Aiwa AD-6550EE User manual

|
CASSETTE
:
DECK
Semiconductors:
Power source:
Power consumption:
Dimensions:
Weight:
Track system:
Tape speed:
Wow & flutter:
Automatic shut-off
action time:
Pinch roller pressure:
Take-up torque:
FF & rewind torque:
FF & rewind time:
Playback output:
(TTA-161)
Playback noise:
Rec./pb output:
(400 Hz 0 VU)
Rec./pb distortion:
(400 Hz0 VU)
Rec./pb S/N:
(400 Hz 0 VU)
(UNn- Weighted )
Channel separation:
Cross talk:
Erasing ratio:
SPECIFICATIONS
4 IC’s, 45 transistors,
35 diodes & 2 LED's
AD-6550EE:
AC
110~120
V/220~240
V
(switchable)
50/60
Hz
AD-6550UK: AC 120 V/240 V
(switchable) 50/60 Hz
10 W
420(W) x 150(H) x 330(D) mm
7.5 kg
4-track 2-channel stereo
4.76 cm/sec. +1%
0.1% (According to DIN 45 500 Blatt 8)
4 +1 sec.
375 +30g
50 +10 g-cm
125 +25 g-cm
Less than 95 sec. (w/C-60 cassette)
1.05 +0.05 V (LINE/DIN)
Less than 4.5 mV (LH)
Less than 3.0 mV (Fe-Cr, CrO, }
O VU +£0.5 dB (LINE/DIN)
Less than 2.0% (LH)
Less than 1.5% (Fe-Cr)
Less than 3.0% (CrO, )
More than 43/45 dB (LH, DOLBY
OFF/ON)
More than 45/48 dB (Fe-Cr, DOLBY
OFF/ON)
More than 45/48 dB (CrO,, DOLBY
OFF/ON)
More than 28 dB (at 1 kHz 0 VU)
More than 65 dB (at 1 kHz 0 VU)
More than 60 dB (400 Hz +10 VU)
@ Dolby Noise Reduction System is
AIWA
(SERVICE MANUAL)
a a a
Set using 1SO screws
DATE OF ISSUE 26/7/1977
100 kHz +10 kHz
LH tape, 20~15 kHz (—10 dB)
30~13 kHz (+3 dB)
Fe-Cr tape, 20~17 kHz (—10 dB)
30~15 kHz (+3 dB)
CrO, tape, 20~17 kHz (—10 dB)
30~15 kHz (+3 dB)
(at Dolby off, Rec./pb)
Bias frequency:
Frequency response:
Motor: 38 pulse FG servo motor
Head: Ferrite guard head (FGH)
Input: MIC: Max. input semsitivity 0.3 mV
(200 2 ~ 10 kQ suitable)
LINE IN: Max. input sensitivity 50 mV
(More than 50 kQ)
DIN: Max. input sensitivity 0.1 mMV/kQ
(3 kQ)
Output: LINE OUT: Standard output level
0.775 V (0 VU)
Optimum load impedance
more than 50 kQ
DIN: Standard output level
0.775 V (0 VU)
Optimum load impedance
more than 50 kQ
PHONES: 3.4 mV (+3 VU)
Load impedance 8 2
@ Specifications and external appearance are subject to change
without notice due to product improvement.
licensed from Dolby
Laboratories Incorporated.
@ Thename “Dolby” and the ‘Double D” symbol! are trademarks
of Dolby Laboratories Incorporated.

MODEL AD-G550EE,UK
DISASSEMBLY INSTRUCTIONS
To Remove Cabinet
Remove 7 screws.
Unies satdne = U@4—6(Black)
UT) i3— 8 (Black )
UG4—6(Black)
{
To Remove Power Circuit Board
Remove 3 screws.
Hees wie
VIT@O3—~—5
-
sf
To Remove Main Circuit Board
Remove 2 screws.
VIT@®3I—-5
To Remove Bottom Cover
Remove 4 screws.
e —VITH 3-5
VITH3—5
To Remove MIC/PHONE Jack Circuit Board
Remove 2 screws.
To Remove DIN Circuit Board
Remove 3 screws.
MIC.“ PHONE JACK circuit board
|
sS
UD3-5 ats
NOY
NN kT)
DIN circuit _ OP
SS.
“a.
~
~~
To Remove Rec. Volume Circuit Board
Remove mounting nut.

IWA
MODEL
AD-6550EE,UK
To Remove Front Panel To Remove Mechanism
Pull out the 6 knobs and remove 9 screws. Remove 5 screws.
VITH3—§
To Remove Front Chassis To Remove LH Bias Volume Circuit Board
Remove mounting screw. Remove mounting nut.
To Remove Lamp Circuit Board To Remove Eq./Switch Circuit Board
Remove mounting screw. Remove 4 screws and nut.
VT @2.6—6

MODEL AD-6550EE,UK
EXPLODED VIEW-—1
AIWA:

IWA
MECHANICAL PARTS
146
1-7
1-8
1-9
1-10
1-11
1-12
1-13
1-14
1-15
Part No.
09-047-084-01
82-397-003-01
82-397-018-01
82-397-250-01
82-397-246-01
82-387-028-01
82-397-027-01
82-397-004-01
82-397-245-01
82-380-439-01
82-397-293-01
82-397-021-01
82-397-019-01
82-397-023-01
82-399-024-01
82-397-062-01
Part No.
Changed to
PARTS LIST
Description
Pane! Assembly
Panel, Front
Window, Meter
Cover, Selector button
Cover, Reset button
Guide, Lever switch
Ring, AC switch button
Cabinet, Steel sach
Himeron cloth, Cabinet
Spacer, Back panel
Bottom lid
Knob B ass’y, RECORD LEVEL
Knob Aass’y, RECORD LEVEL
Knob ass’'y, OUTPUT LEVEL
Knob ass’y, TAPE SELECTOR
Knob, LH BIAS FINE
MODEL AD-6550EE,UK
AD-6500
*
*
m * Mark in this part fist shows exclusive part
(which is used) for only Model AD-6550.
NAN =
EBay |] ao os oa a oa a
Part No.
87-327-074-01
Description
UT2 +2.6-8 (Black)
O'ty
Description O'ty
U + 4-6(Black)
87-257-169-01
1-102 87-233-094-01 | Q+3-6 1-106 87-081-481-01 | VTT + 3-5
1-103 87-233-095-01 | Q+ 3-8 1-107 87-081-499-01 | PW4-8-0.25
1-104 87-326-095-01 | UT: + 3-8(Black)

