Sony HCD-F250AV / MHC-F250AV Service Manual ▷ View online
HCD-F250AV
— 25 —
When a general remote commander is not used:
1.
1.
Solder lead wires to TP (DVDD) and TP (TOFF) on the BD
board severally.
board severally.
2.
Connect the oscilloscope to TP (TE) of the BD board.
3.
Press the 1/u button to turn ON the power.
4.
Open the front cover, and press the CD PLUS ONE button.
5.
Set the disc (YEDS-18) into the “PLUS ONE” slit.
6.
Close the front cover, and chuck the disc.
7.
Playback the fifth track of the disc.
8.
Short-circuit the lead wire connected at step 1. (The tracking
servo is turned OFF)
servo is turned OFF)
9.
Check the level B of the oscilliscope's waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 10%
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 10%
10. Disconnect the lead wire short-circuited at step 8. (The tracking
servo is turned ON.) Confirm the C (DC voltage) is almost equal
to the A (DC voltage) is step 8.
to the A (DC voltage) is step 8.
11. Turn OFF the power, and remove the lead wire connected at
step 1.
RF PLL Free-run Frequency Check
Procedure :
1.
1.
Connect the frequency counter to TP (PLCK) of the BD board.
Adjustment Location :
[ BD BOARD ] — CONDUCTOR SIDE —
2.
Press the 1/u button to turn ON the power.
3.
Open the front cover, and press the CD PLUS ONE button.
4.
Set the disc (YEDS-18) into the “PLUS ONE” slit.
5.
Close the front cover, and chuck the disc.
6.
Playback the fifth track of the disc.
7.
Confirm that reading on frequency counter is 4.3218 MHz ±
30 kHz.
30 kHz.
[ MAIN BOARD ] — COMPONENT SIDE —
oscilloscope
BD board
TP (TE)
TP (VC)
TP (VC)
Traverse waveform
A (DC voltage)
B
Center of the waveform
level : 0.7
±
0.3 Vp-p
0V
Traverse waveform
0V
C (DC
Tracking servo
OFF
Tracking servo
ON
voltage)
frequency counter
BD board
TP (PLCK)
IC102
IC101
TP
(VC)
TP
(TE)
TP
(FE)
TP
(RF)
TP
(PLCK)
CN101
CN102
CN103
TP
(DVDD)
TP
(TOFF)
RV301
RV351
CN106
CN301
CN107
CN302
IC301
HCD-F250AV
— 27 —
— 28 —
6-1. BLOCK DIAGRAM — CD SECTION —
SECTION 6
DIAGRAMS
OPTICAL PICK-UP
BLOCK
(KSS -213 B/S-N)
LD
DRIVER
Q103
A+5V
LD
GND
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
IC103
FCS/TRK COIL
SL/SP MOTOR
SL/SP MOTOR
DRIVER
SLED/SPINDLE SERVO
RF AMP
IC101
18
22
T IN
17
19
20
VR
PD
8
7
6
5
15
F IN
10
SL IN
3
SP IN
2
MUTE
F+
F
T+
T
SL+
SL
SP+
SP
M
M
MOTOR
M102
SLED
MOTOR
M101
SPINDOL
S101
LIMIT
VDD
D IN
GND
A+5V
CD
DIGITAL
OUT
IC402
16
:CD
:DIGITAL OUT
• SIGNAL PATH
41
RF SM
