Nakamichi BX-100 User manual

Nakamichi
Service
Manual
Nakamichi
BX-100
BX-100E
2 Head Cassette Deck

CONTENTS
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Ze. “Ly Tape Guide Height Check for Record/Playback Head and Erase Head .............02 0.000%
2: 2. Head‘ Base Stroke Check: .0..-24-5-0 ashes Nw wee RE Se ee EA PR ee
2. 3. Record/Playback Azimuth Alignment and Height Check ....... 0... cece eee eect eeene
2. 4. Pressure Adjustment of Pressure Roller... 0... 0. cc ee ee ee te eee
2. 5. Tape. Travellirig:‘CReeh. 5.6 e.0 is sce Soe 8 ra eae So eee Meee Sas Sue aeh HE We) eG OIG A ee ie anes
2. 6. Eject Damper.Adjustment: <0. 0c eesiscee ie se oe a eee oboe Ue Bie HE ert Sa he hee ee ee
2. 7: Reel Motor Speed Adjustment in Play Mode ........ 0... cc cece eee ee te eee ee ene nae
2. 8. Tape’ Speed Adjustment: éiiiic 5 alla ics BSG) alg ee We we EE Rie Bede Wee B Soe eS ee ea ee ees
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4, Electrical Adjustments and Measurements ........... 52. - cece eee eee ee ee eee ee eee ee een eens
4. 1. Adjustment and Measurement Instructions ...... 20... 0. cece eee ee eee eee ee ee eee
4, 2. Playback Frequency Response Adjustment ........ 0.0: ce eee ee eee ee eee eet ene
4. 3. Dolby NR Circuit Check 0.0... cc ct ce re ee nw ee eee ence ene n eens
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6. Mounting Diagrams and Parts List ........ 0... cc cece eee ee ee ee eee eee ee eee een eee ene ee
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6. 5. Volume: P.C.B.. Ass? yi 2.5.38.6 Bee Seen Eo Acdo wR case ae ede Seen e evened Roe ees ane SOM, Bee alee ed
6. 6. Dolby NR:P.C:.B: Ass’¥) eis goer eek eas dhe aces te eee Bae le le eae aes Rake eee ete GIG eel
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6. 8. Indicator-P:C.B. ASS’Y cc bees ae ew EN hw Se ee He es Eta i Se ee ae oP alee SMe ee
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10. Timing Chart and Eq. Amp. Frequency Response ....... 0.0... cee eee eee ee eee te eee eee
11, Specifications .............06-- Sig et GN a tas Sie Aa dk Rey Sao WAG Ma, See LaES Se ee eRe Taro eee lo MACE: Genres tak td Sass
1. GENERAL
1.1, Voltage Selector
Voltage selector is installed on the rear panel for Other version of the Nakamichi BX-100.
This voltage selector can select either 120 V or 220-240 V at customer’s disposal.
1.2, Packing Materials and Owner’s Manual
Part No, Description Q
OFO3736A Carton Box BX-100 (Silver)
OFO3750A Carton Box BX-100E (Silver)
OF03737A Carton Box BX-100 (Black)
OF0O3751A Carton Box BX-100E (Black)
OF03674B Packing
0D04311A Owner’s Manual (BX-100.(U.S.A., Canada & Australia) & BX-100E (UK))
0D04317A Owner’s Manual (BX-100 (Others) & BX-100E (220V Class 2))
¢
<
BRN HH ee
1.3. Serial Number
The BX-100 has two versions, Silver and Black.
In the service manual, serial numbers of these versions are identified as follows:
Silver version: A318xxxxx
Black version: A319xxxxx
However, the actual serial number on the serial number plate of the BX-100 is indicated as A318.9xxxxx.
The serial number begins with A318.901001.

2. MECHANICAL ADJUSTMENTS
2.1. Tape Guide Height Check for Record/Playback Head and
Erase Head
With use of an M-300 produced by Information Terminals, tape
guide height check for the Record/Playback and Erase Heads shall
be made, wherein a small block shall be pushed straight down to
the base while in use of the M-300, Refer to Fig. 2.1.
(1) Record/Playback Head Tape Guide Height
(a) Load the base of the M-300 carefully, then set the cassette
deck in Play mode.
(b) Place the small block of the M-300 on the base.
(c) Slide the small block against the tape guide of the Record/
Playback Head, and check to insure that the block is ac-
cepted by the tape guide.
(d) If not, loosen the screw and insert a shim (either 30 um
(0C80048A), 60 um (0C80038A), or 100 um (0C80039A))
to raise the Record/Playback Head, then tighten and apply a
quantity of lock tight paint to the screw.
(2) Erase Head Tape Guide Height
(a) Load the base of the M-300 carefully, then set the cassette
deck in Play mode.
(b) Place the small block of the M-300 on the base.
(c) Slide the small block against the tape guide of the Erase
Head, and check whether the block is accepted by the tape
guide,
2.2, Head Base Stroke Check
Refer to Fig. 2.2.
(1) Load the base of the M-300 carefully, then push the base
toward the Record/Playback Head to eliminate the clearance
between the reference pin and the base.
(2) Setthe cassette deck in Play mode,
(3) Place the small block of the M-300 on the base,
(4) Contact the small block with the Record/Playback Head sur
face and the Erase Head surface, and check whether the end
of the small block is located within the specified tolerance
as shown in the figure.
2.3. Record/Playback Azimuth- Alignment and Height Check
Refer to Fig. 2.1.
(1) Connect a VTVM to the Output Jacks.
(2) Load a 15 kHz Azimuth Tape (DA09004B), then set the
cassette deck in Play mode.
(3)
Tum
the
Azimuth
Alignment
Screw
until
the
outputs
of
both
channels
become
maximum.
(4) Load a1 kHz Track Alignment Tape (DA09007B), then set
the cassette deck in Play mode.
(5) Check to insure that the readings of both channels on the
VTVM are below —25 dB.
If not, replacement of the Record/Playback Head will be
required,
(6) Apply a quantity of lock tight paint to the Azimuth Align-
ment Screw,
2.4, Pressure Adjustment of Pressure Roller
Refer to Fig. 2.3.
(1) In Play mode, measure the torque of the Pressure Roller and
check whether the torque is in a range of 320 +50 g-cm.
(2)
If
torque
is
out
of
the
range,
correct
it
by
changing
the
instal-
lation
point
of
the
Pressure
Roller
Spring.
2.5. Tape Travelling Check
Load the Tape Travelling Cassette (DA09027B), then set the
cassette deck in Play mode and check the following:
(1)
After
more
than
2
seconds,
the
fluctuation
of
the
tape
trav-
elling
on
the
Record/Playback
Head
is
small.
(2) Tape is in contact with the head sufficiently.
(3)
Tape
waving
is
smali
on
the
heads
and
pressure
roller.
2.6. Eject Damper Adjustment
Refer to Fig. 2.4. Load a cassette tape, and with opening the
Cassette
Case
by
pressing
the
Eject
button
and
closing
it
by
hand,
adjust the speed of damper movement by the Adjustment Screw.
cCW: Damper moves fast.
CW: Damper moves slowly.
Fig. 2.3
Decrease
Increase
Damper Adjustment
Screw