AIWA
MODEL AD-6550EE,UK
EXPLODED VIEW-—2
UK model only

WA
Part No.
Part No.
Description
MODEL AD-6550EE,UK
2-102
2-103
2-104
2-105
2-106
2-107
2-108
2-109
82-397-201-01
82-399-025-01
82-385-382-01
82-385-383-01
82-397-324-01
82-397-028-01
82-397-017-01
82-397-030-01
82-397-031-01
82-397-032-01
82-397-316-01
82-397-239-01
82-397-210-01
82-397-029-01
82-397-061-01
, 82-397-902-01
82-397-330-01
87-034-835-01
87-034-848-01
82-397-014-01
82-397-063-01
82-386-629-01
82-397-008-01
82-397-009-01
87-085-102-01
87-033-088-01
87-038-039-01
84-184-242-01
82-397-318-01
82-397-232-01
82-397-319-01
82-272-424-01
82-397-229-01
82-397-243-01
81-301-040-01
82-397-334-01
82-397-317-01
87-085-144-01
82-397-248-01
82-397-310-01
82-397-335-01
82-397-241-01
82-397-054-01
82-397-235-01
87-040-090-01
82-387-273-01
82-380-457-01
82-397-694-01
82-397-244-01
87-085-094-01
87-085-095-01
87-056-008-01
87-056-014-01
Changed to +
Description
Amp. chassis assy
AC switch button ass’y
Rod, P
Stopper, Rod
Holder, Circuit board
Reset button
Name plate, Meter
Window, Counter
Lens, DOLBY
Lens, REC
Spring, Reset
Lever, Reset button
Front chassis
Selector button
Selector button (blue)
Shaft, Selector
Shaft, DIN circuit board
AC cord (EE model only)
AC cord (UK model only)
Name plate, Spec. (EE model only)
Name plate, Spec. (UK model only)
Shield plate, Jack
Jack plate (EE model only)
Jack plate (UK model only)
Nylon rivet
Earth terminal
Wire binder
Rubber, Sound-proof
Stide rod, PAUSE
Holder, Solenoid
Stide rod, Auto A
Spring, Brake
REC holder ass’y
REC lever A
Cushion, Circuit board
Auxiliary plate
Slide rod, REC
Leg
REC fever C
Spring, REC
Spring, REC-C
REC lever B
Cover, DIN
Collar, LED
Counter
Holder, Jack
Stopper rubber, Up-plate
Earth lug
Holder, AC cord
Holder A, AC cord
Holder B, AC cord
Label, AC cord (UK model only)
Tag, Main voltage (UK model only)
AD-6300
AD-6300
Description
SPeePe roe nNeranNer ae saan Prose sn nn sennyNnNenw We sana nn es Po Waaennnnsnan py goeas
Q
<
87-257-033-01
87-253-071-01
87-253-093-011 |
87-253-170-01
87-261-101-01
87-233-035-01
87-233-094-01
87-233-095-01
87-341-095-01
U + 2-4(Black)
U + 2.6-4
U+3-5
U+4-8
V + 3-18
Q+ 2-6
Q+3-6
Q+3-8
UT, +38
APA NANN AN AHN
Ref. No.
2-110 87-351-073-01
2-111 87-480-093-01
2-412 87-480-169-01
2-113 87-081-481-01
2-114 87-433-906-01
2-115 87-441-006-01
2-116 87-441-009-01
2-117 87-391-024-11
VT, + 2.6-6
VS + 3-5
VS + 4-6
VIT +35
WTIE4-10
STE-2.3
STE-3
N4
RP SenNaAYUNN =

AIWA
MODEL AD-6550EE,UK
EXPLODED VIEW-3
Soy
-
“A
By
DO
$e)
i
\
A
\
“O\\
/
eo
Om ©
eS) e \
p
WV
z
ry a
a }
<a
7
POM
¥
AY
_
oR
Ae
-
ran
Y
Yea
.
Ye @

