Teac SYNCASET 238 Page 10 Service Manual Download | Manualshive

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Summary of Contents for SYNCASET 238

Page 1: ...exact replacement 0 dB is referenced to 1V in this manual unless otherwise specifi ed PC boards shown viewed from foil side Parts not shown in the parts lists or parts through listed having no parts n...

Page 2: ...N CCIR IEC ANSI weighted 70 sec approx with C 60 15 min with C 60 pitch control off 482 x 149 x 345 mm 19 x 5 7 8 x 13 9 16 rack mount brackets feet and other protruding parts included 9 5 kg 20 94 Ib...

Page 3: ...from dbx dbxBk Udbx 7 lk dbxt VI RL Fy KOBE Incorporated The name dbx and the dbx symbol are BET trademarks of dbx Incorporated dbx VAFAlkdbx fLI KL Fy KOK HBICHS WTRESNTORT 482 mm 19 345 mm 13 9 16 4...

Page 4: ...238 2 REMOVAL OF EXTERNAL COMPONENTS WeEBda OH LA Disassemble in number order S SiIB ICI LTP ALY Fig 2 1...

Page 5: ...3 PARTS LOCATIONS 38 GnBc ia POWER TRANSFORME POWER SW PCB R P PCB POWER SUPPLY PCB...

Page 6: ...Capstan motor Ass y Fig 3 3 Transport rear view 2 HE...

Page 7: ...itch up press the PLAY button to engage the pinch roller and capstan shaft 3 Slowly pull the spring scale against the pinch roller in the direc tion shown by the arrow in Fig 4 1 until the pinch rolle...

Page 8: ...and part number though they differ in aspects as shown in Fig 4 3 RI1T7 New Type 1 Erase head height and tilt adjustments 1 Set jigs A and B as shown in Fig 4 4 and put the deck into Play mode 2 Adjus...

Page 9: ...ig Rotational amount of both screws A and B should BU 4IeAEF Laat 4 be the same and be limited within 1 4 turn saan 9 HE vv FOR S SHBS S 10 SSROFVUPBRBCKRZETC V HERO RT 9 Check again head height 10 Re...

Page 10: ...only when serews A and B were moved in step 17 7 Head azimuth fine adjustment 20 Play the 315 Hz signal and 6 3 kHz signal on the TEAC MXT 1161 test tape and adjust screw D until there is no phase di...

Page 11: ...POWER Ay FEAVYETS A He FAI YE geese VT THATS SBR ey WxT 111 RML De CES IGWTOE ELT 5 Fhe FP ODM MEME ET F TSBREDS B000He TSH IS KDICHe TAR Ys S F ASSYO REIL VRI Ki4 10 SBTS 2 Fast Winding Torque 3 Moun...

Page 12: ...Set the Pitch Control Switch to EXT and short circuit between pins 13 and 14 of the rear panel ACCESSORY terminal D sub connector 11 Play the test tape and adjust semi fixed resistor R5 on the Pitch C...

Page 13: ...DV9 7BIvIF ESS MERF FTORSHS HH BRBRDYO CEN NiTBo TORE UL 7OBEMHL BERD DO HRD ERS FREE 1 R 12DBR79 7G 7D A VER aDFURS Frequency counter Fig 4 12 2 Load a test tape TEAC MXT 111 or equivalent and run it...

Page 14: ...ter Attenuator DECK under test LINE OUT LINE IN Fig 5 1 Basic testsetup BANE AC Voltmeter dB DECK tpo under test GNDo 14k Hz 63 400 5 AMPLIFIER SECTION CHECKS AND ADJUSTMENTS 5 4 1 RU5 4 2R Oma OIE EL...

Page 15: ..._ BET aot SP BAZ abe Record Reference level without DBX Pe siete ene oe a cE a Record reference level with DBX SRE BL L DBX IN Pie pee ree Fig 5 6 Adjustment and test point locations R P PCB 15...

Page 16: ...6 3 kHz within 2 dB 6 3 k 12 5 kHz ye within 3 4B every channel 6 Reproduce S N Same as above Check only 47 dB or more levery channel Exception ratio ee ee 45 dB or more for channels 1 and 8 Read ing...

Page 17: ...ct to nominal level Connection shown as in Fig 5 1 with a 1 kHz band pass filter inserted Erasure 400 Hz 10 dB thereafter no signal Connection shown as in Fig 5 1 DBX NRs set to OUT Record Repro duce...

Page 18: ...REC FUNCTION SW ON MXT 1161 ch 400Hz 10dB ERAN Sch fal Ek 3 TAPE SYNC SW IN HE Figh 16 18 YP INRIUTAPE SYNC REC FUNTION SW ON 63 14kHz 10dB 8ch 400Hz 10dB aa 3 fa At EAT SSE T 1161 ch R14 ial Frio Fr...

Page 19: ...chO ON boy 7 hy 7urabr F7 Fa Rb eb yvary PAABE 14 RSE 5 25S N ftxch OFF fl REC FUNCTION SW ch ON J 8 Fig 5 1 kHz B P F EAA REC FUNCTION SW ch ON FR Be Fig 5 1 Fe Fig 5 1 1kHz B P F EFA FRR Fig 5 1 dB...

