Page 1
Service
Service
MC-70
A02 - 155
Service
Product Service Group CE Audio
Service Information
Already published Service Informations: A01-165 3139 785 30024
CHANGES DURING PRODUCTION
FRONT CONTROL BOARD
* From production wk204 onwards the following changes
are made to improve brightness & reliability of the Blue
LED.
3601 change to 33R 5% 0,062W 4822 051 30339
3602 change to 33R 5% 0,062W 4822 051 30339
ETF TAPE MODULE
* From production wk209 onwards a new ETF8 SD Tape
Module was introduced replacing the existing ETF6-LE
Tape Module. Due to this change the undermentioned
changes needs to be implemented together:
On the Front Board
7102 is change to 9965 000 11077 TMP88PU74YF.
This is the OTP version of new IC which can be recog-
nized by the "MC50S52881" printed on the body of the IC.
3DTC MODULE
* From production wk205 onwards a new pc board pt. 5 is
introduced due to the addition of a HF detection circuitry
for other set application. Because the existing module
has dedicated circuit diagram for this set, no changes is
required on the circuit. Enclosed is the new pt.5 layout.
REGULATOR BOARD
* From production wk212 onwards a new pc board pt. 4 to
improve MW/LW sensitivity & noise for other application
sharing the pc board. Added on the board are compo-
nents 2417 and 2420.
The silkscreen printing on the pc board is later changed
to pt. 5 to correct item 3433 & 3434 interchange error.
The new pt.5 layout & circuitry is enclosed for reference.
On the Center Unit (Refer to Set Exploded view)
Pos 198 is change to 3139 114 73930 Door Cassette
A new Chapter of the ETF8 Tape Module is enclosed. It
can be recognized by the the printing mark
3139_113_34552_01 on the pc board.
3139 785 300622002 - 04 - 26
Page 2
REGULATOR BOARD
Page 3
REGULATOR CIRCUIT
A
B
C
D
E
F
123456789
+12V_M
3419
3411
470R
t
47u
FOR CDR ONLY
10.35V
3420
2322640
2406
5V_VCD
11.3V
330R
6406
BZX79-C3V9
1K
100u
VCD_GND
3421
7409
BC327-25
6.34V
2407
5R6
11V
100u
1400
1
2
EH-B
For Fan
EH-B
1401
1
2
3
4
5
6
7
8
9
10
11
TO COMBI
TO CDR MODULE
6
5
4
3
2
1
EH-B
1403
3
1
3439
7419
BC547B
GND_M
EH-B
1402
1
2
3
4
5
6
7
8
9
#
9406
2
7420
STP16NE06
1K
3438
10K
3440
5V_VCD
14.5V
GND_M
VCD_GND
5V_VCD
+12V_M
3436
10K
100K
7421
BC547B
+12V_A
LPC
+12V_M
+A
+A/2
+5V6
VCD_ON
T1A
1171
GND_A
5V6_GND
VCD_GND
T2A5 for CDR
*
~
+A
3437
100K
9172
9174
3423
22K
3424
470K
BC547B
VCD_ON
CDR ONLY
VCD_ON
7413
BDW94C
3425
7414
23
1
2K2
5.7V
2411
5V6_GND
3422
~
2412
10K
3426
47u
9404
100K
1u
+5V6
7415
BC547B
LPC
5V
2413
29V
7401
BC547B
10u
*
5V6_GND
27.3V
6407
3427
3428
+A
1K
3405
3403
4.2V
2K2
3404
6400
1N4148
6401
1N4148
GND_A
9405
~
BZX55-B4V7
100R
150R
270R
27.9V
7402
BC557B
14.1V
2409
7403
BDX53BFI
12.4V
2400
2u2
3406
1K
2403
7417
1
IN OUT
GND
L7805
10u
6409
2410
100n
For NON CDR
11.3V
FOR NON-LPS VERSION ONLY
15K
3407
6402
BZX79-C15
0.65V
4u7
2
2404
3
0.7V
1N4148
3409
100n
5.7V
5V6_GND
3K3
2408
1.4V
+5V6
+A
3410
100n
9401
3412
7407
BC547B
10K
7406
BC547B
3430
2420
1K
3413
6404
10K
BC547B
10u
BD438
1K
1N4148
7411
7405
GND_M
1K
3414
9.91V
7408
BC547B
7410
BD438
3431
3432
180R
180R
2417
1n
7412
BC547B
VCD_GND
PROVISION
#
FOR CDR ONLY
*
FOR NON-CDR ONLY
~
+12V_A
2402
GND_A
3415
68R
1N4148
3433
47u
6412
10K
6405
3416
3417
6413
3434
3435
BZX79-B10
10u
2405
120R
120R
BZX79-B3V9
2415
120R
120R
3418
2416
10u
A
B
C
D
E
F
1171 C2
1400 B9
1401 A1
1402 A1
1403 E1
2400 B5
2402 A7
2403 C5
2404 C5
2405 B7
2406 B8
2407 B8
2408 D5
2409 E4
2410 E5
2411 C3
2412 F3
2413 E3
2415 E7
2416 D8
2417 D6
2420 E6
3403 A4
3404 B4
3405 A4
3406 B5
3407 B5
3409 C5
3410 B6
3411 B8
3412 B6
3413 B6
3414 B6
3415 B7
3416 B7
3417 C7
3418 B8
3419 A8
3420 B8
3421 A8
3422 D3
3423 D2
3424 E2
3425 E3
3426 E3
3427 E4
3428 F4
3430 D6
3431 D6
3432 D6
3433 D7
3434 E7
3435 E7
3436 E2
3437 F2
3438 F1
3439 F1
3440 F1
6400 B4
6401 C4
6402 B5
6404 C6
6405 B7
6406 B8
6407 E4
6409 E5
6412 D7
6413 D7
7401 B4
7402 B4
7403 A4
7405 A6
7406 C6
7407 B6
7408 B7
7409 B9
7410 D7
7411 E6
7412 E7
7413 D3
7414 F3
7415 F3
7417 D5
7419 F1
7420 E1
7421 F2
9172 D2
9174 D2
9401 A6
9404 D3
9405 D4
9406 E1
123456789
Page 4
3DTC MAIN BOARD LAYOUTS
Mainboard Componentside view
This assembly drawing shows a summary of all possible versions.