\IWA
Part No.
——1-
Part No.
Changed to
3-9
. 3-10
3-11
3-12
3-13
3-14
3-15
3-16
3-17
3-18
3-19
3-20
3-21
3-22
23~36
3-23
3-24
3-25
3-26
3-27
3-28
3-29
3-30
3-31
3-32
3-33
3-34
3-35
3-36
3-37
3-38
3-39
3-40
3-41
3-42
3-43
3-44
3-45
3-46
3-47
3-48
3-49
Ref. No.
3-102
3-103
3-104
3-105
3-106
82-397-279-01
82-397-276-01
82-397-274-01
82-397-275-01
82-397-046-01
82-397-048-01
82-397-045-01
82-397-047-01
82-397-278-01
82-397-252-01
87-038-039-01
82-397-280-01
82-397-303-01
82-397-261-01
82-397-218-01
82-397-281-01
82-397-302-01
82-397-271-01
82-397-340-01
82-397-265-01
82-397-348-01
82-397-256-01
09-047-077-01
82-397-043-01
82-397-312-01
82-397-225-01
82-397-339-01
82-397-056-01
82-397-052-01
82-397-044-01
82-397-313-01
82-397-053-01
82-397-036-01
82-397-040-01
82-397-055-01
82-397-042-01
87-329-036-01
82-397-264-01
82-397-325-01
82-397-314-01
82-397-228-01
82-379-617-01
82-397-247-01
87-081-483-01
87-087-029-01
82-397-211-01
82-397-647-01
82-272-424-01
82-397-270-01
82-397-301-01
Part No.
87-253-036-01
87-253-071-01
87-253-072-01
87-257-073-01
87-253-093-01
87-233-074-01
U+2-8
U+26-4
U+2.6-5
U + 2.6-6(Black)
U+3-5
Q+2.6-8
O'ty
Description
MODEL AD-6550EE,UK
Coliar, Push key
Push-key lever, REW
Push-key lever, PLAY
Push-key lever, STOP
Push-key lever, FF
Push-key, STOP
Push-key, PLAY
Push-key, REC
Shaft, Push-key
Holder, Push-key
Wire binder
Lock plate, Cassette lid
Spring E, Oil drum
Lock lever ass’y
Frame chassis L ass'y
Flange collar, Cassette lid
Spring C, Oil drum
Idler lever ass’y, Oil
Drum B ass’y, Oil
Drum ass’y, Oil
Spring, Cassette lid arm
Cassette lid lever L ass’y
Cassette lid ass’y
Cassette case L
G cushion, Cassette case
Cassette case ass’y
G cushion
Cassette tid
Bushing, Cassette tid
Blinder
G cushion, Blinder
G cushion, Cassette window
Cassette window
Special screw, 4mm@ x 13mm
Cushion, Cassette lid
Cassette case R
QT: + 2-8 (Black)
Cassette lid lever R ass'y
Rubber bett C
Rubber beit A
Relay pulley
Ring magnet
Shaft ass’y, Relay
Motor screw
Rubber cushion
Frame chassis R ass’y
Holder, Motor circuit board
Brake spring
Shaft, Stopper C
Spring, Lock lever
3-108
3-109
3-110
3-111
3-112
AD-1800
*
teense [ow
87-081-481-01
87-480-072-01
87-410-318-01
87-081-489-01
87-081-499-01
87-441-006-01
VTT + 3-5
VS + 2.6-5
W3-13-0.8
PW4-8-0.25
STE-2.3
PW1.7-3.5-0.25
Bea Be YONNeB Be eBeNBABPeBeP Bee A WWANN
BPFENONHAHNWH NH NANN
Peo ow a WW A Ba eo ow

MODEL
AD-6550EE,UK
AIWA
EXPLODED
VIEW—4

WA
Ref. No.
4-1
4-2
45
: 4-6
4-7
4-8
4-9
4-10
4-11
4-12
4-13
4-14
4-15
4-16
4-17
4-18
4-19
4-20
4-21
4-22
4-23
4-24
4-25
4-26
4-27
4-28
4-29
4-30
4-31
4-32
4-33
4-34
4-35
4-36
4-37
4-38
4-39
4-40
441
4-42
4-43
4-44
4-45
4-46
447
4-48
4-49
4-50
4-102
4-103
4-104
4-105
4-106
4-107
4-108
Part No.
82-392-202-01
82-397-320-01
82-397-299-01
82-397-323-01
82-397-321-01
82-397-322-01
82-215-341-01
82-392-317-01
82-397-289-01
82-397-349-01
82-397-297-01
82-397-286-01
82-392-342-01
82-397-291-01
82-392-218-01
82-392-318-01
82-392-343-01
82-392-357-01
82-392-347-01
82-392-354-01
82-357-487-01
82-439-373-01
82-392-350-01
82-392-340-01
82-392-359-01
82-392-360-01
82-397-326-01
82-392-283-01
82-392-352-01
82-397-041-01
82-397-345-01
82-397-290-01
82-397-039-01
82-397-064-01
82-397-287-01
82-397-298-01
82-392-363-01
82-392-334-01
82-392-316-01
82-392-367-01
82-397-233-01
82-392-375-01
82-392-374-01
82-392-280-01
82-392-333-01
82-392-335-01
82-392-213-01
82-392-211-01
82-372-931-01
82-397-288-01
Part No.
Changed to
87-253-034-01
87-263-071-01
87-253-031-01
87-253-032-01
87-351-074-01
87-341-036-01
87-081-501-01
87-081-480-01
V+2-5
V+2.6-4
U+2-2
U+2-3
UT: + 26-8
UT1 +2-8
VTT + 2.6-4
VTT + 2.6-5
NWN WN PW
Description
Outsert chassis ass‘y
Stopper, Actuating chassis
Spring, Stopper
Flange collar B
Lever, Actuating
Flange collar A
Stee! ball, 3/32
Spring, Actuating chassis B
Stopper B, Push-key shaft
G cushion, Cassette plate
Spring, Cassette holder
Lever, Cassette holder
Return spring
Shield plate, Head
Actuating chassis ass’y
Roller, Actuating chassis
Spring, Actuating chassis
Spring, Erasing head
Spring, Rec/pb head
G cushion, Head
Binder, Lead wire
Shaft, Rec/pb adjusting
Felt, Back tension
Spring, Back tension
Lever, Back tension C
Lever, Back tension D
Supply reel platform ass’y
Take-up reel platform ass’y
Cap, Take-up reel platform
Guide, Light
Blinder, Light
Adhesive sheet, Ring
Ring, Reel platform
Cassétte plate
Lever, Record-blocking
Spring, Record-blocking lever
Pinch roller ass’y
Spring, Pinch lever
Spring, Actuating chassis A
Plate, PSP
Auxiliary plate, pause
Spring, Pause B
Spring, Pause A
Pause slide plate ass’y
Spring, Take-up
Spring, Lock plate
Lock plate
Shaft, Lock plate
Label, Head
Lever, CrO, selecting
Ref. No.
4-110
4-111
4-112
4-113
4-114
4-115
4-116
11
Part No.
Common
Model
TPR-300
AD-1500
87-081-503-01
87-410-303-01
87-410-311-01
87-410-317-01
87-081-023-01
87-081-319-01
87-441-005-01
87-441-005-01
VTT + 2.6-8
W2-4.3-0.23
W2.6-7.5-0.5
W3-10-0.8
FW2.6-7.5-0.5
TW2.3-8-0.2
STE-2
STE-2.3
MODEL AD-6550EE,UK
PP wo ene meno nnn nn ON Bee eens oe nhN Psa nee WeHBHNHPAHBN AN WH BB Baa
We WNHNAN A=

