Nakamichi BX-2 - Page 2

CONTENTS
1 GONOr AE 4 sl fs 55d Gnd eGR Saya bigs Soe ee a aw Las eR RL ST Gown Osco leeEsae, Sto, Bieta hs ak oP ASME RI Gs atte Moadite rasta Sedona
9, ‘Mechanical Adjustments: .... 56.05.06 6 605 ese oe bre ee RS BED we EIS OO ON ee we eg bases
2. 1. Tape Guide Height Check for Record/Playback Head and Erase Head. .........-.02200000-
2. 2. Head *Base:Stroke: Cheek: ie seciic ts 3 ater aes seen ALG. wag a aied Ole Saas BEE, teclan ab foes aoa aS; ieee
2. 3. Record/Playback Azimuth Alignment and Height Check ..... 0... 0. ccc ec ee te eee
2. 4. Pressure Adjustment of Pressure Roller... 0... 0... cee ee ee ne ete tee eens
2. 5. Tape Travelling Check oscg-5.5 6.008 sewn S baad b 8a ee Bak b, Dawe the Male a ra Ber Sas Beare eae, 2
2. 6. Eject Damper Adjustment ... 0... 2... ee ete eee ee tee eee eens
2. 7. Reel Motor Speed Adjustment in Play Mode ............ 02 cee eee ee ee eee eee
2. 8. Tape Speed Adjustment... occ: igseee eos sa tevin, bee es ee ee eed eS So eee ee a Se eae ees
2. 9. Ti DriCAtION 5.5.5 56 joc oF ES AD Ae aS Bete SS ae ese FH Sha E ee as PIS Be AE Se eS ae
3, Parts Location for Electrical Adjustment... ........0.. 0. eee ee ee eee ee ee ee ee eee ee eee
4. Electrical Adjustments and Measurements ............ 00. cee ee eee ee eee eee ete
4, 1. Adjustment and Measurement Instructions ......... 0... eee eee eee eee tenes
4, 2. Dolby NR: Cireuit: Cheeks 2: sacks ee See Pe ee haw A 0 SE Be Ee ENS A EP eee ORE
5. Mechanism Ass’y and Parts List... 0... cc ee ee ee eee eee ee ee ee eee
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5. 2, Synthesis Mechanism Ass’y (AO1) 2.1... ee eee eee ee ee eee
5. 3. Mechanism Ass’y (BOL) 2.0... ce ce eee ee ee ee ee ee tener eee tee enteane
6. Mounting Diagrams and Parts List .. 1... 1. ee ee eee ee te ee ee ee eet teens
6. 1. Power: Switch’ PC. Bi Ase yi o's eas ooo Bish oe wha Ss bela SG Ok GN Bea OR ge wee Ge Hed aye
6. 2. Pin-Jack-P:C.B. Assy soso cates bio eee samba intsvee tac a Sa waa! Bre le By BOS BS ah os te a, tee habe OLS aE BEE Bate eas
6. 3. Volume P:C.B..Ass’y $6.05 05 3d eat lacd: he oe ls a hl AG ES Sees wee ed A a SS
6, 4. Dolby NR: Switch:P:C.B: Ass’V cc. cia ie earache 6b. 0S. Beeps eee els Guales Bel eel! Boa aliens
6. 5. Indicator: P.C.B:. Assy? 5606.3. S we clos we SSAA Bele Biba ee ae a Oe ae aa ea Se a
6. 6. Timer: Switch P:C.By Ass’y iri) oe ddd dese ws baste asco Biel es bein de Se dee pS oS ae Gabe aE
6. 7. Control Switch. P:C-B; Ass’y. ..e.6.5 3 felons be bse ween a Abe We a BG Geelao eg a Pp Rte, Be a ee es
6. 8. Shut-off P:C.B. Ass’¥ o 646 26508 6 ee ee ee be ee eye Re a ee OE oe ee Da SE
6. 9. Counter: PC: Bi Ass yom oso eis hha 8 Eee Brae ele Bl wlaes Sites ces Saha eis ac leri a ear ge seed cecey oat ah pee oliseys
6. 10. Main’ P.C.B, AS67996 ati & Was coed 28 aye eat pte aule ee wee a ole sep: OR es LEASE Basel arenas bua BRASS.
7. ‘Schematic: Diagrams: 2/6 068-6 0e Fee a Serle Sw Biss wa an UE a BAR alee et ae hk SG atlg Ra De ea lS
7 1. Attention to Servicemen.. 2... 1. ce ee ee eee ete eee eee eee tee eee eee eee
7 2. IC Block: Diagrams i... b.6 claus alae) 8 Oe fe ee SE bates ly EP OG RPE ob ool nal ea ee ein eee eae
7. 3. Schematic: Diagrams 0-006 05 case Sere ee ae 6 GE a ele he ee LE hE a Mate Ba Dre Bharti eee a4
8. Timing Chart and Eq. Amp. Frequency Response .......... 2.2... eee eee ee ee eee ee tee eee ee
QO.» “Wiring Diagrams i) a 2s Gis cd ate ese eo 0 Cee cori asa se bio b Teed eae econ 0s el oh oe) tol sts), dhlelgalion esas oe ao Seat eG. Gus Wee Ores
10... “Block: Diagrams... 6 3:5 aS: 5 eh Soh aig o Rete eRe ES A, Dodie Wine hace aes Uaotenin eaters leh We alba relia ae, @ eae SHS
AL: “Specifications 5.2 foes & eae s Sette care say eae 0 MORES: oa Ree ALN Oa salah Ble: Bhan eg ee oy ao We Mane eS Bisa
1, GENERAL
1.1. Voltage Selector
Voltage selector is installed on the rear panel for Other version of the Nakamichi BX-2.
This voltage selector can select either 120 V or 220-240 V at customer’s disposal.
1.2, Parts List for Carton and Packing
Part No. Description Q’ty
OF 03673C Carton 1
OFO3674A Packing 2
1.3. Serial Number
The BX-2 has two versions, Silver and Black.
In the service manual, serial numbers of these versions are identified as follows:
Silver version: A316xxxxx
Black version: A317xxxxx
However,
the
actual
serial
number
on
the
serial
number
plate
of
the
BX-2
is
indicated
as
A316.7xxxxx.
The serial number begins with A316.701001.