUT
OSC OUT
OSC OUT
6
1
23
2
30
4
27
29
24
5
10
22
16
FMRF IN
FMIF
FMRF OUT
13
FM DET
1
AMRF IN
3
AM
OSC
OSC
8
AMOSC
BUFFER
20
FMOSC
15
AM/FM SW
7
AM/FMIF
BUFFER
FM
MIX
L OUT
R OUT
17
3
CE
DO
6
4
DI
20
XOUT
1
XIN
CL
5
CF401
9
11
AMIF
7
BO1
7
IFIN
20
AOUT
19
AIN
18
PD
FMIN
AM
MIX
CF404
CF406
TC401
DET
AM IF
AGC
CF404
FM
DET
FM IF
24
22
20
21
19
17
MUTING
13
14
TULED
6
STLED
7
BUFFER
Q405
4
16
2
X304
4.332MHz
RDS DECODER
IC305
FM/AM IF AMP,
AM RF AMP/MIX/OSC,
FM/AM DET, MPX
U402
14
13
XI
XO
E
(Page 17)
A
(Page 18)
D
(Page 18)
B
(Page 17)
FM ANT
75Ω
COAXIAL
AM ANT
AM FREQUENCY
COVERAGE
T402
AM
TRACKING
L401, TC401
AM IF
T406
FMDET
9
T407
FM DET
L. P. F.
T404
L. P. F.
FM/AM BAND
SELECT SWITCH
Q404
BPF
BPF401
FM IF AMP
Q403
L407
AM RF
L408
AM OSC
D407
TC402
AM FREQUENCY
COVERAGE
L408
AM TRACKING
L407, TC402
FM TRACKING
TC401
TC401
PHASE
DETECTOR/
CHARGE PUMP
(AEP, UK)
(EXCEPT AEP, UK, CH)
(AEP, UK, CH)
FM/AM IF AMP,
AM RF AMP/MIX/OSC,
FM/AM DET, MPX
U401
AM IF
T401
TU-L
R-CH
TU-R
DA IN
CLOCK
PLL CE
DA OUT
AGC
12
16
AMIN
15
BUFFER
Q404
STATION
STEREO
FM/AM BAND
SELECT SWITCH
Q403
FM OSC BUFFER
Q401
L. P. F
X401
7.2MHz
(AEP, UK, CH)
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – TUNER Section –
Ver 1.1
HCD-EP505
16
16
: RECORD
: TAPE PLAY
REC/PB SWITCHING
U601
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
ALC,
REC/PB AMP
U602
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
R-CH
Q618
R-CH
L-CH
HPRE101 (1/2)
(RECORD/PLAYBACK)
R-CH
R-CH
REC-EN
16
2
6
7
3
4
4
8
7
9
(PROTECT (FWD) DETECT)
(PROTECT (REV) DETECT)
(TAPE DETECT)
(CrO
2
DETECT)
REC/PB
SWITCH
Q605
REC/PB
SWITCH
Q601
AMP GAIN
CONTROL
Q603
ALC
CONTROL
Q619
ALC
BIAS
TRAP
CAPSTAN/REEL
MOTOR DRIVE
Q620, 621
SENSORA
90
AMS
96
SEL14
70
SEL15
SEL12
68
SEL10
66
BIAS OSC
L603
9V
REC BIAS
SWITCH
Q617, 618
M
(CAPSTAN/REEL)
SOL
93
TRIGGER
PLUNGER DRIVE
Q622, 624
(TRIGGER PLUNGER)
REC-LED
18
LED
DRIVE
Q305
D313
SYSTEM CONTROLLER
IC301 (1/3)
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
(HEAD POSITION DETECT)
MOTOR-ON
95
CD-EN 92
TU-EN
CD-EN
TU-EN
94
D305
D306
D308
D603
D601
TIME
13
LED
DRIVE
Q304
D312
I
(Page 18)
TL-CH
TR-CH
RL-CH
RR-CH
F
(Page 17)
TROUT
6
V.N
1
AMS
U603
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
HPRE101 (2/2)
(ERASE)
SWITCHING
R-CH
z
TIMER
BUFFER
Q625
BUFFER
Q613
TAPE PLAY/REC DETECT
SENSOR
REC AMP
Q611
MUTING
Q607
TAPE TYPE
SELECT SWITCH
Q609
G
(Page 18)
71
BIAS OSC
Q615
ALC
IN1
OUT1
ALC
CONST
IN1
NF1
• SIGNAL PATH
• R-ch is omitted due to same as L-ch.
6-2.
BLOCK DIAGRAM – TAPE DECK Section –
Ver 1.1
HCD-EP505
17
17
6-3.
BLOCK DIAGRAM – MAIN Section –
: RECORD
: TAPE PLAY
: CD PLAY
: TUNER
EEPROMDATA
INPINENA
SYSTEM CONTROLLER
IC301 (2/3)
EEPROM
IC302
CDDATA
CDCLK
CDRESET
L3
L4
F
(Page 16)
RL-CH
TL-CH
RR-CH
TR-CH
DI
CE
X2
X1
X301
4.194304MHz
80
75
EEPROMCLK 77
79
CD DOOR SW 91
17
MUTE 21
15
CL
14
LT
4
5
16
12
3
14
88
15
SOUNDENA
DATAOUT
CLK
19
73
74
DATAIN
72
PLLENA
20
SDA
5
SCL
6
10
9
L2
L1
LTOUT
2
11
B
(Page 15)
L
R
1
LVROUT
LVRIN
30
RVROUT
R-CH
R-CH
R-CH
CD-L-IN
CD-R-IN
CD BLOCK
INPUT SELECT SWITCH,
ELECTRICAL VOLUME
U501
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
R-CH
SOUND
CONTROL
CIRCUIT
R-CH
R-CH
MEGA BASS
CONTROL SWITCH
Q504
R-CH
PHONES
CN503
CD DO
CD CLK
CD \RESET
+
+
–
–
INPUT SELECT
SWITCH
SELECT SWITCH
SWITCH
LTCOM
4
LT
3
6
LT
2
7
LT
1
8
+9V
R-CH
R-CH
E
(Page 15)
TU-R
TU-L
DA IN
CLOCK
DA OUT
STEREO
76
STEREO
STATION
6
STATION
PLL CE
R-CH
D506
D505
D507
H501
Z
PUSH
OPEN/CLOSE
SW300
HEADPHONE
AMP
U503
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
MUTING
Q501
MUTING
Q505
SPEAKER
IMPEDANCE
USE 8Ω
POWER AMP
U502
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
Ver 1.1
Click on the first or last page to see other CMT-EP505 / HCD-EP505 service manuals if exist.