MODEL AD-6550EE,UK AIWA
EXPLODED VIEW-—5

MWA
Part No. Common
MODEL AD-6550EE,UK
Ref. No. Part No. a Changed to Description Model Q'ty
5-1 82-392-302-01 REV. auxiliary lever ass‘y : 1
5-2 82-392-331-01 Spring, REV. auxiliary lever * 1
5-3 82-392-235-01 Push-switch proper ass’y * 1
5-4 82-392-262-01 Take-up idler ass‘y 7 1
5-5 82-392-361-01 Lever, Main drive B 1
. 5-6 82-392-346-01 Spring, FF . 1
5-7 82-392-313-01 Slide plate, FR * 1
5-8 82-392-256-01 Shaft bearing ass’y 7 1
5-9 82-392-313-01 Belt, Main is 1
5-10 82-392-371-01 Flywheel ass’y id 1
5-11 82-331-107-01 Screw for thrust 1
5-12 82-392-321-01 Plate, Flywheel * 1
5-13 82-397-240-01 Lever, MT switch - 1
5-14 82-397-236-01 MT switch holder ass’y * 1
5-15 82-374-248-01 Switch holder C 1
5-16 82-397-242-01 Slider, MT switch i 1
5-17 82-372-417-01 Spring B, MT switch slider AD-1500 1
5-18 82-397-308-01 Holder, Memory switch x 1
5-19 82-397-269-01 Holder, Halt : 1
5-20 82-392-337-01 Spring, Center shifter = 1
5-21 82-397-283-01 Eject lever B % 1
5-22 82-397-300-01 Spring, Eject lever * 1
5-23 82-397-307-01 G cushion, Eject lever 7 1
5-24 82-397-253-01 Eject iever A ass’y : 1
5-25 82-392-332-01 Spring, Brake £ 1
5-26 82-439-260-01 Brake shoe TPR-300 2
5-27 82-392-320-01 Slide plate, Brake * 1
5-28 82-397-336-01 Ring magnet A ass’y * 1
5-29 82-392-353-01 Collar, Rewind shaft * 1
5-30 82-392-326-01 Slide plate, REW = 1
5-31 82-392-323-01 Slide plate, Brake S * 1
5-32 82-397-285-01 Slide plate, Eject i 1
5-33 82-392-330-01 Spring, FR lever * 1
5-34 82-392-295-01 FR lever ass’y * 1
5-35 82-392-315-01 Gear, REW * 1
5-36 82-392-305-01 FF pulley ass’y i 1
5-37 82-397-282-01 Slide plate, REC 1
5-38 82-392-345-01 Spring, REC fock * 1
§-39 82-392-274-01 REC tock iever ass‘y * 1
5-40 82-397-284-01 Eject lever C * 1
5-41 82-392-373-01 G cushion, FR * 1
5-42
82-397-346-01
Holder,
CrO,
switch
*
1
5-43
82-397-347-01
Lever,
CrO,
1
5-44 82-397-350-01
T spring, Cro,
Ref. No. Part No. Description O'ty Ref. No. Part No. Description O'ty
5-101
87-253-072-01
|
V+
2.6-5
2
5-112
87-810-311-01
|
W2.6-7.5-0.5
1
4
- 5-102 87-253-093-11 | V + 3-5 2 5-113 87-410-312-01 | W3-6-0.3 1
5-103
87-253-036-01
|
U+
2-8
6
5-114
87-410-317-01
|
W3-10-0.8
5
5-104 87-351-074-01 | VT, + 2.6-8 7 5-115 87-081-489-01 | PW1.7-3.5-0.25 3
:
5-105
87-351-075-01
|
VT,
+
2.6-10
2
5-116
82-416-358-01
|
PW2.5-6
1
5-106
87-341-034-01
|
UT,
+
2-5
2
5-117
87-081-197-01
|
FW2.6-8-1.0
2
5-107
87-341-037-01
|
UT,
+
2-10
2
5-118
87-081-319-01
|
TW2.3-8-0.2
1
5-108
87-341-095-01
|
UT,
+3-8
2
5-119
87-081-098-01
|
NW2.6-7-0.3
1
5-109
87-480-072-01
|
VS
+
2.6-5
3
5-120
87-374-035-01
|
SS2-6
1
5-110
87-081-480-01
|
VTT
+
2.6-5
5
5-121
87-441-006-01
|
STE-2.3
5
5-111 87-081-523-01 | QTT + 2.6-8 1 5-122 | 87-442-005-01 | STP-5 1
13

