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YTES-
17 $1-1$1-9:
Record/playback switch (shown in playback position).
2 $2-1~S2-4:
Input select switch (shown in line in position).
s3
: Dolby NR switch (shown in OFF position).
54-1,54-2 : CrO, tape select switch (shown in OFF position).
55-1,55-2
: Normal tape select switch (shown in OFF position).
56
: FF/CUE/REW/REV switch (shown іп OFF position).
Ё 57
: Power ON/OFF switch (shown in OFF position).
58
: Dolby В * С NR selector (shown in Dolby B position).
VR1,2
: Playback gain adjustment VR.
VR3
: Balance control.
VR4
: Input level control.
VR5,6
: Overall gain adjustment VR.
VR7,8
: Bias current adjustment VR.
VR9,10
: FL meter adjustment VR.
L1,2
: Bias trap coil.
3 6 .
13,4
: MPX filter.
. L7
: Bias oscillation coil.
Resistance are in ohms (Q), 1/4 watt unless specified otherwise.
1K=1,000(Q),
1M = 1,000k(9).
Capacity are in micro-farads (uF) unless specified otherwise.
All voltage values shown in circuitry are under no signal condition and
playback mode with volume control at minimum position otherwise
specified.
Voltage values at record mode.
.-Voltage values at CrO, tape mode.
..Voltage values at Metal tape mode
.. Voltage values at Stop mode.
For measurement use-VTVM.
+В ) indicates B + (bias).
В ) indicates В- (bias).
) indicates the flow of the playback signal. (NR out).
(ae)
indicates the flow of the recording signal. (NR out).
Тһе part No. of transistors, ІС and diodes mentioned in the schematic
diagram stand for production part No. Regarding the part No. with о mark,
the production part No. are different from the replacement part No.
Therefore, when placing an order for replacement part, please use the part
No. in the replacement part list.
QUIVALENT CIRCUIT
201, 202: BA6146
Voltage value at which the noise reduction switch is turned on.
ж Input level control ...MAX
* Balance control...... Center
Overall distortion
* Test tape
..QZZCRA for Normal
...QZZCRX for CrO,
..QZZCRZ for Metal
Overall S/N ratio
ж Test tape... QZZCRA
Less than 3.5%
CrO2, Metal......
Less than 4%
Greater than 43dB
(without NAB filter)
B ELECTRICAL PARTS LIST
NOTES:
RESISTORS
CAPACI
Carbon
...Metal-oxide
...Metal-oxide
...Metal-film
Metal-film
REPLACEMENT PARTS LIST
Important safety notice
Components
identified
by A mark
have
special
characteristics important for safety
Fuse type metallic
When
replacing any of these components,
use
mw
OOO
only manufacturer's specified parts
ERF ы
Cement
ee mee CE
SC
тшш —
RESISTORS
ERD25FJ100
C 9, 10
ECQM1H103JZ
À A 87
ERD25FJ562
C 11, 12
ECEA1CU100
В 423, 424
ERD25FJ392
С 407, 408
ECQM1H473JZ
R 67, 68
ERD25FJ102
R 425
ERD25FJ103
С 409, 410
ECQM1H224JZ
А Te n
ЕМЕН
В 426
ERD25TJ563
С 411,412
ECEA50ZR68
В 73
ERD25FJ103
R 427
ERD25TJ223
С 413, 414
ECQM1H 103JZ
R74
ERD25F J472
R 428
ERD25FJ103
C 415, 416
ECQM1H472JZ
R75
ERD25TJ104
R 429
ERD25TJ223
C 417, 418
ECEA1CU100
R 76, 77
ERD25FJ103
C 419, 420.
ECQM1H473JZ
CAPACITORS
С 421, 422
ECQM1H224JZ
5 n 80
Бетіне
С 423, 424
ЕСЕА502868
R 81
ERD25FJ150
C12
ECKD1H821KB | С 425, 426, 427, 428
R 82
ERD25FJ392
C 3,4
ECEA1EU4R7
ECEA1CU100
R 83
ERD25FJ150
C5,6
ECEAOJU101
С 429, 430
ECEA1EU4R7
R 84
ERD25FJ1R0
C:7,8
ECCD1H181K
| С 431, 432
ECQM1H224JZ
TERMINATIONS
1
ІС1, 3,4
. ^ Cathode
Anode
сыпев
е
p. d
Cathode
Сао----<А
Сао----А
D4
D8~11
Marking
#7;
55
456
ЕСВА
ECG
ECKG
ECCG
ЕСЕП
ЕСОМ
Ref. No
INTEGR
R3,4
ERD25FJ101
R 88
ERD25FJ100
С 13, 14
ECKD1H681KB
ІСІ
R5,6
ERD25TJ473
R 89
ERD25FJ471
C 31, 32
ECEA1HU010
163,4
R7,8
ERD25FJ820
R 90
ERD25FJ271
C 37,38
ECQMIHEBZ
|1656
R 9, 10
ERD25TJ334
R91
ERD25FJ390
C39,40
ECQMIH332/Z
|16242
R11,12
ERD25FJ682
R92
ERD25FJ562
C41,42
ECEA1HU010
:
R 13, 14
ERD25FJ562
R 93
ERD25TJ333
C 43, 44
ECEA1AU471
TRANSI
В 15,16
ERD25TJ104
R 94,95 A ERD25FJ102
C 45
ECQP1183JZ
R 17, 18
ERD25FJ222
R 96
À ERD2FCJ4R7
C 46
ECEA1CU101
a 1,2
R19.20
ERD25TJ223
R 97
ERD25FJ820
|C47
ECFDD153KXY | 34
R21
ERD25FJ103
R 100
ERD25FJ182
C 48
ECFDD822KVY
Q 5 6.7
R 101, 102
C 50
ECEA1CU100
'
R22
ERD25FJ102
À ERDS1FJ100
С 51,52 А ECEA1AU221
Q 13
R 25, 26
ERD25F J102
R 203, 204, 205, 206
C 53, 54 A ECEA1CU222
Q 15
R 43, 44, 45, 46
ERD25FJ103
|С 56,58 — ECKDIH2237F | Q16
к
ERD25FJ222
R 209
ERD25FJ102
017
R 47, 48
ERD25FJ682
В 401, 402
ERD25FJ242
C 57, 58
ECKD2H121KB
Q 18, 19
R 49, 50
ERD25FJ272
R 403, 404
ERD25FJ562
С 59, 60
ECQM1H102JZ
Q 401
R 51, 52
ERD25FJ560
В 405, 406
ERD25FJ332
С 63, 64 А ECKD1H223ZF
В 53, 54
ERD25FJ181
R 407, 408
ERD25FJ102
С 201, 202
ECFDD563KXY
DIODES
R 55, 56
ERD25TJ223
R 409, 410
ERD25TJ333
С 203, 204
ECEA1CU100
В 57,58
ERD25FJ822
R 411,412
ERD25TJ823
C 205, 206
ECKD1H471KB
D 1
R 59, 60
ERD25F J8R2
R 413, 414
ERD25FJ821
C 301
ECEA1CU101
D2
4
R 415, 416
ERD25FJ512
C 302
ECKD1H103ZF
D3
R 417, 418
ERD25TJ683
C 401, 402
ECCD1H820K
d 2) = en
ee
R 419, 420 ERD25FJ222
|С 403, 404 ECQM1H472UZ
В :
ERD25FJ472
В 421,422
ERD25TJ823
С 405, 406
ЕСЕА1С1/100
D 8, 9, 10
VR 9, 10.
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