For components used in a specific version see schematic diagram respectively partslist.
3DTC, Mainboard Layout stage .5 2001-10-23
1234567
G
F
E
D
C
B
A
1234567
G
F
E
D
C
B
A
Mainboard Copperside view
This assembly drawing shows a summary of all possible versions.
For components used in a specific version see schematic diagram respectively partslist.
3DTC, Mainboard Layout stage .5 2001-10-23
1800 D1
1801 A4
1802 C4
1803 G5
1804 G2
1805 G3
1806 C7
2701 G4
2706 E2
2818 C5
2830 C2
2839 C3
2843 C2
2845 C4
2847 C3
2851 E2
2858 E3
2860 E4
2863 A6
2864 A7
2866 C6
2868 C5
2886 B5
2891 B6
3779 G4
3862 D2
3873 E1
3887 A5
3888 A5
3899 G1
5800 G5
7802 E2
7803 A6
7815 G3
9801 F6
9802 G5
9804 A2
9805 G7
9806 C3
9807 F5
9808 C7
9809 B7
9821 E1
9822 E1
9823 C1
9824 C1
9825 C1
9826 B3
9827 E1
9828 F1
9829 F1
9830 F2
9831 F2
9832 G3
9833 G2
9834 B1
9836 C1
9837 C1
9838 D3
9839 E7
9840 F6
9841 F6
9842 B4
9843 B3
9844 B2
9845 C3
9847 D3
9848 E3
9849 E3
9850 F4
9851 F3
9852 G4
9854 G5
9855 B4
9856 D2
9857 D2
9858 D3
9859 F4
9860 F4
9862 D6
9863 C7
9864 C7
9865 C7
9866 E7
9869 D7
9870 B7
9871 B7
9872 D7
9873 F5
9874 F6
9875 F6
9876 G6
9877 D7
9878 E7
9879 E7
9880 E7
9882 D5
9883 D5
9884 F6
9885 E7
9886 D7
9887 D7
9888 D2
9889 C5
9890 B4
9891 G7
9892 F7
9893 F7
9894 C4
9895 C5
9896 C1
9897 D6
9898 D6
C800 A1
2700 B3
2703 B3
2704 B2
2705 F2
2707 F3
2710 F3
2711 F2
2712 B3
2713 F3
2810 E4
2811 F1
2812 F4
2813 E4
2814 F1
2815 F1
2816 F4
2817 E5
2819 E4
2820 E4
2821 F2
2822 F4
2828 F2
2829 F3
2831 D5
2832 E2
2833 D5
2834 D1
2836 E2
2842 E4
2844 D3
2846 C2
2848 C3
2849 D3
2850 E3
2852 C4
2853 D3
2854 D3
2855 C2
2856 C3
2859 D3
2861 G7
2862 C3
2865 C3
2867 E5
2869 E5
2878 B5
2879 A4
2880 A5
2881 A5
2882 B5
2885 F6
2887 F6
2888 F5
2889 E6
2890 E5
2892 E5
2893 E7
2894 E5
2895 E5
3700 G2
3701 F2
3702 E6
3703 E6
3713 F3
3715 C6
3716 C6
3717 D6
3718 B6
3719 E5
3720 E5
3722 F2
3723 A6
3724 A6
3725 B6
3726 D6
3727 D6
3728 D5
3729 D6
3730 F2
3731 G3
3733 B7
3735 B7
3736 C6
3737 B5
3738 C5
3740 C5
3741 C5
3742 C5
3743 C4
3744 A5
3745 C5
3746 C5
3747 C5
3748 C5
3750 C5
3751 C5
3752 C4
3753 A6
3754 B6
3755 F6
3756 F6
3757 F6
3758 E5
3759 E5
3760 F6
3761 F5
3762 F6
3763 F5
3764 E6
3765 E5
3766 F3
3768 F3
3770 F3
3771 B3
3772 B2
3773 A4
3774 B3
3775 B3
3776 A3
3777 A3
3778 B3
3780 B1
3781 B3
3782 B3
3783 A7
3784 B2
3785 G2
3786 B1
3787 B3
3788 B2
3789 B2
3790 B3
3791 B3
3793 F3
3794 F2
3795 F2
3796 F3
3797 G2
3805 F4
3806 F4
3807 F1
3808 F4
3809 F1
3810 F4
3811 D2
3812 D2
3813 F4
3814 E5
3816 E5
3817 F1
3818 F4
3820 F2
3821 F4
3829 D2
3830 E2
3831 F2
3833 F4
3835 F2
3836 F1
3840 D6
3841 C4
3844 D5
3845 C5
3846 C1
3847 C6
3848 C6
3849 C6
3850 D6
3851 F1
3852 D6
3853 F2
3854 B6
3855 F2
3856 F2
3857 D6
3858 D6
3859 E2
3860 D6
3861 E2
3863 E4
3864 E3