2.7. Reel Motor Speed Adjustment in Play Mode
(1) To warm-up the cassette deck, load a C-60 cassette tape and
set the cassette deck in Play mode,
(2) After more than four minutes, load a torque meter TW-211
(made by Sony) and set the cassette deck in Play mode.
(3)
Adjust
VR601
on
the
Main
P.C.B.
Ass’y
to
obtain
exactly
50
g-cm
on
the
torque
meter.
2.8. Tape Speed Adjustment
Refer to Fig. 2.5.
(1) Connect a frequency counter to the Output Jacks.
(2) Load a 3 kHz Speed and Wow/Flutter Tape (DA09006C) and
play it back.
(3)
Adjust
the
Tape
Speed
Adjustment
Volume
incorporated
in
the
Capstan
Motor
to
obtain
3,000
Hz
on
the
frequency
counter,
CCW: Motor drives slowly.
Cw: Motor drives fast.
2.9. Lubrication
The tape transport is of a lubrication-free type mechanism. When
the following parts are replaced, apply the specified lubricant.
(1) Molykote (R) Grease (X5-6020)
Cam Motor Pulley
Thrust portion on the Capstan Shaft
(2) FLOIL GB-TS-1
Washer between Reel Hub Ass’y and Back Tension Spring
(3) Diamond Oil (EP56)
Reel Hub Shaft
(4) Anderol 456
Capstan Shaft
Note: We suggest that you use the above specified lubricant or
equivalent type.
The company dealing in the above lubricant is as follows:
(a) Molykote (R) Grease (X5-6020)
Dowcorning Co., Ltd., 1-15-1 Nishishinbashi, Minato-
ku, Tokyo, Japan
(b) FLOIL GB-TS-1
Kanto Chemicals Co., Ltd., 2-7 Kanda Sakuma-cho,
Chiy oda-ku, Tokyo, Japan
(c) Diamond Oil (EP-56)
Mitsubishi Of] Co., Ltd., 1-2-4 Toranomon, Minato-ku,
Tokyo, Japan
(d) Anderol 456
Toyo Kokusai Oil Co., Ltd,, 3-3-5 Hatchobori, Chuo-
ku, Tokyo, Japan
Decrease
NH
Increase
Copstan Motor
Fig. 2.5

3.
PARTS
LOCATION
FOR
ELECTRICAL
ADJUSTMENT
MPX Filter
L104
L204
TP101
Playbock
Level
©
VREOI
Reel Motor Speed
(Play) vR108 GL VRIO1 vR201
ia Level
vR208 @t
Bios Trap 1P102@
Rec.Cal (Record)
al
1P202©
Bit)
a
om
rrmro(@) orezo3
Peaking
1304
@ Bios Osc. Frequency
© |
Bias Cut
©
VRIOS VRIO6 yRI07
(2) ios
To
VR205 VR206 VR207
Tape Switch P.C.B.
Fig. 3

4. ELECTRICAL ADJUSTMENTS AND MEASUREMENTS
Note:
Electrical
adjustment
should
be
performed
after
mechanical
adjustment
is
completed.
4.1.
Adjustment
and
Measurement
Instructions
Tape Speed
Adjustment
Meter Level
Calibration
MPX Filter
Adjustment
Playback
Level
Calibration
Playback
Frequency
Response
Adjustment
Oscillation
Frequency
Adjustment
SIGNAL OUTPUT
SOURCE CONNECTION
3 kHz Speed
and
Wow/Fliutter
Tape
(DA09006C)
400 Hz to
Input Jacks
400 Hz and
19 kHz +100
Hz to
Input Jacks
Azimuth Tape
(DA09004B)
400 Hz Level
Tape
(DA09005B)
400 Hz Level
Tape
(DA09005B)
10 kHz PB
Frequency
Response Tape
(DA0900 3B)
15 kHz PB
Frequency
Response Tape
(DA09002B)
20 kHz PB
Frequency
Response Tape
(DA09001B)
(—20 dB) to
Frequency
Counter to
Output Jacks
VTVM to
TP101, TP201
on Main P.C.B.
VTVM to
Output Jacks
VTVM to
Output Jacks
VTVM to
TP101, TP201
on Main P.C.B.
VTVM to
Output Jacks
Frequency
Counter to
VTVM across
the additional
0.1 2 resistor
VTVM to
TP102, TP202
on Main P.C.B.
VTVM to
TP103, TP203
on Main P.C.B.
Playback
Eq. SW — 70 us
Record, Pause
Record, Pause
Playback
Eq. SW— 70 us
Dolby NR SW — OFF
Same as above
Record, Pause
Tape SW — ZX
Eq. SW — 70 us
Dolby NR SW — OFF
Same as above
ADJUST-
MENT
Tape Speed
Adjustment
Volume
Main P.C.B.
VR108,VR208
Main P.C.B.
L104,L204
Record/Playback
Head Azimuth
Alignment
Screw
Main P.C.B.
VR101,VR201
Main P.C.B.
R110,R210
R195.R295
R318,R350
Main P.C.B.
L102,L202
Main P.C.B.
L103,L203
REMARKS
Adjust the volume incorporated in the capstan
motor to obtain 3 kHz +0.5% on the frequency
counter.
1. Feed in 400 Hz, then adjust the Input Level
control to obtain 90 mV —0.8 dB on the
VTVM.
. Adjust VR108 (VR208) so that the 0 dB
segment of the level meter starts illuminat-
ing.
. Adjust the Input Level control to obtain
90 mV on the VTVM, then decrease the
generator output level by 20 dB.
. Check to insure that the segment for —-20
dB illuminates,
. Feed in 400 Hz and adjust the Input Level
control to obtain 0 dB (500 mV) on the
VTVM.
. Feed in 19 kHz, then adjust L104 (L204) to
obtain minimum reading on the VTVM
(minimum reading will be less than --30
dB).
Adjust the Record/Playback Head Azimuth
Alignment Screw to obtain maximum readings
of both channels on the VTVM.
Adjust VR101 (VR201) to obtain 90 mV on
the VTVM.
1. Load a 400 Hz level tape and play it back.
2. Load 10 kHz, 15 kHz and 20 kHz PB fre-
quency response tapes and adjust the record/
playback head azimuth to obtain maximum
levels on the VT VM with each tape.
. Read the maximum levels with each tape
and check to insure that the levels against
the 400 Hz level tape are within the follow-
ing ranges.
If not, short R110 (R210) or R195 (R295)
to obtain satisfactory results,
10 kHz (—20 dB) —2 dB to +2 dB
15 kHz (—20 dB) 2 dB to +3 dB
20 kHz (—20 dB) —2 dB to +4 dB
Refer to the “Playback Frequency Response
Adjustment” in item 4.2 for the detailed
description.
. Conduct step 4 ‘“‘Record/Playback Head
Azimuth Alignment”.
. Adjust T301 to obtain 105 kHz on the fre-
quency counter,
. Connect an additional 0.1 2 resistor in
series to the Erase Head, then connect a
VTVM across it.
. Check the erase current by the VTVM.
Erase current will be in a range of 145 mA
to 185 mA (typically approx. 165 mA).
If erase current is not sufficient, increase
it by shorting R318 or R350.
. After completion of the erase current ad-
justment, re-check the bias oscillation fre-
quency,
. Remove the additional 0.1 2 resistor.
. Short both Bias Stop test pins with a clip
to stop the bias oscillation.
. Adjust L102 (L202) to obtain peak read-
ing at 21 kHz on the VTVM.
. Remove the clip from the test pins,
Adjust L103 (L203) to obtain maximum read-
ing on the VTVM.