MODEL AD-6550EE,UK
HARDWARE NOMENCLATURE
V: Pan head screw
U: Binding head screw
Q: Flat countersunk
head screw
VTi: Pan head
tapping screw
UT: Binding head
tapping screw
QT1: Flat countersunk
head tapping screw
QTT: Flat countersunk head
tap-tight screw
VTT: Pan head
tap-tight screw
UT2: Binding head
tapping screw
VS: Pan head screw
with spring washer
ACCESSORIES/PACKAGE
Ref. No.
Part No.
OCOOMNO AA WHA
82-397-855-01
82-397-856-01
82-397-857-01
86-056-500-01
87-051-146-01
87-051-175-01
87-051-131-01
87-058-024-01
86-925-002-01
87-058-023-01
82-397-859-01
82-397-903-01
82-397-904-01
87-056-009-01
80-29 1-645-01
Part No.
Changed to
© (hoon STE: Ering
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FW: — Fiber washer
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© (mm
Description
Printed indiv., Packing
Cushion L, Printed indiv,
Cushion R, Printed indiv.
Curl stopper
Poly-viny! sack (for case)
Poly-tube A (for instruction)
Poly-vinyl sack (for AC cord)
Head cleaning pole
Connection cord, CW-115K
Cord binder
Pad, Cassette window
Instructions booklet (EE model only)
Instructions booklet (UK model only)
Distributors list
Tape cassette, DMC-130A
14
Powerful stop ring
Nylon washer
Poly-slider washer
: Crown washer
AIWA
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| L_—tength in mm
Diameter in mm
Type of Slot
Type of Head
Length in mm
Diameter in mm
Type of Slot
Type of Head
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NOTES:
1) — B(+) power supply
2) = Signal path
»> Rec. path
3) The voltage is the reference value measured with a tester
(20 k-ohms/V DC) when there are no signals.
An asterisk (*) indicates that the value was measured
with a vacuum-tube voltmeter during recording.
4) Resistors with no designation have a rated power of
%W and a tolerance of +5%.
5) Capacitors with no designation have a dielectric strength
of less than 50WV.
6) Ceramic capacitor symbols:
Q, t For temperature compensation (SL)
dh High dielectric constant system (YY)
+ High dielectric constant system (YP, YZ)
7) The only capacitor tolerances indicated are +2% (G),
+5% (J) and +10% (K).
8) Explanation of symbols
() Mylar capacitor
8 Styrol capacitor
Tantalum capacitor
ay Low-leakage capacitor
Polypropylene film capacitor
Low-noise resistor
9) Switches are set to the following positions
S1—1~10 REC/PB (PB)
S2—-1~2 INPUT SELECTOR (LINE)
S3—-1~6 DOLBY NR (OFF)
S4—-1~4 TAPE SELECTOR-—BIAS (LH)
S5-1~4 TAPE SELECTOR—EQ (LH)
S6-1~6 METER (VU)
S7-1~6 PLAY MUTING (STOP)
S8—-1~2 MEMORY (OFF)
sg PAUSE (OFF)
$10 COUNTER (OFF)
$11 REWIND (OFF)
$12 CUE/REVIEW MUTING (OFF)
$13 MOTOR (OFF)
$14 BIAS MUTING (STOP).
$15 POWER (OFF)
S16 VOLTAGE SELECTOR
$17 DIN OUT (FIX)
$18 DIN FRONT/REAR (REAR)
$19 Cro, AUTO (OFF)
* This schematic diagram is subject to change without
notice in the interests of improved performance.
ecs { €ce Ec \
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2sc945 2SB605 280571 2SC 168)
28C1222
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seiemminem Asie mms semana ete me te aa ih TURES SE RIE RSTO ANE TERRAIN LESAN AN AMOROUS AEPRESN A IIIA ICU EI ES ART SMLE