VR
58
7
VCC
8
VC
4
A
2
B
1
C
5
D
6
E
10
F
DETECTOR
FOCUS/TRACKING/
FIN 1
2
FIN 2
1
E
3
F
4
LDD
62
LDS
63
FD
16
TO
15
SLD
29
SPD
27
52
DATA
50
CLK
51
CL
53
CE
34
TGL
54
DRF
39
CV-
40
CV+
Q101
30
SL-
Q102
31
SL+
35
TOFF
44
SLI
49
DEF
36
TES
37
HFL
33
JP+
32
JP-
DIGITAL SIGNAL
PROCESSOR
IC102
EFMI
10
EFMO
9
DEF
1
TES
16
HFL
15
JP+
19
JP-
20
COIN
56
4.2M
61
CQCK
57
RWC
54
TGL
18
TOFF
17
CONT3
26
CLV+
12
CLV-
13
CONT4
27
31
D OUT
49
PW
CD TEXT
DECODER
IC104
SBSO
2
WFCK
4
MCK
5
FXCK
1
SCOR
3
12
SRDT
11
SCLK
13
DQSY
6
XMODE
50
SFSY
60
16M
51
CBCK
47
SBSY
53
WRQ
55
SQOUT
3
RD
45
XI
44
XO
X101
16.9344M
37
L CH
40
R CH
R CH
58
RESET
CD CHANGER
CONTROL
IC401
80
IIC DATA
78
IIC CLK
66
65
64
67
55
49
SRDT
SCLK
DQSY
XMODE
WRQ
SQOUT
COIN
50
DB RESET
2
CQCK
48
RWC
58
TGL
57
DRF
54
SL+
47
SL-
59
XTAL
32
EXTAL
31
X401
D151
IC461
MOTOR DRIVER
8
9
11
10
L+
L
T+
T
M
M
MOTOR
M61
LOADING
MOTOR
M62
TABLE
3
2
16
17
L+
L
T+
T
LD OUT
76
LD IN
77
TBL L
75
TBL R
74
30
RESET
42
D SENS
FILTER AMP
IC441
8
15
8
D0
D7
A0
A14
SRAM
IC411
WE
27
20
CE
29
WE
RESET
SW
Q411
U+5V
D51
DISC
SENSOR(S)
Q51
DISC
SENSOR
62
TSENS 1
D51
D402
61
TSENS 2
70
UP SW
71
DOWN SW
69
DOOR SW
63
TSENS 3
TABL
SENSOR
IC51-53
S51
(UP)
S52
(DOWN)
S413
(DOOR)
RESET
IIC DATA
IIC CLK
CD L
TO/FROM
MAIN
BLOCK
(Page 29)
(Page 29)
B
HCD-F250AV
— 29 —
— 30 —
6-2. BLOCK DIAGRAM — MAIN SECTION —
: FM
: CD
• Signal Path
• RCH is omitted
: PB
: REC
R CH
R CH
SOUND
CONTROL
IC101
B NORM/CROM/MET
AL
19
R CH
L
R
L
R
L
R
VIDEO/
MD
OUT
PB
IN A
69
REC B
57
REC A
58
MIC IN
2
D
ATA
33
CLOCK
32
LA
TCH
34
36
L OUT
59
S OUT
60
KIY
IN B
66
IN C
67
IN D
68
40
VOL
D
ATA
CLOCK
LA
TCH
ST L
MIC
J782
IC781
IC781
ST D OUT
ST D IN
ST CLK
ST CE
TUNED
STEREO
ST MUTE
CN102
TO/FROM
TUNER
R CH
UNIT
CD L
RESET
CN106
A PB L
B PB L
REC L
BIAS
RELAY
48
46
36
32
33
DOLBY
B-NR
40
43
MS OUT
26
REC/PB P
ASS
24
NROM/HIGH
18
PB A/B
16
LN ON/OFF
25
NR ON/OFF
23
RN ON/OFF
22
BIAS ON/OFF
20
A
120/70
17
ALC ON/OFF
15
DOLBY PROLOGIC
MATRIX DECODER
IC301
BIAS
BIAS
EQ
CN107
B 120/70
A 120/70
SYSTEM
CONTROL
IC501
TC RELAY
97
88
R/P
P
ASS
A PLAY
95
B PLAY
96
A HALF
98
B HALF
28
A SHUT
26
B SHUT
27
31
AMS IN
93
EQ H/N
94
PB A/B
87
TC MUTE
89
NR ON/OFF
90
REC MUTE
92
BIAS
99
ALC ON/OFF
66
ST
D IN
CAP
H/L
82
CAPM CMT1M
85
CAP
CTM2M
86
CAPM CNT1P
17
CAP
MOTOR
DRIVE
A
TRG
84
B TRG
83
Q335-343
TRG
MOTOR
DRIVE
Q331-334
A PLAY
B PLAY
A HALF
B HALF
A SHUT
B SHUT
A TRG M+
B TRG M-
CAP M H/L
CAP M+
CAP M-
TO/FROM
TC
BLOCK
67
ST
D OUT