SIGNAL OUTPUT ADJUST-
Ee SOURCE CONNECTION | move | MENT REMARKS
Adjustment should be made in the order of ZX,
SX and EX,
. Set the Dolby NR switch to OFF,
. Connect a VTVM to output Jacks,
. Set the BX-100 in Record/Pause mode.
. Feed in 400 Hz, then adjust the Input Level
control to obtain 500 mV (0 dB) on the
VTVM.
. Load a reference ZX tape (DA09037A),
reference SX tape (DA09025A) and refer-
ence EXII tape (DAO9066A).
. Adjust Record Cal. VR102 (VR202) for
ZX, VR103 (VR203) for SX and VR104
(VR204) for EXII to center positions,
. Connect the VTVM to TP102 (TP202) on
the Main P.C.B. Ass’y. Adjust Bias VR105
(VR205) for ZX, VR106 (VR206) for SX
Main P.C.B. and VR107 (VR207) for EXII to obtain the
(Level) following bias current in Record/Pause
ZX: mode (the VTVM is connected across a 10-
VR102,VR202 ohm resistor).
SX: ZX: approx. 1 mA
VTVM to Record and Playback | Vp103.VR203 SX: approx, 0.5 mA
TP102, TP202 EX: EXII: approx. 0.3 mA
on Main P.C.B. z VR104.VR204 . Connect the VTVM to the Output Jacks,
and ‘ . Feed in 400 Hz (—20 dB) and 17 kHz (—20
VTVM
and
(Bias)
aB),
then
record,
rewind
and
play
them
Distortion Meter | Dolby NR SW —OFF/| 7y, back.
to Output Jacks ON | VR105,VR205 Adjust Bias VR105 (VR205) for ZX,
SX: VR106 (VR206) for SX and VR107
VR106,VR206 (VR207) tor EXII to obtain the same play-
EX: hae devel at cael ae ae aB) and 17 kHz
(— B) on the VT %
VEIOLYR20e . Feed in 400 Hz (0 dB), then record, rewind
and play it back.
Adjust Record Cal. VR102 (VR202) for
ZX, VR103 (VR203) for SX and VR104
(VR204) for EXII to obtain 0 dB on the
VTVM.
. Repeat above 9 and 10 two or three times
to obtain optimum performance.
. Set the Dolby NR switch to ON.
. Feed in 400 Hz (—20 dB), 10 kHz (—20 dB)
and 17 kHz (—20 dB), then record, rewind
and play them back.
Check to insure that the playback levels are
within +2 dB against the levels in Dolby NR
OFF.
Check to insure whether the total harmonic
distortion is less than 1.0% for ZX and EXII
tapes and 1.2% for SX tape.
. If above is not sufficient, repeat 9 to 14 till
satisfactory results are obtained.
. Set the BX-100 in Record/Pause mode.
. Feed in 400 Hz, then set the Input Level
control to obtain 0 dB (500 mV) on the
VTVM.
. Decrease the generator output control by 20
dB.
i — an
400 Hz (0 dB) Record and Playback ’ Read awed sad uae ita Coad Anes
Overall and 20 Hz to Tape SW — ZX/SX/EX ; check to insure whether the output levels
Frequency 17 kHz VTVM to Eq. SW — 70 us Main P.C.B. are within —20 dB +4 dB.
Response (20 dB) to Output Jacks (ZX/SX) L102,L202 . If above is not sufficient, adjust L102
Adjustment | Tout Jacks 120 us (EX) (L202) to obtain approx. —20 dB on the
Dolby NR SW — OFF VTVM, then conduct step 10 “Record Level
Calibration and Recording Bias Current
Adjustment”’,
. If above is not sufficient, precise re-adjust-
ment of step 6 ‘‘Playback Frequency Re-
sponse’, replacement of Record/Playback
Head or check on item 2.5 “Tape Travelling
Check”? will be required.
. ered the tape with bulk eraser. "
. Adjust the Input Level control to obtain
1kHz
Band
Pass
|
Record
and
Day
back
0
dB
on
the
VTVM,
and
record
the
signals
Filter and VTVM Eq. SW — 70 us on the reference ZX tape (DAO9037A).
to
Output
Jacks
Doiby
NR
SW
—
OFF
.
Turn
the
cassette
tape
the
other
way
round
and
play
it
back.
. Measure the difference between 2 and 3.
. Erase the tape with bulk eraser.
Channel . Adjust the Input Level control to obtain
Separation |1kHz to O dB on the VTVM, and set the Balance
Measure- Input Jacks control to the extreme left (right).
ment
:
.
Record,
rewind
and
play
it
back,
then
mea-
sure the
R ch
(L
ch) level.
1 kHz to
Input Jacks
Same as above Same as above

SIGNAL
OUTPUT
ADJUST-
Erase the tape with bulk eraser,
2 Adjust the Input Level control to obtain
O dB on the VTVM, and record the signals
on the reference ZX tape (DA09037A).
3. Rewind the tape, set the Input Level control
to minimum, and then record again.
4. Rewind the tape, play it back, and then
measure the difference between 2 and 3.
Set the Dolby NR switch to ON,
Feed in 400 Hz, then record, rewind and
play it back.
Adjust the Input Level control to obtain 3%
Record and Playback
Tape SW — ZX
Eq. SW — 70 us
Dolby NR SW — OFF
100 Hz Band
Pass Filter and
VTVM to
Output Jacks
100 Hz to
Input Jacks
IHF-A
Curve,
Record
and
Playback
sop eo NP
Filter,
VTVM
total
harmonic
distortion
in
Playback
mode.
tapout
gaa
and
Distortion
aed
lire
Set
the
Input
Level
contro!
to
minimum
Meter
to
:
then
record
again.
Output
Jacks
Dolby
NR
SW
—
ON
.
After
rewound,
play
back
and
check
the
output level difference between 3 and 4.
Note: The filter of IHF-A curve shall be used in
the measurements,
Adjust the Input Level control to obtain
0 dB on the VTVM.
2. Record, rewind and play it back.
3. Read the distortion meter and check to
Record and Playback
Tape SW — ZX/SX/EX
Eq. SW — 70 us
VTVM and
400 Hz to
Distortion
Meter
; ;
Fi
h
Input
Jacks
(ZX/SX)
insure
that
the
distortion
is
as
follows:
to
Output
Jacks
120
us
(EX)
EXI].....
1.0%
or
less
Dolby
NR
SW
—
OFF
SX
gow
hee
1.2%
or
less
yn
1.0%
or
less
3 kHz Speed
and Wow/
Flutter Tape
(DA09006C)
Wow/Flutter
Meter to
Output Jacks
Playback
Eq, SW — 70 us Play back and read the wow/flutter meter.
4.2.
Playback
Frequency
Response
Adjustment
R
RIO
R195
Figs,
4.1
and
4.2
show
the
playback
amp,
circuit
for
adjustment
R/P
ya
(nzash
and
the
playback
equalization
curve.
Head
This
adjustment
will
be
required
if
playback
level] is
not
sufficient
during playing back a 20 kHz PB frequency response tape.
The peaking portion of the equalization curve compensates the
gap
loss
of
the
playback
head.
Peaking
level
is
varied
by
the
short
120ps
circuit
of
R110
(R210)
or
R195
(R295).
Lol
{L20)
VRION
(VR201)
Output
390P
Hi
C107 (C207)
C108 {C208} 1000P
GAIN (dB)
100 400 1K 2K 10K 20K
FREQUENCY (Hz)
Fig. 4.2

