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RS-B105
Dolby NR circuit
1. Test equipment connection is shown in Fig 10.
2. Set a normal tape and apply 5kHz signal in record pause
mode.
3. Adjust by attenuator so that the output between terminal ©
(L-CH) {terminal @ (R-CH)} of 1C401 and ground is 12.3mvV.
4. Turn NR switch ON, and check that the level changes as
specified from the fevel in NR out mode.
Standard value:
8+ 1.5dB
m@ RESISTORS AND CAPACITORS
teristics Important for safety.
When replacing any of these
components, use only manufacturer's specified parts.
Numbering System of Resistor
Numbering System of a
Resistor Type
Wattage
Capacitor Type
Tolerance
:
ECEA Tin
rae |
: Carbon
at
: Metal Oxide
ERC
: Solid
: £0.25pF
: Electrotytic
3
: 5%
; Ceramic
:
6 .
: +10%
: Ceramic
H
:
: +80%, ~20%
: Polyester
'
:
: +20%
: Polyester
:
: Polyester
: Liquid electrolyte
double layer
capacitor
: Ceramic
wee.S.A.
Ail European areas except United Kingdom.
United Kingdom.
* [EGA] ...F.R. Germany.
R3,4
R $1, 52
ERDS2TJ222
22k
|R 405, 406
EROS2TJ473
47k | R 706, 707
ERDS2TJ154
150k
[EGA] only
ERDS2TJ332
3.3k
R 407, 408
EROS2TJ562
5.6k | R 708
ERDS2TJ152
1.5k
R17, 18
ERDS2TJ472
4.7% | R57, 58
EROS2TJ391
390
R 804
EROS2TJ683
68k
R 23, 24
EROS2TJ101
100 | R 63, 64
ERDS2TI154
150k
|R 418, 416
EROS2TJ184
180k | R815, 816
EROS2TJ103
10k
R 29, 30
EROS2TJ820
82
R419
ERDS2TJ512
§.1k
[EGA] only
ERDS2TI182
1.8% | R 604, 605
R901
ERDS2TJ391
390
R 33, 34
ERDS2TJ682
6.8k | R 200
EROS2TJ271
270
[EK] only A
ERQ14LKRS6
0.56 | R902
R 35, 36
EROS2TJ562
5.6k | R201
ERDS2TJ680
68 | A 606, 607
{EK] only
ERO2FCJ4R7
47
R 37, 38
ERDS2TJ102
1k
{EK] only
A ERQ14LK2R2
2.2
R 39, 40
ERDS2TS103
10k | R202
ERD2FCG270
27 | R 700
ERDS2TJ561
560
R 41, 42
EROS2TJ222
2.2k | R 300, 301
ERDS2TJ8R2
8.2 | R701
ERDS2TJ562
5.6k
R 43, 44
ERDS2TJ153
15k | R 302, 303
ERDS2TJ683
68k | A 702
ERDS2TJ472
47k
R 45, 46
ERDS2TJ273
27k
| R304
ERDS2TJ1RO
R 47, 48
ERDS2TJ682
6.8k
ERDS2TJ242
R 703, 704
ERDS2TJ363
¢ CAPACITORS
C 303
ECKD1H332K8
0.0033 | C 603
A
ECEAQJU471
470
C 31, 32
ECQB1H222JZ
0.0022 | C 304
ECEA1CU101
100 | C 604,605
A
ECKD1H223ZF
C33, 34
ECQB1H822JZ
C 305
ECQP1383JZ
;
A ECKO1H2222F
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