ELECTRICAL MAIN PARTS
Description
< POWER CIRCUIT BOARD SECTION >
PCB-A
82-397-610-11
< POWER SECTION >
Q1,2,3
D1
D2
D3,4,5
R1,8
R2
89-313-647-01
87-027-163-01
87-027-212-01
87-027-083-01
87-029-016-01
87-029-027-01
< BIAS OSC SECTION >
CP1
L151,152
_ 7T0151,152
82-372-658-01
82-371-644-01
87-01 1-079-01
< AUTO STOP SECTION >
Q51
Q52,53,54
D51
052,53
D54,55,56,59
057
89-206-052-01
89-309-455-71
87-027-083-01
88-052-188-01
87-027-097-01
87-026-069-01
< TIMER START SECTION >
Q101
89-405-712-01
Q102,103,104,) 89-309-455-71
105
D101
D102
87-027-083-01
87-027-097-01
Power circuit board
Transistor, 25C 1364 (7)
Bridge diode, 1B4B1
Zener diode, RD24EC
Diode, 181885
< Resistors >
222 1/2W Fuse resistor
4702 1/2W Fuse resistor
Bias OSC unit
Bias OSC coil, 22mH
Trimmer, 30pF
Transistor, 25B605 (L)
Transistor, 2SC945L (K, P, Q)
Diode, 181885
Diode, 18188 (FM)
Diode, 181555
Zener diode, WZ-052
Transistor, 2SD571 (L)
Transistor, 2SC945L (K, P, Q)
Diode, 151885
Diode, 151555
<MAIN CIRCUIT BOARD SECTION >
PCB-B
82-397-652-01
< REC/PB SECTION >
Q1,2
Q3,4
Q5,6,7,8,9,10,
11,12
Q13,14
D1,2
D3,4,5,6,7,8
T1,2
$1
$2,3,6,8
SFR1,2,3,4
SFR5,6
R27,28
C7,8,17,18
C21,22
C15,16
C23,24
< PEAK INDICATOR SECTION
89-316-816-01
89-312-222-01
89-309-456-71
89-313-647-01
87-027-122-01
88-05 1-060-01
82-370-610-01
87-031-390-01
82-397-641-01
87-021-498-01
87-021-493-01
82-380-664-01
87-015-246-01
87-015-261-01
87-015-200-01
82-380-661-01
Main circuit board
Transistor, 2SC 1681 (BL)
Transistor, 25C1222 (E)
Transistor, 2SC945L (K, P)
Transistor, 2SC1364 (7)
Zener diode, 02Z6.2A
Diode, 1N60 (FM)
Matching transformer
Slide switch (REC/PB)
Push switch ass’y (A)
(INPUT SELECTOR,
DOLBY-NR METER,
MEMORY)
Semi-fixed resistor, 47kQ-B
Semi-fixed resistor, 1kQ-B
< Resistor >
31.6k2 1/4W +5%
< Capacitors >
4.7F 25V LL
0.33uF 35V Tantalum
10yuF 16V Tantalum
0.0039nF PP
>
< MUTING SECTION >
Q151,152,153, | 89-402-275-01
154
Q155
D151
D152
89-309-456-71
87-026-066-01
88-052-188-01
Description
Transistor, 2SD227 (V)
Transistor, 2SC945L (KP)
Diode, M8513A (O)
Diode, 18188 (FM)
“<< REMAINING TAPE INDICATOR SECTION >
1C201
Q201
D201,203,204
D202
D205
SFR201
SFR202
R212
C202
C204
87-027-214-01
89-309-455-01
87-027-097-01
87-027-213-01
87-027-211-01
87-021-496-01
87-021-495-01
87-029-020-01
87-015-242-01
87-019-080-01
IC, uPC 1458
Transistor, 2SC945L (Q)
Diode, 181555
Zener diode, 052100
Zener diode, RD3.9EC
Semi-fixed resistor, 10k2-B
Semi-fixed resistor, 4.7kQ-B
< Resistor >
1802 1/2W Fuse resistor
< Capacitors >
2.2uF 50V) LL
uF = 35V) Tantalum
< DOLBY CIRCUIT BOARD SECTION >
PcB-C,D
1C1
D1
LPF1
R2
C1
C6
c2
c7
82-385-650-11
87-027-151-01
88-051-060-01
82-397-634-01
87-032-640-01
82-371-652-01
87-015-328-01
87-371-643-01
82-371-642-01
82-371-641-01
Dolby circuit board
IC, NE545B
Diode, 1N60 (FM)
Low pass filter (MPX UNIT)
Pin, 10p
< Resistor >
3.3k2 +1%
< Capacitors >
0.22uF 50V LL
4700pF PP
5600pF PP
0.027uF PP
< BIAS/EQ SWITCH CIRCUIT BOARD SECTION >
PCB-E
Qi~9
D1
L1,2
L3,4,5,6
VR3,4
$4.5
SFR1,2,3,4,
5,6
82-397-653-01
89-309-455-61
87-026-066-01
82-385-636-01
82-385-634-01
82-397-636-01
87-031-388-01
87-021-498-01
Bias/EQ switch circuit board
Transistor, 2SC 945 (K, P)
Diode, M8513A (O)
Coil, 6.8mH
Coil, 4.7mH
Volume, 10k92-A
(OUT PUT LEVEL)
Lever switch (BIAS, EQ)
Semi-fixed resistor, 47k2-B
<MIC/PHONE JACK CIRCUIT BOARD SECTION >
PCB-F
J1,2,3
82-397-605-01
82-397-639-01