4.3. Dolby NR Circuit Check
Dolby NR circuit incorporates a Dolby NR IC (ZA7300PC) which
has no adjustment point.
Perform the following checks and make sure that the IC operates
accurately ie., frequency response through IC is accurate.
(1)
(2)
(3)
Signal Source: 1.4 kHz to Input Jacks
Output Connection: VTVM to TP101 (TP201) and
negative side of C141 (C241) on the
Main P.C.B.
Mode: Record/Pause
Connect a VTVM to TP101 (TP201) on the Main P.C.B.
Ass’'y, Feed in 1.4 kHz and adjust the Input level control so
that the VTVM may read 90 mV (0 GB) at each test point.
Level meter will indicate 0 dB.
Remove the VTVM from TP101 (TP201) and reconnect it to
the negative side of C141 (C241).
Decrease the input level (0 dB) by 20 dB or 30 dB.
Check to insure that the level at negative side of C141 (C241)
corresponds to the following with the Dolby NR switch ON
and OFF.
Input Level Level at negative side of C141 (C241)
at TP101 (TP201) | Dolby NR OFF | Dolby NR B-Type
9mV OdB +3.2 dB +1.5 dB
2.85 mV 0 dB +8.2 dB +1.5 dB

MECHANISM ASS’Y AND PARTS LIST
5.
5.1. Synthesis
Fig. 5.1

Schematic aA
Synthesis
Serial No.: A31801001 - (Silver)
HA04494A
0H04263A
0H04358A
0J04628A
OH04306A
0H04240A
0H04155B
OM04377A
0J04630A
0J04629A
0J04762A
0J03564A
OE03054A
0E03033A
OEOO868A
OE00865A
Cassette Case Cover Ass’y
Front Panel BX-100
Front Panel BX-100E
Top Cover Cushion (Front)
Meter Cover
Control Lens
Top Cover
Caution Label
Top Cover Rubber
Top Cover Cushion (Rear)
Synthesis Mechanism Ass’y
Bottom Cover
Leg T-H
BT 3x8 ®Countersunk
BT 4x8 ®Pan Washer-Faced
BT 3x8 @ Binding
BT 3x10 @ Binding
Ce Se See oe oes!
10
Schematic
Ref. No.
Part No.
HA04495A
0H04264A
0H04359A
0J04628A
0H04306A
0H04240A
0HO4156B
OM04377A
0J04630A
0J04629A
03047624
0J03564A
0E03054A
0E03033A
OEOO868A
OEO0865A
Description
Synthesis
Serial No.: A31901001 - (Black)
Cassette Case Cover Ass’y
Front Panel BX-100
Front Panel BX-100E
Top Cover Cushion (Front)
Meter Cover
Control Lens
Top Cover
Caution Label
Top Cover Rubber
Top Cover Cushion (Rear)
Synthesis Mechanism Ass’y
Bottom Cover
Leg T-H
BT 3x8 © Countersunk
BT 4x8 © Pan WasherFaced
BT 3x8 ® Binding
BT 3x10 © Binding
RUPP REP RE Re