3865 C6
3866 D4
3867 E3
3868 E3
3869 C3
3870 C4
3871 C2
3872 C4
3874 D3
3875 E3
3876 C3
3877 C3
3878 C4
3879 C2
3880 D3
3881 D3
3882 D3
3883 C3
3884 G7
3885 C3
3886 C4
3889 C3
3890 G6
3891 C3
3892 F7
3893 E3
3897 F3
6801 B7
6802 C5
6804 A2
6805 A2
6806 A2
6807 B1
6808 A1
6809 A1
6810 A1
6811 C2
6812 C1
6813 G3
6814 G3
7800 D4
7801 E2
7804 D3
7806 D2
7811 B7
7812 C5
7813 A2
7814 B2
7816 E5
7817 F2
7818 F2
7819 G2
7820 F3
Page 5
9-1
9-1
CONNECTORS ASSIGNMENTS:
CONNECTOR 1701 INTERCONNECTION TO AF BOARD
1 REC-L Record input left
2 REC-R Record input right
3 GND A AF Ground
4 TAPE-L Playback output left
5 +12V D.C. supply (+12V) for AF electronics
6 TAPE-R Playback output right
7 -CMOS Negative d.c. supply (-9V) for controlling JFET J111
ETF8 TAPE MODULE
TABLE OF CONTENTS
Connector assignment ........................................................ 9-1
Tape Module Wiring ............................................................. 9-2
Tape Mechanism electronics ............................................... 9-2
Tape adjustment / Check Table ........................................... 9-3
HEF4094BT Functional Block & Application Logic Table ... 9-3
ETF8 Board layouts - Components & Chips ....................... 9-4
ETF8 Circuit diagram .......................................................... 9-5
Exploded Views & mechanical parts list ............................. 9-6
Electrical parts list ............................................................... 9-8
CONNECTOR 1703 INTERCONNECTION TO AF BOARD
1 GND M Motor Ground
2 +MOTOR D.C. supply (+12V) for tape deck motor & solenoid
CONNECTOR 1706 INTERCONNECTION TO FRONT BOARD
1 CR_IN Deck sensing Chrome Tape
2 AD1 Deck sensing switches output voltage / Deck EOT
3 +5V DC supply (+5V) for deck status ADC network (ref to microprocessor’s supply)
4 GND _P Control & Oscillator Ground
5 CLK HEF4094BT shift register Clock line
6 DATA HEF4094BT shift register Data line
7 STROBE HEF4094BT shift register Strobe line
CONNECTOR 1710 TAPE HEAD CONNECTIONS
1 GND A
2 ERASE HEAD
3 R/P HD Rch R/P Head right channel positive
4 Common
5 R/P HD Lch
Erase Head ground
Erase Head
Pb Head return ground shield
R/P Head left channel positive
CONNECTOR 1760 DECK CONTROL INTERFACE
1 Vcc 12V Deck / Motor supply
2 PHOTO Photo sensor output (tape movement indication)
3 GND_M Deck / Motor ground
4 MODE Mode switch (head engagement)
5 Sol_supply Solenoid supply
6 CR_IN Chrome tape detection switch
7 REC FWD Record tab protection status switch (forward)
8 REC REW Record tab protection status switch (reverse)
Page 6
9-2
9-2
TAPE DECK WIRING
REC
RVS
CRO
To ETF8 Board
Connector 1760 (8P)
REC
FWD
TAPE MECHANISM ELECTRONICS
Motor
Photo Interrupter
Mode Switch
CrO2 Switch
Rec Switch (FWD)
08FESTVKNA
Pin No.
