Sony CFS-B5L MK2 Service Manual ▷ View online
– 15 –
– 16 –
5-4. SCHEMATIC DIAGRAM — TUNER SECTION — • Refer to page 13 for IC Block Diagram.
CFS-B5LMK2
(Page 20)
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
(
no mark : FM
(
) : MW/LW, SW
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM/SW
f
: MW/LW
5-5. PRINTED WIRING BOARDS — MAIN SECTION — • Refer to page 13 for Circuit Boards Location.
CFS-B5LMK2
– 17 –
– 18 –
Note:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
• Semiconductor
Location
Ref. No.
Location
D351
E-1
D352
F-1
D353
F-2
D901
F-9
D902
F-8
D903
F-10
D904
F-9
D911
A-2
IC301
E-3
IC305
E-5
Q151
D-4
Q251
D-4
Q340
F-5
Q341
F-2
Q351
E-1
Q951
F-2
(Page 14)
– 19 –
– 20 –
5-6. SCHEMATIC DIAGRAM — MAIN SECTION —
CFS-B5LMK2
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
•
C
: panel designation.
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
•
U
: B+ Line.
• Total current is measured with no cassette installed.
• Power voltage is dc 9 V and fed with regulated dc power
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
<
no mark : FM
<
> : PB
<< >> : REC
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
E
: PB
a
: REC
(Page 16)
T301
• Waveform
(MODE:REC)
1
35Vp-p
15mS
– 21 –
– 22 –
SECTION 6
EXPLODED VIEWS
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
Ref. No.
Part No.
Description
Remark
6-1. CABINET (FRONT) SECTION
N
N
Ref. No.
Part No.
Description
Remark
• Accessories and packing materials and
hardware (# mark) list are given in
the last of this parts list.
the last of this parts list.
1
X-3375-698-1 CABINET (FRONT) SUB ASSY (B)
2
3-025-531-01 LID, CASSETTE
3
3-025-552-01 WINDOW (CASSETTE)
4
3-025-555-01 SPRING (CASSETTE)
5
3-922-112-31 DAMPER
6
3-917-646-01 LID, BATTERY CASE
! 7
1-769-412-11 CORD, POWER
SP901
1-505-955-11 SPEAKER (10cm) (L-CH)
SP902
1-505-955-11 SPEAKER (10cm) (R-CH)
The components identified by
mark
mark
! or dotted line with mark.
! are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
5
4
1
6
7
#2
#1
#1
#1
SP901
not supplied
#1
#2
#2
#2
#1
SP902
#1
#3
2
3
6-2. CABINET (REAR) SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
The components identified by
mark
mark
! or dotted line with mark.
! are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
51
3-025-530-01 POINTER
52
3-025-529-01 CHASSIS (TUNE)
53
3-025-545-01 SHAFT (TUNE)
54
3-025-560-01 SPRING (TU)
55
3-025-546-01 SHAFT (FUNCTION)
56
3-025-556-01 SPRING, REC
57
3-025-534-01 BUTTON (REC)
58
3-025-537-01 BUTTON (PLAY)
59
3-025-536-01 BUTTON (REW)
60
3-025-535-01 BUTTON (FF)
61
3-025-538-01 BUTTON (STOP)
62
3-025-533-01 BUTTON (PAUSE)
* 63
1-670-175-11 AC BOARD
* 64
1-670-173-21 SECOND BOARD
* 65
A-3321-332-A AUDIO BOARD, COMPLETE
66
3-025-541-01 LEVER (FUNCTION)
* 67
3-025-550-01 CHASSIS (MD)
* 68
1-670-172-21 BATTERY BOARD
69
3-025-557-01 TERMINAL (–), BATTERY
70
3-025-548-01 HANDLE (SIDE)
71
3-025-549-01 HANDLE (C)
72
3-025-539-01 KNOB (VOL)
73
3-025-540-01 KNOB (TONE)
74
3-025-542-01 KNOB (FUNCTION)
75
3-025-544-01 KNOB (FINE)
76
3-029-701-01 SPRING (+–), TERMINAL COIL
77
3-025-543-01 KNOB (TUNE)
78
3-025-528-01 CABINET (REAR)
* 79
A-3321-335-A TUNER BOARD, COMPLETE
80
3-025-547-01 GEAR (VC)
81
3-025-559-01 TERMINAL, ANTENNA
82
3-025-551-01 CAP (FUNCTION)
* 83
1-670-176-11 SUPPORT BOARD
* 84
1-670-174-21 MICROPHONE BOARD
* 85
3-911-281-01 CUSHION, MIC
* 86
1-670-177-11 ISS BOARD
ANT1
1-501-918-21 ANTENNA, TELESCOPIC
MIC301 1-542-118-11 MICROPHONE, ELECTRET CONDENSER (MIC)
! T901
1-431-917-11 TRANSFORMER, POWER
ANT1
T901
#5
#1
#1
#1
#1
#1
#1
#1
MIC301
#7
#6
#1
#1
#1
not supplied
MF-B5MK2-117
#1
#4
#1
#9
#2
64
63
65
66
86
55
56
57
58
59
60
62
61
52
51
53
54
84
85
83
82
67
72
73
70
70
75
74
76
77
78
79
80
81
71
69
68
A
A
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