5.2. Syntheds Mechanism Ass*y (A01)
11

Schematic
Ref, No,
Pred tp Ler ets
ane aes med ct ce ceo kad
0H04270A
0J04766A
0J04765A
0H04277A
OH04272A
0HO04276A
HA04522A
0H04288A
BA05073A
BA05076A
BA05089A
0H04289A
0H04283A
OJO4767A
0J04703A
0J04704A
BAO5075A
BAO5074A
0H04274A
0C08602A
OJ04764A
0C08604A
0H04309A
BAO5078A
BAO5077A
0H04290A
0J04763A
BA04823A
BA04824A
OBO8511A
OJ04611A
OM04196A
0H04154B
CA08498A
BA05131A
BA05063A
0J04603E
0J04773A
HA04499A
HA04502A
HA04501A
HA04498A
HA04503A
OB08515A
0B82116B
0B82117B
0B82118B
0B82121B
0B82122B
0B82124B
0B82125B
0B82126B
0B82129B
0B82220A
OB82219A
OEOO868A
OEOO766A
0E03074A
0E00233A
0B08583A
OEOO857A
OE00859A
OE00835A
OEO3070A
0E03028A
Synthesis Mechanism Ass’y
Serial No.: A31801001 - (Silver)
Eject Button
Button Joint
Spring
Meter Scale
Memory Switch Knob
Counter Escutcheon
Front Chassis Sub Ass’y
Push Switch Button
Tape Switch P.C.B. Ass’y
Dolby NR Switch P.C.B. Ass’y
Indicator P.C.B. Ass’y
Volume Knob
Volume Plate
Memory Switch Holder
P.C.B. Spacer A
P.C.B. Spacer B
Volume P.C.B. Ass’y
Indicator P.C.B. Ass’y
Counter Knob
Tape Counter
Counter Holder
Counter Belt
Slide Switch Knob
Timer Switch P.C.B. Ass’y
Control Switch P.C.B. Ass’y
Power Switch Button
Power Switch Holder
Power Switch P.C.B. Ass’y
(BX-100 (U.S.A. & Canada))
Power Switch P.C.B. Ass’y
(BX-100 (Australia & Others)
& BX-100E)
Headphone Jack
Headphone Plate
Cassette Label
Cover Plate
Main P.C.B. Ass’y
Side Chassis (L)
Side Chassis (R)
Rear Panel Ass’y BX-100
(U.S.A, & Canada)
Rear Panel Ass’y BX-100
(Australia)
Rear Panel Ass‘y BX-100 (Others)
Rear Panel Ass’y BX-100E (UK)
Rear Panel Ass’y BX-100E
(220V Class 2)
Insu-lock
Ribbon Cable 2P (160mm)
Ribbon Cable 2P (220mm)
Ribbon Cable 2P (300mm)
Ribbon Cable 3P (330mm)
Ribbon Cable 3P (360mm)
Ribbon Cable 3P (410mm)
Ribbon Cable 4P (300mm)
Ribbon Cable 4P (360mm)
Ribbon Cable 6P (280mm)
Ribbon Cable 3P (160mm)
P-D Connector Ass’y
BT 3x8 © Binding
M3x8 © Binding
BT 2.6x8 % Binding
Washer 2.6mm Toothed Lock
Plastic Rivet
BT 3x6 © Binding
BT 2.6x6 @ Binding
BT 3x25 © Pan
M2.6x6 © Binding
BT 3x8 @ Binding (Nickel)
PS beh eke Bek a beak ed Beh ba Be ett Ba fed Bed Ba bet td fa Dad ad eed O00 De et ND Pd Det pe Ped
ry
MEH ONE ROR OME HH NMR ENON Be
=
12
rritrdtra rig
OHO4269A
0J04766A
OJ04765A
OHO4277A
OH04271A
OH04275A
HA04523A
0H04248A
BA0S073A
BAO5076A
BA05089A
OHO4247A
0H04283A
OJO04767A
0J04703A
0J304704A
BAO5075A
BA05074A
0H04273A
O0C08602A
0J04764A
0C08604A
0H04242A
BA05078A
BA05077A
0H04243A
0J04763A
BA04823A
BA04824A
OBO8511A
OJ04611A
OM04196A
0H04154B
CA08498A
BA05131A
BA05063A
0J04603E
0J04773A
HA04505A
HA04508A
HA04507A
HA04504A
HA04509A
OBO8515A
0B82116B
0B82117B
0B82118B
0B82121B
0B82122B
0B82124B
0B82125B
0B82126B
0B82129B
0B82220A
OB82219A
OEOO868A
OEOO766A
OEO03074A
O0E00233A
0B08583A
OEOO857A
OE00859A
OE00835A
OE03070A
OE00921A
Synthesis Mechanism Assy
Serial No.: A31901001 - (Black)
Eject Button
Button Joint
Spring
Meter Scale
Memory Switch Knob
Counter Escutcheon
Front Chassis Sub Ass’y
Push Switch Button
Tape Switch P.C.B. Ass’y
Dolby NR Switch P.C.B. Ass’y
Indicator P.C.B. Ass’y
Volume Knob
Volume Plate
Memory Switch Holder
P.C.B. Spacer A
P.C.B. Spacer B
Volume P.C.B. Ass’y
Indicator P.C.B, Ass’y
Counter Knob
Tape Counter
Counter Holder
Counter Belt
Slide Switch Knob
Timer Switch P.C.B. Ass’y
Control Switch P.C.B. Ass’y
Power Switch Button
Power Switch Holder
Power Switch P.C.B. Ass’y
(BX-100 (U.S.A. & Canada))
Power Switch P.C.B. Ass’y
(BX-100 (Australia & Others)
& BX-100E)
Headphone Jack
Headphone Plate
Cassette Label
Cover Plate
Mechanism Ass’y
Earth Wire
Main P.C.B. Ass’y
Side Chassis (L)
Side Chassis (R)
Rear Panel Ass’y BX-100
(U.S.A. & Canada)
Rear Panel Ass’y BX-100
(Australia)
Rear Panel Ass’y BX-100 (Others)
Rear Panel Ass’y BX-100E (UK)
Rear Panel Ass’y BX-100E
(220V Class 2)
Insu-lock
Ribbon Cable 2P (160mm)
Ribbon Cable 2P (220mm)
Ribbon Cable 2P (300mm)
Ribbon Cable 3P (330mm)
Ribbon Cable 3P (360mm)
Ribbon Cable 3P (410mm)
Ribbon Cable 4P (300mm)
Ribbon Cable 4P (360mm)
Ribbon Cable 6P (280mm)
Ribbon Cable 3P (160mm)
P-D Connector Ass’y
BT 3x8 ©@ Binding
M3x8 © Binding
BT 2.6x8 © Binding
Washer 2.6mm Toothed Lock
Plastic Rivet
BT 3x6 @ Binding
BT 2.6x6 © Binding
BT 3x25 @ Pan
M2.6x6 ® Binding
BT 3x8 © Binding
(Black Chromate)
Pat Beh ek bak a ek ek ee ek a et et et Bt et td et
ed
Ld
BE RORHNWOAUH HEHE NMHC NE Bet ee ee eee
:

5.3. Mechanism Ass’y (B01)
38 50
oA .
>
Fig. 5.3
5.4, Rear Panel Ass’y (B02)

CA08498A
o1 CA80001A
02 0G01371A
03 OC80001A
04 0G01365A
05 0C80044A
06 OC 80045A
07 0C80003A
08 0C80004A
09 OC80005A
10 OC80006A
11 CA80002A
12 CA80003B
13 CA80004B
14 OC80007A
15 CA80005A
16 O0C80008A
17 0C80009A
18 0C80010B
19 0C80043A
20 0C80012A
21 0C80013A
22 0C80014A
23 0C80015B
24 0C80016A
25 OC80017A
26 0C80018A
27 0C80019B
28 0C80020A
29 OC80021A
30 CA80006A
31 0C80022B
32 0C80023A
33 0C80024A
34 0C80025A
35 0C80026A
36 0C80027A
37 CA80007A
38 0C80028A
39 CA80011A
40 0C80029A
41 0C80030A
42 CA80008B
43 0C80031A
44 0C80033A
45 0C80034A
46 CA80009A
47 0C80035A
48 0C80036A
49 CA80010A
50 0C80037A
51 0C80040A
52 OC80041A
53 0C80042A
LO1 0C80046A
L02 OE03038A
L03 OE03053A
L04 0C80048A
0C80038A
0C80039A
L05 OE03046A
L06 0E03042A
LO7 0E03049A
LO8 OEO03050A
L09 OE00222A
L10 0E03043A
Lil OE00698A
L12 OE03052A
L13 OEOO181A
L14 0E03048A
L1i5 OE03036A
L16 0E03044A
LIT OEO0691A
118 0E03045A
L19 OEO3051A
L20 0E03037A
OE03047A
0E03041A
0E03040A
0E03035A
Mechanism Ass
Serial No.: Agi. 901001 -
Cassette Case Ass’y
Record/Play back Head RP-2G
Azimuth Adjust Spring
Erase Head E-2D
Erase Head Collar
Record/Playback Head Collar
Head Base Hold Plate
Steel Ball 30
Reinforce Plate
Head Base
Brake Ass’y
Take-up Reel Hub Ass’y
Supply Reel Hub Ass’y
Steel Ball 20
Pressure Roller Ass’y
Pressure Roller Spring
Cassette Case Spring
Cassette Case Holder R
5P-H Connector
Eject Sensor
Lock Lever Spring
Lock Lever Collar
Lock Lever
Brake Spring
Record Protector Lever
Cassette Case Holder L
Eject Spring
Eject Lever Spring
Eject Lever
Pneumatic Damper Ass’y
Cassette Hold Spring
Mechanism Chassis
Record Protector
Record Protector Holder
Cam
Mode Switch
Control Motor Ass’y
Control Motor Holder
Shut-off P.C.B. Ass’y
Back Tension Spring
Reel Motor Holder
Reel Motor Ass’y
Capstan Flange
Flywheel
Capstan Belt
Flywheel Holder Ass’y
Sleeve
Floating Rubber
Capstan Motor Ass’y
Insu-Lock
2P-H Connector
4P-H Connector
9P-H Connector
Azimuth Adjust Screw
M2x12 © Binding
Wire Holder
Shim 0.03T
Shim 0.06T
Shim 0.1T
M2.6x6 ® Pan (2A)
FT M2.5x5 © Pan
Washer 1.8mm FT
Washer 3.1mm FT
E-Ring 2mm
FT M2.5x10 @Pan
E-Ring 2.5mm
Stopper Ring 2.4mm
E-Ring 3mm
FT M2.6x6 @Pan
M2x4 @ Pan (2A)
FT M2.5x20 @ Pan
M2x3 © Pan
M2.6x3 © Binding
Capstan Washer
M2x5 © Pan (2A)
M2.6x9 ® Pan
FT M2.5x4 @ Pan
FT M2.5x3.5 @ Pan
M2x3.2 © Truss
HED Bek bed ad bk LCA CD Pt Ba ed Bat ed Bet C8 tek Bak C0 Pet Pat fet Bek ak Bet bah fed ed ad a bed fk Pak bak ped fe Bak ek be 009 Ba bed beh fed fad a Be te Bed bd
HEN OH EN NEE RON eee
HA04499A
HAO4501A
HA04502A
HA04498A
HA04503A
0H04298A
0HO04362A
0B81001A
OB50017A
OB50009A
0B50010B
0B08037U
OB08351A
0B08533A
0B08348A
0B08093U
OB05241A
0J04622B
0M04407A
0B07092U
OE03028A
0E03024A
0B08583A
OEO03031A
HA04505A
HA04507A
HA04508A
HA04504A
HA04509A
0H04299A
HA04363A
0B81001A
OBS50017A
OB50009A
0BS0010B
0B08037U
OB08351A
0B08533A
0B08348A
O0B08093U
OBO5241A
0J04601B
0303948A
OE00921A
OEO0915A
OBO8583A
OE00818A
14
Rear Panel Ass’y BX-100
(U.S.A, & Canada)
Rear Panel Ass'y BX-100 (Others)
Rear Panel Ass’y BX-100
(Australia)
Rear Panel Ass*y BX-100E (UK)
Rear Panel Ass’y BX-100E
(220V Class 2)
Serial No.: A31801001 - (Silver)
Rear Panel BX-100
Rear Panel BX-100E
4P Pin Jack
Power Transformer (BX-100
(U.S.A. & Canada))
Power Transformer (BX-100
(Australia) & BX-100E)
Power Transformer (BX-100
(Others))
Cord Bushing 4P-4 (BX-100)
Cord Bushing 4K-4 (BX-100E
(UK))
Power Cord (BX-100 (U.S.A.,
Canada & Others))
Power Cord (BX-100E (UK))
Power Cord (BX-100E
(220V Class 2))
Power Cord (BX-100 (Australia))
Switch Cover Gray (BX-100
(U.S.A., Canada & Australia)
& (BX-100E)
Voltage Selector Lock Plate Gray
(BX-100 (Others))
Voltage Selector (BX-100
(Others))
BT 3x8 © Binding (Nickel)
BT 4x8 © Binding
Plastic Rivet
M3x8 @ Binding (Nickel)
Rear Panel Ass’y BX-100
(U.S.A, & Canada)
Rear Panel Ass’y BX-100 (Others)
Rear Panel Ass’y BX-100
(Australia)
Rear Panel Assy BX-100E (UK))
Rear Panel Ass’y BX-100E
(220V Class 2)
Serial No.: A31901001 - (Black)
Rear Panel BX-100
Rear Panel BX-100E
4P Pin Jack
Power Transformer (BX-100
(U.S.A. & Canada))
Power Transformer (BX-100
(Australia) & BX-100E)
Power Transformer (BX-100
(Others))
Cord Bushing 4P-4 (BX-100 &
BX-100E (220V Class))
Cord Bushing 4K-4 (BX-100E
(UK))
Power Cord (BX-100 (U.S.A.,
Canada & Others))
Power Cord (BX-100E (UK))
Power Cord (BX-100E
(220V Class 2))
Power Cord (BX-100 (Australia))
Switch Cover Black (BX-100
(U.S.A., Canada & Australia)
& BX-100E)
Voltage Selector Lock Plate Black
(BX-100 (Others))
BT 3x8 © Binding
(Black Chromate)
BT 4x8 © Binding
(Black Chromate)
Plastic Rivet
M3x8 @ Binding
(Black Chromate)
th
ee
He ee MINN Oe oe
ee
Ne NN NN Fe

6. MOUNTING DIAGRAMS AND PARTS LIST
Notes: 1. Mounting diagram shows a dip side view of the printed circuit board.
2. Diode is 18853, 181555, or 1SS176 unless otherwise specified.
3. Following transistors are interchangeable with each other.
a. 2SA733, 2SA608SP, 2SA1048, 2SA1175
b. 2SC945, 2SC536SP, 2SC 2458, 2SC2785
4. Abbreviation for part name:
TR — Transistor, SiD — Silicon Diode, GD — Germanium Diode, ZD — Zener Diode
RK — Carbon Resistor, RM — Metal Film Resistor, RF — Fail Safe Type Resistor, RC — Cement Resistor,
RW — Wire Wound Resistor
CE — Electrolytic Capacitor, CM — Mylar Capacitor, CC — Ceramic Capacitor, CP — PP Capacitor,
CT — Tantalum Capacitor, CM — Film Capacitor, C — Mica Capacitor
sauemate | rene. | pesroton
BA04823A | Power Switch P.C.B.
Ass’y (BX-100
(U.S.A. & Canada)
Power Switch P.C.B.
Ass’y (BX-100
(Australia & Others)
& BX-100E)
6.1, Power Switch P.C.B. Ass’y
AC Input
te Power
Tronstormer
BA04824A
Power Switch P.C.B.
Power Switch
Spark Killer
(BX-100 (U.S.A, &
Canada))
0B02573D
swl 0B70002A
OB08342A
to Power Transformer
Fig. 6.1
OB08955. ‘k Kill
6.2. Shut-off P.C.B. Ass’y ‘ * eex-100 Caiseeailn
& Others) &
BX-100E)
OE00752A | Eyelet 2x3 (2)
OB08359A | Spark Killer Cover
(BX-100 (Australia
& ney res &
put BX-100E£)
i Eppa 0J04763A | Power Switch
= S “o-————~ sno Holder (1)
OE00612A | M3x6 @ Pan ys
ye ae
° BCL 10 Logie Port
R603 680,
ii cvmmdamneated
Dacre haere “ge way
Shut-off P.C.B. Ass’y
CA80011A
Shut-off P.C.B.
TR 2SC2812
Photo Reflector
NJL5141
RK 680 _ Leadless
RK 18K _ Leadless
OC80047A
Q601 OB06388A
OB06389A
Fig. 6.2
6.3,
Control
Switch
P.C.B.
Ass'y
R601,603
OB09840A
OBO9841A
R708 1K
OW
Control Switch
P.C.B. Ass’y
BAO5077A
Control Switch
P.C.B.
TR 2SA1175
TR 2S8C2785
LED TLG124A
OB60036B
R704 270
Q701 OB06455A
Q702 OB06456A
0B06334A
GRN
LED TLR124A
RED
SiD 18853
iD 1SS176
150) «1/6Wd
RK 390: 1/6WwJ
0B06333A
OBOG181A
OBO6398A
| OBO9657A
R703 !OBO9667A
ow-o
Vol rvov 10x
One ites R704 OBO9663A {RK 270 1/6WJ
-lom™ R705 OB09693A {RK 4.7K 1/6W J
el.
R706,708
{OBO9677A
{RK
1K
1/6WJ
R707 OBO9701A |RK 10K 1/6wJ
joj...
“Led
CM 0.015 50V J
Touch Switch
4.3mm
LED Reflector
c701 OBO5557A
SW701-708 | OB70004A
(6)
Timer Switch P.C.B,
Ass’y
OJ04744A
BAO05078A
~~
NS
Om ee 9
ha |
LEDTO
Ce
awros |
Pause swros |
Stop
o
ary
LeoTos6
6 0B60037B | Timer Switch P.C.B,
-—4 R709 OB09687A |RK 2.7K 1/6WJ
SW601 0B07437A | Slide Switch 2-3
OB81011A | Dip Mate 4P qq)
Fig. 6.3
15