1. Vcc 12V
2. Photo Out
3. Gnd
4. Mode Switch
5. Solenoid
6. CrO2 Switch
7. Rec Switch (FWD)
8. Rec Switch (RVS)
To ETF8 Board
Connector 1710 (5P)
Non-Autoreverse version
Red
1
Blue
Tape Deck
Motor
Autoreverse version
Red
1
Blue
470R
Rec Switch (RVS)
Solenoid
White
Black
Rec/Pb head
Yellow
Erase head
White
Black
Yellow
To Autoreverse
Rec/Pb head
Page 7
9-3 9-3
TAPE ADJUSTMENT & CHECK TABLE
MOTOR SPEED
WOW & FLUTTER
ADJUST AZIMUTH
PLAYBACK
FREQ. RESPONSE
TEST
CASSETTE
SBC420
3150Hz
SBC420
3150Hz
SBC420
10kHz
SBC420
RECORDER
MODE
PLAY
PLAY
PLAY FWD
PLAY REV ^
PLAY
CHECK RECORD/PLAYBACK FREQUENCY AND DISTORTION
Inject 8.85mV signals
100Hz, 250Hz, 1kHz,
10kHz, 12.5kHz
via
or
3
4
Inject 1kHz 28mV
via
or
3
4
SBC419A
or
SBC420
RECORDED
CASSETTE
SBC419A
or
SBC420
RECORDED
CASSETTE
RECORD
PLAY
RECORD
PLAY
MEASURE
ON
or
1
RIGHT
LEFT
or
1
RIGHT
LEFT
or
1
RIGHT
LEFT
2
2
2
READ ON
frequency
counter
W&F-meter
mV-meter
mV-meter
mV-meter
THD-meter
ADJUST
with
check
check
left hand screw
right hand screw
check
check
check
to
3150Hz +/- 2%
< 0.4 % DIN
max. output level
& left=right
limits see fig. 1 *
limits see fig. 2 *
< 3% *
HEF4094BT FUNCTIONAL BLOCK DIAGRAM
16
DD
V
D
2
CP
3
STR
1
EO
15
VSS
8
AF Control Logic State Table
State of Module
8-STAGE SHIFT
REGISTER
8-BIT STORAGE
REGISTER
3-STATE OUTPUTS
O
O
O
0
2
1
6
54
O
3
7
14
O
CR_SEL
O
0
O
O
4
5
13
12
O
REC
6
11
1
O
’
S
10
O
S
9
O
7
Control lines from HEF4094BT
2
O
BIAS_OFF
CR_BIAS
3
O
4
O
O
5
SOL
6
O
MUTE_OFF
O
MOT
7
SBC419A : 4822 397 30069
SBC420 : 4822 397 30071
level(dB)
8dB
80
250
6dB
figure. 1
4k
^ For Auto-reverse version only
* If high frequencies are not within limits, decrease bias and re-measure.
If distortion is too high, increase bias and re-meaure
level(dB)
100
8dB
250
6dB
figure. 2
4k
8dB
f(Hz)
10k
8dB
f(Hz)
12.5k (AR)
10k (Non-AR)
Stop
Playback (Ferro)
Playback (Chrome)
Record (Ferro)
Record (Chrome)
FWD
REW
Note: 0 = Logic Low
1 = Logic High
X = Not applicable
0
0
1
0
1
0
0
0
0
0
1
1
0
0
1
1
1
0
0
1
1
X
0
1
0
1
X
X
Not in used
Deck Mechanism Timing
0
1
1
0
0
0
0
0
1
1
1
1
1
1
Page 8
COMPONENT LAYOUT CHIP LAYOUT
9-49-4
1
2
This assembly drawing shows a summary of all possible versions. For components used in a specific version see schematic and respecive parts list.
4
3
3
4 1
This assembly drawing shows a summary of all possible versions. For components used in a specific version see schematic and respecive parts list.
2
3139 113 3455 pt 2 ...90140 dd wk204
3139 113 3455 pt 2 ...90140 dd wk204
Page 9
CIRCUIT DIAGRAM
E
F
G
H
A
B
C
D
1701 D14
1703 A1
1706 A1
1710 F1
1760 A14
2621 A3
2622 A3
2623 A2
2625 C5
2701 D2
2702 E3
2703 E13
2704 F12
2709 E7
2710 G7
2711 D9
2712 I8
2713 D9
2714 H8
2715 D8
2716 H8
2717 D5
2718 E5
2719 F4
2720 F4
2721 D7
2722 H7
2723 D7
2724 H7
2725 D10
2727 D3
2728 E3
2729 E8
2730 H8
2731 E9
9-5 9-5
2732 G2
2743 I1
2747 D13
2761 F10
2768 G13
2769 E12
2770 F11
2780 I3
2781 I3
2782 I2
2784 I1
2785 I2
2786 G1
2787 G3
2788 D13
2789 E8
2790 G8