65
ST
CLK
68
ST
CE
69
TUNED
70
STEREO
72
ST
MUTE
3
LA
TCH
51
CLK
52
D
ATA
TUNED
STEREO
ST
MUTE
LA
TCH
CLOCK
D
ATA
ST
D IN
ST
D OUT
ST
CLK
ST
CE
Q113
MUTE
DBFB
SWITCH
Q111,112
39
BB A
38
BB B
POWER
AMP
IC801
1
6
10
OVER
LOAD DET
Q801
HEAT
SENSOR
Q811,812
+B
D813
Q141
SURROUND
PROCESSOR
IC201
L IN
24
LT IN
61
33
S OUT
31
C OUT
D
ATA
53
D
ATA
51
CLK
50
CLK
54
ENABLE
52
ENABLE 2
49
Q292
MUTE
Q291
MUTE
Q831,834,881
CENTER AMP
IC831
REAR AMP
IC831
D863
OVER
LOAD DET
Q731
OVER
LOAD DET
1
2
6
4
7
RELAY
CONTROL
IC701
Q733
MUTE
Q732
RELAY
DRIVE
DRIVE
Q701,702
RY701
RY711
RELAY
DRIVE
DRIVE
Q711,712
Q713
MUTE
J781
PHONS
L
R
TM701
R CH
R CH
(FRONT)
(REAR)
SPEAKER
TM702
PL
DA
T
A
PL
CLK
PL
LA
TCH
PL
VOL
Q505
MUTE
Q571,572
MUTE
CONT
Q575
MUTE
Q191
MUTE
IC191
J191
2
DBFB H/L
1
LINE MUTE
100
STK MUTE
50
PL
DA
T
A
49
PL
CLK
42
PL
LA
TCH
41
PL
VOL
6
F RELA
Y
8
PL
RELA
Y
53
CEN MUTE
PL
DA
T
A
PL
CLK
PL
LA
TCH
PL
VOL
RESET
Q501
RESET
IC502
15
RESET
3
1
M U D+5V
54
77
1
6
11
.
18
31
.
41
53
26
29
34
37
17
14
SPEANA0
SPEANA3
SEG1
SEG20
G1
G13
LED1
LED16
KEY0
KEY3
FL601
DISPLAY
DISPLAY CONTROL
IC601
F1
F2
LED
DRIVER
Q601-604
Q608-612
Q608-612
D611-628
D630-640
D630-640
25
LED SEL
8
XO
9
XI
78
VKK
X601
32 L+R
13
FUCTION
KEY
SPEANA
IC603
ROTARY
ENCODER
S652
JOG
4
S601-644
SIRCS
IC402
10 RESET
24 DATA
23 CLOCK
VOL A
19
VOL B
20
SIRCS
33
P U+5V
JOG A
21
JOG B
22
55
IIC DA
T
A
56
IIC CLK
IIC DA
T
A
IIC CLK
IIC DATA
IIC CLK
F1
F2
T991
MAIN +B
REG
AC
IN
MAIN -B
D821
D901-904
Q901,902,915
REG
IC901
1
3
REG
IC902
1
3
REG
Q916,951,952
FAN
FAN
DRIVE
Q703,704
A +7V
TC +7V
TC -7V
CD -UNREG
FAN M -UNREG
POWER
SWITCH
SWITCH
D821
D914
POWER
SWITCH
SWITCH
Q905,906
Q907,908
RDS D+5V
TC D+5V
CD A+5V
AUDIO D+5V
MUTE +5V
D917
CD M+7V
A-7V
P U+5V
CD U+5V
M U+5V
TC EMRG M+5V
POWER
SWITCH
SWITCH
Q911-914
REG
IC904
1
3
REG
IC903
1
3
ST A+10V
PL VCC
TC M+12V
-30V
REG
REG
Q910
46
CD POWER
5
POWER
16
J782
J101
SUPER
WOOFER
CENTER
S651
VOLUME
IN
IIC CLK
IIC DATA
TO/FROM
AUDIO
BLOCK
(Page 32)
TO/FROM
CD
BLOCK
(Page 28)
B
A
HCD-F250AV
— 31 —
— 32 —
6-3. BLOCK DIAGRAM — AUDIO SECTION —
PB EQ AMP
(DECK A)
IC611
PB LEVEL (L)
(DECK A)
REC-L
PB-L
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
CAPSTAN
MOTOR DRIVE
Q336 – 339
1
A
TO/FROM
MAIN
BLOCK
(Page 29)
L-CH
R-CH
R-CH
HRP1
(PLAYBACK)
PB EQ AMP
(DECK B)
IC601
L-CH
R-CH
R-CH
R-CH
R-CH
HRP2 (1/2)
(RECORD/PLAYBACK)
ALC
REC
EQ AMP
AMS
CIRCUIT
DOLBY NR
AMP
CIRCUIT
BIAS
CONTROL
CIRCUIT
DOLBY PASS
R-CH
L.P.F.