MIC/PHONE JACK
circuit board
Jack ass’'y (MIC, PHONES)
< LINE JACK CIRCUIT BOARD SECTION >
PCB-G
J5,6,7,8
82-397-662-01
82-399-609-01
LINE JACK circuit board
JACK ass'y (LINE IN,
LINE OUT)
< REC VOLUME CIRCUIT BOARD SECTION >
PCB-H
VR1,2
82-397-607-01
82-385-640-01
REC volume circuit board
Volume, 50k2-A
Description
< DME CIRCUIT BOARD SECTION >
PCB-J 82-397-625-01
DME1 82-397-642-01
DME circuit board
DM-101
< HALL IC CIRCUIT BOARD SECTION >
PCB-K
1C1
82-397-623-01
87-027-160-01
Hall IC circuit board
Hall IC, DN835
< DIN CIRCUIT BOARD SECTION >
PCB-L 82-397-654-01
J4 82-380-616-01
$18 82-380-610-01
DIN circuit board
DIN socket (DIN)
DIN switch (FRONT/REAR)
< LAMP CIRCUIT BOARD SECTION >
PCB-M
PL1,2
82-397-622-01
82-380-705-01
Lamp circuit board
Lamp 8V 55mA
(DOLBY-NR, RECORD)
< LED CIRCUIT BOARD SECTION >
PCB-N 82-397-624-01
D1 87-026-086-01
D2 87-026-083-01
LED circuit board
Light emitting diode (ORG)
Light emitting diode (RED)
<PLAY MUTING CIRCUIT BOARD SECTION >
PCB-O 82-397-609-01
$7 87-031-239-01
Play muting circuit board
Slide switch (PLAY MUTING)
< FUSE CIRCUIT BOARD SECTION > = UK model only
PCB-P 82-397-650-01
F1 87-035-131-01
87-098-006-01
F2 87-035-183-01
87-098-003-01
87-032-744-01
$16 87-031-343-01
< MISCELLANEOUS >
v1 82-397-629-01
T1 82-397-630-01
RPH 82-372-676-01
EH 87-046-088-11
LEVEL DIAGRAM
e@ Playback
f =400Hz 0dB=1V
Fuse circuit board
Fuse, 100mA “T"”
Fuse label, 100mA “T”
Fuse, 50mA “T”
Fuse label, 50mA “T”
Fuse clamp
Slide switch
(VOLTAGE SELECTOR)
Power transformer
(EE model only)
Power transformer
(UK model only)
Rec/Pb head
Erase head
Symbol No.
Part No.
Description
M, PCB-Q
PL1
SOL1,2
LM1
LM2
JQ |
$9,11,12,13
$14
S15
S16
$17
$19
Fi
F2,3,4
F3,4,5
F5
F6
r
NF 20dBj—
2 —22dB(79mv)
4 —7.7¢4B
(411mv)
> —2.2dB(775mV )
6 —18.4dB(120mv)
82-397-643-01
82-397-646-01
82-397-633-01
82-397-644-01
82-397-645-01
87-032-849-01
87-031-362-01
87-031-363-01
87-031-382-01
87-031-364-01
82-467-671-01
87-031-377-01
87-035-067-01
87-098-006-01
87-035-144-01
87-035-145-01
87-098-010-01
87-035-075-01
87-098-013-01
87-035-134-01
87-098-013-01
82-397-660-01
82-397-661-01
-~® —32dB
(25mv)
} —75dB
(0.18mV)
@ @5
Motor ass’y
Pilot lamp 8V 50mA
(CASSETTE)
Solenoid (AUTO STOP,
TIMER START)
Level meter A
(LEFT LEVEL)
Level meter B
(RIGHT LEVEL)
Jack 2.5@ (PLAYER SYNC)
Micro switch (PAUSE,
REWIND CUE/REVIEW,
MUTING, MOTOR)
Micro switch
(BIAS MUTING)
Push switch (POWER)
Slide switch (VOLTAGE
SELECTOR)
(EE model only)
Slide switch (DIN OUT)
Micro switch (CrO, AUTO)
Fuse, 100mA “‘T”
(EE model only)
Fuse label, 100mA “T”’
(EE model only)
Fuse, 250mA “T"’
(EE model only)
Fuse, 250mA “T"
(UK model only)
Fuse label, 250mA “T"’
Fuse, 500mA “T"’
(EE model only)
Fuse label, 5|00mA “T"’
(EE model only)
Fuse, 500mA “T"’
(UK model only)
Fuse label, 500mA “‘T”’
(UK model only)
Fuse holder, 4P
{UK model only)
Fuse holder, 5P
(EE model only)
e@ Recording
IC BLOCK DI
Hall Cell
IC BLOCK DIA‘
AC 120/240V
50/60Hz
=P
St CoC oi RN oe
LINE
Za
© —70c$ B(0.3mV)
;®
LING
re 01 03
Q101,103 89-309-455-61 | Transistor, 2SC945L (P, Q)
Q102,104
89-309-456-71
|
Transistor,
2SC945L
(K,
P)
ek
as
i
D101,102
88-051-060-01
|
Diode,
1N6O
(FM)
<LH
BIAS
VOLUME
CIRCUIT
BOARD
SECTION
>
©
fee
ic
I]
SFR101
87-021-497-01
|
Semi-fixed
resistor,
22k2-B
PCB-I
82-397-608-01
|
LH
Bias
volume
circuit
board
|
48
’
VRS 82-397-637-01 | Volume, 1k-B (LH BIAS Fog [PHONES] DIN Jack
FINE) 2 ”