2791 E8
2793 F7
2794 G8
2795 G5
2796 G9
2797 G9
2798 E9
2799 F10
3607 A11
3608 B10
3609 A11
3610 B11
3611 A10
3612 B11
3614 C11
3624 A9
3626 A10
3628 A9
3630 A9
3678 B8
3680 B9
3686 C11
3709 D8
3710 I8
3711 E7
3712 G7
3717 D5
3718 E5
3719 E4
3720 E4
3721 E4
3722 E4
3723 D3
3724 E3
3733 E13
3734 F13
3735 E13
3736 E13
3737 G13
3738 G12
3739 G13
3740 G14
3743 E12
3744 F11
3745 D12
3746 D11
3749 D2
3750 E2
3762 H2
3764 F9
3768 D13
3769 H5
3770 I2
3771 I3
3772 I3
3774 H3
3775 I3
3776 I2
3777 I2
3778 H1
3779 G3
3780 G2
3781 G2
3786 I5
3789 I4
3790 D9
3791 G9
3792 F6
3793 F5
3794 F5
3795 F5
3796 E10
3797 C11
3800 G11
4736 D5
4737 D5
5701 G2
5703 I1
6612 A10
6770 H2
6771 H2
6772 G1
6773 G2
6774 G3
6776 I4
6777 H3
6778 H5
7610 B5
7612 A9
7614 A10
7618 B9
7620 B9
7624 C11
7720 F8
7780 I4
7781 I3
7782 H2
7783 H2
7784 G3
7786 G2
7788 G13
7789 G12
7790 G12
7792 F6
7793 F4
7794 F4
12
EH-B 1703
+MOTOR
GND_M
2
1
A
FE-BT-VK-N
B
1706
STROBE
DATA
CLK
GND_P
+5V
AD1
CR_IN
TO / FROM
FRONT BOARD
7
6
5
4
3
2
1
+MOTOR
11.9V
M
2623
P
+5V
C
Rch
1N4148
1N4148
1u
P
Lch
Common
3781
4M7
6773
6770
6771
11.0V
3770
1K5
3777
150R
ERASE
OSCILLATOR
3749
120R
3750
120R
7786
J111
A
3780
1N4148
1N4148
BC847B
1M
7783
100p
2701
A
0.0V
5701
18.7V
3762
820R
1.6V3.3V
2782
4n7
3776
6K8
D
E
FE-ST-VK-N
REC/PB
1710
GND_A
F
G
H
I
Erase
2784
A
A
1
2
3
Rch
4
5
Lch
2786
100p
+12V
6R8
3778
P
MT17MT2
3
2
1
CLNS-2A833 YEZ
5703
2743
15n
22n
A
A
2732
6772
A
11.6V
BC557B
7782
8
6
5
4
P
1u
-C
2785
34567891011121314
+MOTOR
7612
470p
2702
2u2
A
6777
P
3771
1K2
0.7V
2781
2622
100p
A
PB_Lin
0.0V
BC857B
7784
BZX79-F8V2
P
10n
3775
P
2621
470p
33n
2787
A
3.1V
*
7781
BC817-25
0.3V
4R7
P
1n
STROBE
DATA
CLK
3779
330K
6774
1N4148
3774
3772
P
P
*
3723
18K
2727
2n2
*
3724
18K
2728
2n2
5K6
3721
2K7
3719
33n
2719
BC847B
BC847B
7793
A
BIAS_OFF
18K
BIAS
LEVEL
+12V
6776
1N4148
7780
BC847B
3789
15K
2780
22u
PP
SHIFT REGISTER
P
5K6
3722
3720
33n
2720
7794
3795
A
47K
11.7V
0.0V
1K
2625
100n
2K7
10
9
1
2
3
AD1
DATA
CR_IN
3794
3786
*
*
22K
*
*
*
*
1K
*
Os
STR
D
CP
4737
3717
1K2
2717
15n
4736
3718
1K2
2718
15n
3769
22K
Os
VSS
7610
HEF4094BT
VDD
16
+5V
(NAR)
(AR)
(NAR)
(AR)
2795
6778
1N4148
PMBT 2907
ALC|LC 16
MUTE
MUTE
REC|RI5
0V
0.7V
3.5V
2789
2713
100n
0V
REC|LI 15
REC|RO6
2.7V
33n
3628
2731
2.8V
REC|LO 14
LR
PB|REC|SW7
2.3V
11.9V
100K
1.1V
7618
BC847B
M
3680
47K
3790
22K
REC_Rout
A
A
1n
13NC
REJECTION
LOGIC
PB/REC
8RF
5.4V
2797
A
11.0V
RIPPLE
22u
P
8
7
0.0V
CR_BIAS
O3
11
5.0V
MOT
O7
O5
O6
O4
O0
O1
O2
E0
15
PB_Rin
SOL
13
MUTE_OFF
12
14
CR_SEL
4
REC
5
BIAS_OFF
6
0.0V
0.0V
0.0V
5.0V
0.0V
3678
47K
REC
MUTE_OFF
CR_SEL
2721
2715
2729
0.62V
2791
4.5V
3709
33R
PB_Rout
22n
1n5
3.8V
*
REC EQ
*
+12V
2723
1u
2n2
100u
A
2709
1n
3711
0.56V
100R
3793
47K
7792
BC847B
2793
AN17150A
7720
TAPE PRE-AMP IC
A
PB|LO 17
PB|LNF 19
PB|LEQ 18
PB|LI 20
220p
3792
1u
A
47K
A
3712
100R
2710
1n
PB|RIN1
0.56V
2794
PB|RNF2
0.62V
220p
PB|REQ3
4.5V
2790
PB|RO4
3.8V
1n5
A
2730
PB_Lout
22n
CR_BIAS
REC_Lout
2724
2n2
2722