BUFFER
Q335
M
M1
(CAPSTAN)
HRP2 (2/2)
(ERASE)
BIAS OSC
T621
B+
(A+7V)
R-CH
3
46
28
43
36
40
35
34
39
26
31
19 15 16 18 20 22 23 24 25
17
99 94 93 92 90 89 88 87
31
33
32
32
+
48
4
2
RV311
PB LEVEL (L)
(DECK B)
RV301
TAPE SPEED
(NORMAL)
RV1002
TAPE SPEED
(HIGH)
RV1001
REC LEVEL (L)
(DECK B)
RV301
REC BIAS (R)
(DECK B)
RV441
REC BIAS (L)
(DECK B)
BIAS OSC
Q621, 622
REC BIAS
SWITCH
Q623
ROTATION
DETECT SENSOR
(DECK A)
IC1001
RV341
BIAS
TRAP
C331, L331
REC/PB SWITCHING
IC602
SYSTEM CONTROLLER
IC501 (2/3)
DECK PROCESS
DECK A/B SELECT, PB/REC EQ AMP,
DOLBY NR AMP, ALC, AMS
IC301
AIN (L)
BIN (L)
MAOUT
PB OUT (L)
EQ OUT
(L)
MSIN
MSOUT
BIAS ON/OFF
70
120
BIAS (N)
BIAS (C)
BIAS (M)
S1004
A 120/70
B NORM/CROM
ALC ON/OFF
PB A/B
NORM/HIGH
NR ON/OFF
RM ON/OFF
REC/PB/PASS
LM ON/OFF
(DECK A 120/70)
98
S1003
S1001
(DECK A PLAY)
S1002
(DECK B PLAY)
(DECK A HALF)
S1008
(DECK B 120/70)
27
REC OUT (L)
ROUT (L)
RIN (L)
ALC (L)
EQ IN (L)
ALC
IN (L)
44
38
97
AMS-IN
26
A-SHUT
ROTATION
DETECT SENSOR
(DECK B)
IC1002
27
B-SHUT
TRIGGER
PLUNGER DRIVE
(DECK A)
Q333, 334
84
A-TRG
TC-MUTE
R/P-PASS
NR-ON/OFF
REC-MUTE
BIAS
EQ-H/N
PB-A/B
ALC-ON/OFF
TC-RELAY
A-PLAY-SW
B-PLAY-SW
A-HALF
28
S1006
(DECK B HALF)
S1009
(DECK B REC)
S1005
(DECK A REC)
B-HALF
SL1
TRIGGER PLUNGER
DECK A
TRIGGER
PLUNGER DRIVE
(DECK B)
Q331, 332
83
B-TRG
82
17
77
CAP-M-H/L
CAPM-CNT1P
CAPM-CNT2P
CAPSTAN
MOTOR DRIVE
Q340 – 343
85
86
CAPM-CNT1M
CAPM-CNT2M
SL2
TRIGGER PLUNGER
DECK B
95
96
• SIGNAL PATH
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
: RECORD
16
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