6.4.
Timer
Switch
P.C.B,
Ass’y
6.5.
Volume
P.C.B.
Ass’y
6.8.
Indicator
P.C.B.
Ass’y
rT cea
( coheed o7
to Timer Switch P.C.B.
rIc30l
nT ATEIZAR....
0B60032B | Tape Switch P.C.B.- 0B09163A 10u 16V (BP)
0B06332A | TR 2SB564M FC18,19 0B02356A | JP Connector 12P
OBO6688C | Bias Osc. Unit (eb)
0B32010A | Semi-fixed VR 47K 0B81011A | Dip Mate 4P = (2)
0B81012A | Dip Mate 5P (1)
| Fig. 6.4
Fig. 6.8
a 2
a
|
g
i
@
BA05075A
|
Volume
P.C.B.
BA05074A
|
Indicator
P.C.B.
Py) Ass’y Ass’y
0B60034B | Volume P.C.B. 0B60033B | Indicator P.C.B.
VR110,210
|
0B31002A
Slide
Volume
100K
|
1¢301
OB06369A
|IC
TA7612AP
(A) 1C701 0B11031A | IC TLO92
LED301 0B06333A | LED TLR124A RED] Q701 0B06013A | TR 2SA733 (P,Q)
R101,201 | 0B09733A | RK 220K 1/6WJ | Zp701,702 | 0B06191A | ZD 2.7V RD2.7E
|
C101,201
OB09282A
|
CC
100P
50V
K
D301,302
0B06181A
|
SiD
1SS53
SW601,602 | 0B07462A | Push Switch D701,702 O0B06398A iD 1SS176
; Cds301 0B06325B | Photocoupler 703,704
Fig. 6.5 MCD7214F R301-310 | 0B09681A 1/6w J
0B81002A | Dip Mate 2P R311 0B01857A 1/4w J
J ‘ 0B81011A | Dip Mate 4P R312 0B01888A 1/4w J
| 0B81012A | Dip Mate 5P R313 OBO09797A 1/4wJ
R314 0B01887A 1/4wW J
' 6.6. Dolby NR P.C.B. Ass’y 6.7, Tape Switch P.C.B, Ass’y BA05076A | Dolby NR Switch R701,702 | 0B09725A 1/6w J
P.C.B. Ass’y 705,709
710,715
0B60035B | Dolby NR Switch 0B09717A 1/6w J
'B 0B09713A 1/6w J
R301,302 | 0B09677A 1/6w J OB09737A 1/6w J
SW305
0B70008A
|
Push
Switch
70
0B09749A
1/6w
J
i
0B81012A
|
Dip
Mate
5P
(1)
OB09677A
1/6w
J
H
0J04768A
|
Earth
PlateA
(1)
0B09709A
1/6w
J
OB09685A 1/6w J
|
BA05073A
|
Tape
Switch
P.C.B.
0B09701A
1/6W
J
i
Ass’y
0B09281A
150P
50V
K
1 OB09868A O.1p 50V J
0B32009A | Semi-fixed VR 22K
OB09653A | RK 100 1/6WJI
OBO9695A 5.6K 1/6WJ
OB09707A 1/6w J
OBO09705A 1/6w J
0B09263A 1/4W J
0B09831A lw J
OBO09837A 10 lw J
C118,218 0B09283A 220P 50V K
vanes OB05796A 0.047 50V J
3
C304,305 | 0B09187A 1u 50V (BP)
C306 OB09828A 8200P 100V J
C307 0B41229A 1500P 100V J
C308 0B01403A 47u 16V
| SW301-304 | O0B70005A | Push Switch
0B81010A | Dip Mate 3P
: 0B81011A | Dip Mate 4P
Fig. 6.7 0B81012A | Dip Mate 5P
OB81051A | 2P-S Post
0J04768A | Earth Plate A
Z2E0098
“ok
SM-2: FC-s
16