1u
2716
100u
A
2714
BIAS_OFF
33R
3710
2712
100p 100n
A
A
(0.7V)
0V
ALC 12
ALC
9 GND
2796
3630
N|C|S 11
NOR/CHRO
VCC10
A
2711
0V
LOGIC
47u
+MOTOR
470R
3624
100p
A
7.9V
A
11.8V
(11.0V)
100K
(1.1V)
7620
BC847B
M
2798
+12V
3764
3791
7614
PMBT 2907
3626
REC_Rin
3796
10u
A
180R
PRE_AMP_VCC
27K
1K
2799
4M7
A
sol_supply
6612
2761
100n
1N4003
3611
3608
220u
REC_Lin
(11.8V)
2K2
27K
(0.3~1.5V)
3686
100K
REC
2725
A
3800
22K
220p
+5V
3609
3612
2K2
56K
BC847B
7624
2K2
3607
M
+5V
3610
120K
27K
56K
3614
3797
(0.8~2.1V)
(0.3~1.5V)
-C
33n
REC_Rin
3734
100p
1K
2747
3768
A
10K
11.9V
2788
3735
2703
22n
100p
3733
27K
3736
22K
22K
REC_L
REC_R
27K
A
A
A
MUTING CIRCUIT
+12V
47K
3739
0.8V
7788
BC847B
1u
2768
0.0V
A
A
3746
1K2
3744
56K
2770
A
TAPE_R
BC847B
3745
7790
1K2
MUTE_OFF
TAPE_L
TAPE_R
+12V
REC_Lin
56K
2n2
3743
2769
2n2
A
A
TAPE_L
BC847B
0.0V
0.6V
7789
3738
2704
A
A
0.0V
0.6V
3737
A
1K
A
** - Provision Part
DC Voltages measured with Fe Recording.
xxV - Voltages during Solenoid On.
* - Variant Parts between AR and NAR versions : please refer to table below;
Item Autoreverse Non-Autoreverse
2717 15n Open
2718 15n Open
3717 1K2 Jumper (4737)
3718 1K2 Jumper (4736)
3723 18K 22K
3724 18K 22K
3769 22K 18K
3772 12K 15K
-9.0V
MUTE_OFF
3740
47K
2
1
A
4
TO / FROM
MECHANISM
FE-ST-VK-N
1
2
3
4
5
6
7
8
TO / FROM
AF BOARD
FE-BT-VK-N
3
1760
1701
Vcc12V
PHOTO
GND_M
MODE
sol_supply
CR_IN
REC_FWD
REC_RVS
7
-CMOS
TAPE_R
6
+12V
5
TAPE_L
4
GND_A
3
REC_R
2
1
REC_L
I
1234567891011121314
Page 10
9-6
AUTOREVERSE (AR) TAPE MECHANISM
MECHANICAL PARTS LIST - AUTOREVERSE TAPE MECHANISM
1 9965 000 10041 Rec/Pb Head assembly
7 9965 000 10042 Cap Pinch R
8 9965 000 10043 Cap Pinch L
9 9965 000 10044 Roller Pinch
32 9965 000 10045 Solenoid assembly
34 9965 000 10046 Motor Assembly
36 9965 000 07441 Belt-SR
37 9965 000 07442 Belt-FR
39 9965 000 10047 Flex Socket 5pin Hort.
40-2 9965 000 10048 Flex Socket 8pin Hort.
40-3 9965 000 10049 Mode Switch
40-4 4822 116 83883 470R 5% 0,5W
40-5 9965 000 10050 Spacer
40-6 9965 000 10051 Photo Interrupter
40-7 9965 000 07443 Box Switch
9-6
40-8 9965 000 10052 Spring Sw
61 9965 000 10053 Spring
62 9965 000 10054 Spring
Note: Only the parts mentioned in this list are normal service
spare parts.
Page 11
9-7
NON-AUTOREVERSE (NAR) TAPE MECHANISM
MECHANICAL PARTS LIST - NON-AUTOREVERSE TAPE MECHANISM
1 9965 000 12110 Play Head
2 9965 000 02600 Erase Head
7 9965 000 10042 Cap Pinch Roller
9 9965 000 10044 Roller Pinch
32 9965 000 07439 Solenoid Assy
34 9965 000 10046 Assembly Motor
36 9965 000 12114 Belt SF
37 9965 000 07442 Belt FR
39 9965 000 12115 Flex Socket 5pin Hort.
40-2 4822 265 11535 Flex Socket 8pin Hort.
40-3 9965 000 10049 Mode Switch
40-4 4822 116 83883 470R 5% 0,5W
40-5 9965 000 12116 Spacer
40-6 9965 000 10051 Photo Interrupter
40-7 9965 000 07443 Box Switch
9-7
40-8 9965 000 10052 Spring Sw
61 9965 000 10053 Spring
62 9965 000 10054 Spring
Note: Only the parts mentioned in this list are normal service
spare parts.