Symbol No.
<MUTING SECTION >
Q151,152,153, | 89-402-275-01
154
Q155 89-309-456-71
D151 87-026-066-01
D152 88-052-188-01
Description
Transistor, 28D227 (V)
Transistor, 2SC945L (KP)
Diode, M8513A (QO)
Diode, 18188 (FM)
< REMAINING TAPE INDICATOR SECTION >
1€201 87-027-214-01
Q201 89-309-455-01
D201,203,204 | 87-027-097-01
D202 87-027-213-01
D205 87-027-211-01
SFR201 87-021-496-01
SFR202 87-021-495-01
R212 87-029-020-01
C202 87-015-242-01
C204 87-019-080-01
IC, uPC 1458
Transistor, 2SC945L (Q)
Diode, 1S1555
Zener diode, 052100
Zener diode, RD3.9EC
Semi-fixed resistor, 10k2-B
Semi-fixed resistor, 4.7kQ-B
< Resistor >
1802 1/2W Fuse resistor
< Capacitors >
2.2uF 50V) LL
uF = 35V— Tantalum
<DOLBY CIRCUIT BOARD SECTION >
PCB-C,D 82-385-650-11
1C1 87-027-151-01
01 88-051-060-01
LPF1 82-397-634-01
87-032-640-01
R2 82-371-652-01
Ci 87-015-328-01
C6 87-371-643-01
c2 82-371-642-01
c7 82-371-641-01
Dolby circuit board
IC, NE545B
Diode, 1N60 (FM)
Low pass filter (MPX UNIT)
Pin, 10p
< Resistor >
3.3k2. +1%
< Capacitors >
0.22uF 50V LL
4700pF PP
5600pF PP
0.027uF PP
<BIAS/EO SWITCH CIRCUIT BOARD SECTION >
PCB-E 82-397-653-01
ai~9 89-309-455-61
D1 87-026-066-01
L1,2 82-385-636-01
13,4,5,6 82-385-634-01
VR3,4 82-397-636-01
$4,5 87-031-388-01
SFR1,2,3,4, | 87-021-498-01
5,6
Bias/EQ switch circuit board
Transistor, 2SC 945 (K, P)
Diode, M8513A (O)
Coil, 6.8mH
Coil, 4.7mH
Volume, 10k2-A
(OUT PUT LEVEL)
Lever switch (BIAS, EQ)
Semi-fixed resistor, 47k2-B
<MIC/PHONE JACK CIRCUIT BOARD SECTION >
PCB-F 82-397-605-01
J1,2,3 82-397-639-01
MIC/PHONE JACK
circuit board
Jack ass‘y (MIC, PHONES)
<LINE JACK CIRCUIT BOARD SECTION >
PCB-G
J5,6,7,8
82-397-662-01
82-399-609-01
LINE JACK circuit board
JACK ass’y (LINE IN,
LINE OUT)
<REC VOLUME CIRCUIT BOARD SECTION >
PCB-H
VR1,2
82-397-607-01
82-385-640-01
REC volume circuit board
Volume, 50k2-A
(REC LEVEL)
<LH BIAS VOLUME CIRCUIT BOARD SECTION >
PCB-I 82-397-608-01
VRS 82-397-637-01
LH Bias volume circuit board
Volume, 1k2-B (LH BIAS
FINE)
Symbol No. Part No.
Description
< DME CIRCUIT BOARD SECTION >
DME circuit board
DM-101
Hall IC circuit board
PCB-J 82-397-625-01
DME1 82-397-642-01
< HALL IC CIRCUIT BOARD SECTION >
PCB-K 82-397-623-01
1C1 87-027-160-01
Hall IC, ON835
<DIN CIRCUIT BOARD SECTION >
DIN circuit board
DIN socket (DIN)
DIN switch (FRONT/REAR)
Lamp circuit board
PCB-L 82-397-654-01
J4 82-380-616-01
$18 82-380-610-01
< LAMP CIRCUIT BOARD SECTION >
PCB-M 82-397-622-01
PL1,2 82-380-705-01
Lamp 8V 55mA
(DOLBY-NR, RECORD)
< LED CIRCUIT BOARD SECTION >
PCB-N 82-397-624-01
D1 87-026-086-01
D2 87-026-083-01
LED circuit board
Light emitting diode (ORG)
Light emitting diode (RED)
<PLAY MUTING CIRCUIT BOARD SECTION >
PCB-O 82-397-609-01
$7 87-031-239-01
Play muting circuit board
Slide switch (PLAY MUTING)
< FUSE CIRCUIT BOARD SECTION > = UK model only
PCB-P 82-397-650-01
F1 87-035-131-01
87-098-006-01
F2 87-035-183-01
87-098-003-01
87-032-744-01
$16 87-031-343-01
< MISCELLANEOUS >
T1 82-397-629-01
TI 82-397-630-01
RPH 82-372-676-01
EH 87-046-088-11
LEVEL DIAGRAM
@ Playback
Fuse circuit board
Fuse, 100mA “T"
Fuse label, 100mA “T”’
Fuse, 50mA “T”
Fuse label, 50mA “T"”’
Fuse clamp
Slide switch
(VOLTAGE SELECTOR)
Power transformer
(EE model only)
Power transformer
(UK mode! only)
Rec/Pb head
Erase head
2 —22dB(79mvV)
Symbol No.
Part No.
Description
M, PCB-Q
PL1
SOL1,2
LM1
LM2
J9
$9,11,12,13
$14
S15
S16
$17
$19
F1
F2,3,4
F3,4,5
FS
F6
82-397-643-01
82-397-646-01
82-397-633-01
82-397-644-01
82-397-645-01
87-032-849-01
87-031-362-01
87-031-363-01
87-031-382-01
87-031-364-01
82-467-671-01
87-031-377-01
87-035-067-01
87-098-006-01
87-035-144-01
87-035-145-01
87-098-010-01
87-035-075-01
87-098-013-01
87-035-134-01
87-098-013-01
82-397-660-01
82-397-661-01
5 —2.2dB(775mV)
-30 6 =18.4dB(120mVv)
-40 ~324B
-50 (25mv)
-60
-70
-80 | =75dB
(0.18mv)
2
© Q3 { @& @ as ©
RPH. | ot { ul ©)
+8
2
Motor ass’y
Pilot lamp 8V 50mA
(CASSETTE)
Solenoid (AUTO STOP,
TIMER START)
Level meter A
(LEFT LEVEL)
Level meter B
(RIGHT LEVEL)
Jack 2.5@ (PLAYER SYNC)
Micro switch (PAUSE,
REWIND CUE/REVIEW,
MUTING, MOTOR)
Micro switch
(BIAS MUTING)
Push switch (POWER)
Slide switch (VOLTAGE
SELECTOR)
(EE model only)
Slide switch (DIN OUT)
Micro switch (CrO, AUTO)
Fuse, 100mA “T”
(EE model only)
Fuse label, 100mA ‘‘T”’
(EE model only)
Fuse, 250mA “T”’
(EE model only)
Fuse, 250mA “T”’
(UK model only)
Fuse label, 250mA ‘'T”’
Fuse, 500mA “T”
(EE model only)
Fuse label, 500mA ‘‘T"’
(EE model only)
Fuse, 500mA “‘T”’
(UK model only)
Fuse label, 500mA “‘T”
(UK model only)
Fuse holder, 4P
(UK model only)
Fuse holder, 5P
(EE model only)
e@ Recording
=400Hz 0dB=1V
IC BLOCK DIAGRAM DN835
i Veg
2; Q, Output
3) Q, Output
|
4) GND
Hall Cell
Amplifier Output Stage
IC BLOCK DIAGRAM NE545B
'
PIWER C.8
aR €
as
E
a2
RED a3
SIé
, 1‘
, # ] ; ° P |
i
AC 120/240V
50/60Hz
(VOLTAGE SELECTOR)
ae
of
2 2 eR
a a
"UK" MODEL
‘ ceneeraemcnceternmimcmmnes
(6: —2.2dB(775mV )__
CrO2—2ck( BOOmv )
Fe-Cr—6id B(470mv )
S| LH-6a8100m")
CrO2—17dB(140mV) —-—18.4dB(120mV)
4 Fe-Cr—22.5dB(75mV )
LH—21dB (90mV)
73; —324B
(25mV)
DIN JACK
SFR 1.3.5.
REC.
car?