|
genenmate Part No. Description en pande Part No. Description
Ref. No. Ref, N
Q101,102
201,202
Q103,203
ZD301
D301
L101,201
VR101,201
R101,201
R102,202
BA05063A | Main P.C.B. Ass’y
— PB Eq. Amp. —
0B06142A | TR 2SC2240 (BL)
0B01872A | TR 2SC945L (P,Q)
0B12009A | ZD 10V RD10JB2T
OB01909A | SiD 181555
0B03919B | Inductor 36mH
0B32009A | Semi-fixed VR 22K
0B09741A | RK 470K 1/6W J
OB09330A | RK 100K 1/4WJ
(Noiseless)
0B01889A 100K 1/4W J
0B01706A 47. 1/4wJ
0B09731A 180K 1/6W J
O0B09685A 2.2K 1/6WJ
OB09711A 27K 1/6WJ
0B22307A 4.87K 1/4W F
0B22287A 3.382K 1/4W F
0B09673A 680 1/6WJ
0B01887A 5.6K 1/4WJ
0B09703A
OB09677A
0B01857A
0B09137A
0B09283A
0B01403A
0B01863A
0B05832A
0B41002A
OB05550A
OBO9868A
0B01400A
0B90011A
0B02242A
22u 25V (LN)
220P 50V K
3u
0.018u 50V J
390P 100V J
1000P 50V J
0.14 50V J
100u 16V
DS Relay
4P-T Post
— Rec, Eq. Amp. —
OBO6387A |IC 2043DD
OB06299A | TR 2SC2878
OBOO068A | Trap Coil 10.5mH
OBO6696A
0B09711A 1/6W J
OBO9701A | RK 1/6w J
0B09725A 1/6w J
OBO9677A 1/6w J
1/6w J
1/6w J
OBO9665A
OBO9669A
0B09715A
OB09697A
0B05936A
0B01684A
3900P 50V J
0.472 50V
22u 16V
5600P 50V J
5100P 50V J
104 16V
0.068u 50V J
47P 50V J
1p 50V (BP)
474 6.3V
OB09187A
OB09815A
— Rec. Level —
0B11027A {IC TC9145P
0B01872A |TR 2SC945L (P,Q)
0B32009A | Semi-fixed VR 22K
0OB32008A | Semi-fixed VR 10K
0B09705A 15K 1/6wWJ
7.16K 1/4W F
8.2K 1/6wWJ
10K
18K
0B09701A 10K
OB05629A 2.7K
OB09709A 22K
R301,302
303, 304
305
C119,219
C120,220
C121,221
C122,222
C123,223
1C101,201
2D 102, 202
D30:
Lio4, 1204
R164,264
R166,166
265,266
306,309
R167,267
R168,268
R169,269
R170,270
R171,271
R172,272
R173,273
R174,274
R175,275
R176,276
R177,277
R178,278
331
R179,279
R180,181
280,281
R182,183
282,283
R702,802
C131,132
231,232
C163,263
IC302
Q108,109
208,209
R150,153
250,253
R151,251
R152,156
161,252
256,261
R157,257
R158,258
R159,259
R160,260
R162,262
C130,230
0B09725A
OB05571A
0B05843A
OBO5659A
0B09993A
0B01913A
— Dolby NR
0B06200A
0B06144A
0B01872A
OBO6167A
0B06181A
OBO6690A
0B05923A
0B09725A
OBO9677A
0B09700A
OB05629A
OBO9695A
0B22286A
OBO9717A
OBO9696A
0B05620A
0B05625A
0B09735A
0B09688A
0B09701A
OB09693A
OBO5671A
OBO09709A
OBO1679A
0B09332A
0B09223A
0B09240A
0B01862A
0B01402A
0B05583A
0B01780A
OBO09327A
0B01412A
0B01400A
OBO5884A
0B09189A
OBO5687A
0B05652A
0B09279A
100K 1/6WJ
680P 50V J
CM 0.012u 50V J
CM 5600P 50V J
CM 820P 50V J
1800P 50V J
IC pAT300PC
IC muPD4066BC
TR 2SC945L (P,Q)
ZD 6.2V RD6.2EB3
SiD 18853
RF 1/6w J
1/6w J
1/6W J
1/6w J
1/6w J
1/4W J
1/6W J
1/4W
2.2u 50V (LN)
1p 50V (LN)
0.0334 100V G
22u 16V
4.7% 16V
0.0334 50V J
0.1 50V J
0. 3 50V (LN)
10u 16V
100n 16V
470u 10V
2700P 50V J
1200P 50V J
4700P 50V J
22P 50V K
— Headphone/Line Amp. —
0B06370A
0B06299A
0B09725A
OB09697A
OBO09677A
OB09694A
0B09711A
0B09731A
0B09641A
OBO9685A
OB09709A
0B09729A
0B01406A
0B01403A
0B01400A
0B01412A
4556D
2S8C2878
100K 1/6W J
6.8K 1/6W J
1/6w J
22K
150K 1/6wJ
lu 50V
47u 16V
100u 16V
104 16V
Q105,106
107,205
206,207
ZD101,201
D101,201
D102,202
303
VR108,208
R141,241
R142,242
R143,243
R144,244
R145,146
245,246
R147,148
247,248
R149,249
R320
C124,224
C125,225
308
R645,646
KelNo."
— Meter Amp. —
0B01872A | TR 2SC945L (P,Q)
0B12101A
OB06398A
ZD $V 5C-1
SiD 188176
0B06181A | SiD 18853
0B32011A | Semi-fixed VR 100K
0B09713A K 33K 1/6wJ
0B01889A 1/4w J
0B09743A 1/6W J
0B09729A 1/6W J
0B09725A 1/6W J
0B09719A 1/6W J
0B09709A 1/6w J
OB09216A 1/4w J
OB09570A 0.15u 50V (LN),
0B09148A 10u 25V (LN)
0B01400A 100n 16V
— Logic —
0B06178A
0B06214A
0B11020A
0B06332A
0B01872A
#PD4011BC
uPD4071BC
TMP4315BP-
1814
2SB564M
2SC945L (P,Q)
0B10021A
0B06013A
28D1164 (KL)
28A733 (P,Q)
OBO6371A
OB06372A
0B06322A
OBO6066A
0B10023A
0B06398A
2SD1286
2SA953 (K,L)
2SC2002 (K,L)
2SD471 (L,M)
2SC2002 (K)
188176
0B12100A
0B06181A
OBO6689A
OB32007A
OB09749A
0B09725A
Double SiD MC921
SiD 18853
L-C Block
Semi-fixed VR 470
RK 1M_ 1/6wJ
RK 100K 1/6WJ
OBO97T01A
OBO9617A
OBO05509A
OB09729A
0B09217A
OB09737A
OBO9711A
OBO9695A
OB09663A
0B09672A
0B01854A
OB09699A
OB06706A
OBO1679A
0B01933A
OB24007A
OBO97TO7A
OB09741A
OBO9677A
1/6w J
1/4w J
1/4w J
0B01889A
0B01846A
0B09733A
peoeaeee
Ref. N
C402
C403
C404
C405,406
C407
C408
C409
C411
C412
0B05629A
0B09705A
0B09693A
0B09713A
0B09803A
0B09824A
OBO09681A
0B24023A
0B40079A
0B01405A
0B40024A
0B01802A
0B09290A
0B40178A
OB09817A
0B08715A
0B02245A
0B02243A
0B81025A
—DC Supply —
0B06380A | IC NJM7812
0B06322A | TR 2SC2002 (K,L)
0B01872A | TR 2SC945L (P,Q)
OBO6167A | ZD 6.2V RD6.2EB3
0B12003A
OB06282A
0B12100A
OB06398A
0B24006A 560
0B01857A 1K
OBO9671A
0B24007A
0B09725A
OB09707A
OBO9695A
OBO9665A
0B09693A
0B09713A
0B09719A
0OB40151A
0B01392A
0B01403A
0B09292A
0B09799A
OBO09798A
0B40011A
0B01405A
0B01398A
0B08676B
OE00507A
0E00612A
OEO0857A
RK 2.7K 1/4wJ
RK 15K 1/6wWJ
RK 4.7K 1/6WJ
RK 33K 1/6wJ
R-Network 47Kx5
R-Network 100Kx5
RK 1.5K 1/6wJ
R Fuse 1
220u 16V
1p 50V
0.33u 50V
2200P 50V J
0.01u 50V Z
0.474 50V
33u 10V (LN)
Themnal Fuse 129
9P-T Post
5P-T Post
2P-T Post (1)
Double SiD MC921
iD 1SS176
1w J
1/4W J
4700p 25V
6800u 16V
33u 16V
1p 50V
220u 16V
Heat Sink qd)
Nut Hex. M3
(Chromate) (1)
M3x6 @Pan (2a)
qd
BT 3x6 © Binding
(Chromate) (2)
— Miscellaneous —
Main P.C.B.
Dip Mate 2P
Dip Mate 3P
Dip Mate 4P
Dip Mate 6P
0B86031B
0B81002A
0B81010A
0B81011A
0B81013A
17

|
|
6.9. Main P.C.B. Ass’y
2scz%
31
BECOs
S.
Liaz
% 0.5m
Ss
18
Fig. 6.9.1 2nd Version

i
|
|
|
a
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]
1
i
H
|
i
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|
i
a
|
|
i
i
1
{
i
i
|
f
i
{
i
{
1
“
Au
¥
Ic 30
TC9I45P
_ty SOVILNI
a
Fig. 6.9,2 1st Version
19
2a 250V
Faor
280945.)