Page 12
9-8
9-8
TAPE MODULE EXPLODED VIEW
MECHANICAL PARTS LIST - TAPE MODULE
1 3139 118 78740 AR Tape Mech. CRL4438
1 3139 118 79220 Non-AR Tape Mech. CFL4217
5 3139 110 35580 Flex Cable 5pin 40mm AD
6 3139 110 35590 Flex Cable 8pin 48mm AD
Note: Only the parts mentioned in this list are normal service
spare parts.
M2 x 16
ETF8 SD Exploded view ....78730 dd wk204
ELECTRICAL PARTS LIST - ETF8 BOARD
MISCELLANEOUS
1701 4822 267 10953 Flex Socket 7pin Vert.
1706 4822 267 10953 Flex Socket 7pin Vert.
1710 4822 267 10958 Flex Socket 5pin Hort.
1760 4822 265 11535 Flex Socket 8pin Hort.
CAPACITORS
2621 5322 126 11578 1nF 10% 50V
2622 4822 126 13881 470pF 5% 50V
2623 4822 126 13881 470pF 5% 50V
2625 4822 126 14305 100nF 10% 16V
2701 4822 122 31765 100pF 2% 63V
2702 4822 122 31765 100pF 2% 63V
2703 4822 122 31765 100pF 2% 63V
2704 4822 122 31765 100pF 2% 63V
2709 5322 126 11578 1nF 10% 50V
2710 5322 126 11578 1nF 10% 50V
2711 4822 122 31765 100pF 2% 63V
2712 4822 122 31765 100pF 2% 63V
2713 5322 121 42386 100nF 5% 63V
2714 5322 121 42386 100nF 5% 63V
2715 4822 124 41584 100uF 20% 10V
2716 4822 124 41584 100uF 20% 10V
2717 3198 017 31530 15nF 50V AR
2718 3198 017 31530 15nF 50V AR
2721 3198 017 41050 1uF 10V
2722 3198 017 41050 1uF 10V
2723 4822 126 14238 2,2nF 50V
2724 4822 126 14238 2,2nF 50V
2725 4822 126 13883 220pF 5% 50V
2727 4822 126 14238 2,2nF 50V
2728 4822 126 14238 2,2nF 50V
2729 4822 126 14494 22nF 10% 25V
2730 4822 126 14494 22nF 10% 25V
2731 5322 126 11578 1nF 10% 50V
2732 3198 017 41050 1uF 10V
2743 4822 126 14494 22nF 10% 25V
2747 4822 126 14549 33nF 16V
2761 4822 124 40196 220uF 20% 16V
2768 4822 124 40756 1uF 20% 100V
2769 4822 126 14238 2,2nF 50V
2770 4822 126 14238 2,2nF 50V
2780 4822 124 81151 22uF 50V
2781 5322 126 11583 10nF 10% 50V
2782 4822 126 13193 4,7nF 10% 63V
2784 4822 121 51305 15nF 10% 50V
2785 4822 124 21913 1uF 20% 63V
2786 4822 122 31765 100pF 2% 63V
2787 4822 126 14549 33nF 16V
2788 4822 126 14494 22nF 10% 25V
2789 4822 126 14549 33nF 16V
2790 4822 126 14247 1,5nF 50V
2791 4822 126 14247 1,5nF 50V
2793 4822 126 13883 220pF 5% 50V
2794 4822 126 13883 220pF 5% 50V
2796 4822 124 40433 47uF 20% 25V
2797 4822 124 81151 22uF 50V
2798 4822 124 21732 10uF 20% 25V
2799 4822 126 14305 100nF 10% 16V
RESISTORS
3607 4822 051 30222 2k2 5% 0,062W
3608 4822 051 30273 27k 5% 0,062W
3609 4822 051 30222 2k2 5% 0,062W
3610 4822 051 20124 120k 5% 0,1W
3611 4822 051 30222 2k2 5% 0,062W
3612 4822 051 30563 56k 5% 0,062W
3614 4822 051 30273 27k 5% 0,062W
3624 4822 117 13632 100k 1% 0,062W
3626 4822 051 30102 1k 5% 0,062W
3628 4822 117 13632 100k 1% 0,062W
3630 4822 051 30471 470R 5% 0,062W
3678 4822 117 12925 47k 1% 0,063W
3680 4822 117 12925 47k 1% 0,063W
3686 4822 117 13632 100k 1% 0,062W
3709 4822 051 30339 33R 5% 0,062W
3710 4822 051 30339 33R 5% 0,062W
3711 4822 051 30101 100R 5% 0,062W
3712 4822 051 30101 100R 5% 0,062W
3717 4822 117 11817 1k2 1% 1/16W AR
3718 4822 117 11817 1k2 1% 1/16W AR
3723 4822 051 30183 18k 5% 0,062W AR
3723 4822 051 30223 22k 5% 0,062W Non-AR
3724 4822 051 30183 18k 5% 0,062W AR
3724 4822 051 30223 22k 5% 0,062W Non-AR
3733 4822 051 30273 27k 5% 0,062W
3734 4822 051 30273 27k 5% 0,062W
3735 4822 051 30223 22k 5% 0,062W
3736 4822 051 30223 22k 5% 0,062W
3737 4822 051 30102 1k 5% 0,062W
3738 4822 051 30102 1k 5% 0,062W
3739 4822 117 12925 47k 1% 0,063W
3740 4822 117 12925 47k 1% 0,063W
3743 4822 051 30563 56k 5% 0,062W
3744 4822 051 30563 56k 5% 0,062W
3745 4822 117 11817 1k2 1% 1/16W
3746 4822 117 11817 1k2 1% 1/16W
3749 4822 051 30121 120R 5% 0,062W
3750 4822 051 30121 120R 5% 0,062W
3762 4822 117 12968 820R 5% 0,62W
3764 4822 051 30181 180R 5% 0,062W
3768 4822 051 30103 10k 5% 0,062W
3769 4822 051 30223 22k 5% 0,062W AR
3769 4822 051 30183 18k 5% 0,062W Non-AR
3770 4822 051 30152 1k5 5% 0,062W
Page 13
ELECTRICAL PARTS LIST - ETF8 BOARD
RESISTORS
3771 4822 117 11817 1k2 1% 1/16W
3772 4822 051 30153 15k 5% 0,062W AR
3772 4822 051 30123 12k 5% 0,062W Non-AR
3774 4822 051 30183 18k 5% 0,062W
3775 4822 117 13608 4,7R 5% 0,063W
3776 4822 051 30682 6k8 5% 0,062W
3777 4822 051 30151 150R 5% 0,062W
3778 4822 052 10688 6R8 5% 0,33W
3779 4822 051 30334 330k 5% 0,062W
3780 4822 051 30105 1M 5% 0,062W
3781 4822 051 30475 4M7 5% 0,062W
3786 4822 051 30223 22k 5% 0,062W
3789 4822 117 12925 47k 1% 0,063W
3790 4822 051 30223 22k 5% 0,062W
3791 4822 051 30273 27k 5% 0,062W
3796 4822 051 30475 4M7 5% 0,062W
3797 4822 051 30563 56k 5% 0,062W
3800 4822 051 30223 22k 5% 0,062W
4701 4822 051 30008 0R Jumper 0603
4702 4822 051 30008 0R Jumper 0603
4705 4822 051 30008 0R Jumper 0603
4707 4822 051 30008 0R Jumper 0603
4708 4822 051 30008 0R Jumper 0603
4709 4822 051 30008 0R Jumper 0603
4710 4822 051 30008 0R Jumper 0603
4711 4822 051 30008 0R Jumper 0603
4712 4822 051 30008 0R Jumper 0603
4718 4822 051 30008 0R Jumper 0603
4719 4822 051 30008 0R Jumper 0603
4720 4822 051 30008 0R Jumper 0603
4721 4822 051 30008 0R Jumper 0603
4723 4822 051 30008 0R Jumper 0603
4725 4822 051 30008 0R Jumper 0603
4726 4822 051 30008 0R Jumper 0603
4727 4822 051 30008 0R Jumper 0603
4729 4822 051 30008 0R Jumper 0603
4730 4822 051 30008 0R Jumper 0603
4731 4822 051 30008 0R Jumper 0603
4732 4822 051 30008 0R Jumper 0603
4733 4822 051 30008 0R Jumper 0603
4734 4822 051 30008 0R Jumper 0603
4735 4822 051 30008 0R Jumper 0603
4736 4822 051 30008 0R Jumper 0603 Non-AR
4737 4822 051 30008 0R Jumper 0603 Non-AR
4738 4822 051 30008 0R Jumper 0603
4739 4822 051 30008 0R Jumper 0603
4741 4822 051 30008 0R Jumper 0603
4746 4822 051 30008 0R Jumper 0603
4747 4822 051 30008 0R Jumper 0603
9-9
5703 4822 156 20946 Osc Coil 100kHz
DIODES
6612 4822 130 31878 1N4003G
6770 4822 130 30621 1N4148
6771 4822 130 30621 1N4148
6772 4822 130 30621 1N4148
6773 4822 130 30621 1N4148
6774 4822 130 30621 1N4148
6776 4822 130 30621 1N4148
6777 3198 010 58280 BZX79-B8V2
6778 4822 130 30621 1N4148
TRANSISTORS & INTEGRATED CIRCUIT
7610 5322 209 11306 HEF4094BT
7612 4822 130 11201 PMBT2907
7614 4822 130 11201 PMBT2907
7618 4822 130 60511 BC847B
7620 4822 130 60511 BC847B
7624 4822 130 60511 BC847B
7720 9322 167 09668 AN17150ATA
7780 4822 130 60511 BC847B
7781 4822 130 42804 BC817-25
7782 4822 130 44568 BC557B
7783 4822 130 60511 BC847B
7784 4822 130 60373 BC857B
7786 4822 130 63494 J111
7788 4822 130 60511 BC847B
7789 4822 130 60511 BC847B
7790 4822 130 60511 BC847B
Note: Only the parts mentioned in this list are normal service
spare parts.
COILS & FILTERS
5701 4822 157 62552 Coil 2,2uH 5%
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