Page 20: ...238 yA 6 EXPLODED VIEWS AND PARTS LIST SBM tes y EXPLODED VIEW 1 20...

Page 21: ...801087900 COVER METER 5800827800 BUTTON P 5801087600 ROD EJECT 5801087700 SPRING EJECT 5786011300 E RING E 2 5 5783543008 SOREW BINDING P TITE M3X8 BLK NI 1 15 5801098600 KNOB ASSY 1 16 5800961600 KNO...

Page 22: ...238 EXPLODED VIEW 2...

Page 23: ...15 5200250000 REMOTE PCB ASSY Refer to pages 31 33 2 16 5200251400 PUNCH IN OUT PCB ASSY Refer to pages 31 33 2 17 A 5317003400 BUSHING 2271 EXCEPT C A 5317005600 BUSHING 2272 C 2 18 5128027000 CORD A...

Page 24: ...238 3 EXPLODED VIEW 24...

Page 25: ...331500 5 786713400 238 Parts marked with require longer delivery time DESCRIPTION REMARKS HOLDER ASSY CASSETTE HOLDER SUB ASSY CASSETTE SHAFT 3A ROLLER GUIDE RIVET PUSH ARM ASSY HOLDER E RING E 1 5 SP...

Page 26: ...238 EXPLODED VIEW 4 26...

Page 27: ...73395000 238 Parts marked with require longer delivery time DESCRIPTION REMARKS CHASSIS ASSY MECHANISM GEAR JOINT ARM ASSY BASE ARM SUB ASSY BASE ROLLER WASHER POL S 31 5X4X0 5T CUT SPRING BASE ARM CA...

Page 28: ...7 PC BOARDS AND PARTS LIST BRMENS y YAR 4 is B44 s oaeE Gi 378 O20 Z POREIO Be R P AMP PCB ASSY ir OS BSO44SO o4 IBS Boe us gi peczoc2 Q7 08 DTASGES HE SG te Be ay PCE aL UL...

Page 29: ...essaeaccarana sos...

Page 30: ......

Page 31: ...Baa is REMOTE PCB ASSY SaaS crated ss OPERATION SW PCB PUNCH IN OUT PCB ASSY ths 4 sian accident 2 eR rare ARES Aint nile RENTS CONROE LY PCB Soph gea os en BT sk...

Page 32: ...0 D33 39 D40 D45 D46 D50 D5 D52 Pt P2 PS P4 P5 P6 P7 P8 P9 PIO PII Ql Q2 Q3 04 Q5 08 Qli 14 RI7 RI8 R20 R33 TPL TP2 ul U2 U3 U4 U5 U6 U7 U8 ug Ul0 15 UL7 26 U27 U28 3 U32 U35 PART NO 5 200250200 52102...

Page 33: ...ITE M3X5 5334045400 JUMPER P 5 0 DI 02 5224012920 JUMPER P 10 0 C ELEC 3300 25V C ELEC 34700 25V DBX SW PCB ASSY C ELEC 4700 25V C ELEC 33300 25V REF NO PART NO C METAL 0 IMF 50V 5 200251500 C METAL 0...

Page 34: ...IO CONT CONT TI4 sit ROLLER T15 S10 INTERRUPT CONTROL fx 2N INT W SYSTEM CLOCK CPU CLOCK WATCH CLOCK GENERATOR STAND BY TIMER DIVIDER sue CONTROL HO PH s66d44 b t A PORT H 4 _ PHO 3 BUZ P23 XTi XT2 Xi...

Page 35: ...UTPUT LEVEL SENSOR INPUT TIMING CAPACITANCE TIMING CURRENT ADJ VEE AN6292NK M50780SP vec R P SIGNAL INPUT EMPHASIS LINE AMP OUTPUT EMPHASIS AMP OUTPUT SW OUTPUT CCA INPUT REC AMP OUTPUT BUFFER AMP INP...

Page 36: ...LB1412...

Page 37: ...238 LC7800 37...

Page 38: ...CHS same as asove i be et seers bees S Es Ae Seen ree ee 3 CH4 same as asoves 4 LU be eS j 2 DOT LED BAR METER SS oe nana ae eo From Bae fase CONTROL page cae Monitor conn 1 i rrr a 1 Pldy ied tty 2 c...

Page 39: ...RIGHT REEL ax e Cc Pt twHT iw ov oh CL verre one werer cns2 a ae hc ERE Tae 93 SCC meter ene dT SSCS NJLSWIEA B s CLEFT REEL 2 SCC were cus 9 ae wat 3 C CC werer ene ro LeONTRGL ro POWER SUPPLY 6 CJ...

Page 40: ...TASCAM Peas pron MOTHER PCB DBX sw Pcp 2OS 1 2 3 4 5 6 7 oe aes cane oe Sa ee I ER Gn ET gen ee pe ee Ee ee eee Eee Lie ee E25 oe rene ch Ca cS le ti see ed Fe co LS 2 TL LSE SS SR oN SL SASS...

Page 41: ...T CIZeES Lares u27 OTei13ES 846208 V2evUst Ok 2d auaoe u32 BaAGESS BUsOSEB otci2ces WETER PCB Aas y METER PCB Aas y METER PCO Ase y OF SLB 2MOF D2 SLE Z8va3e 03 SUB ovASF TU hi Roe ig PUNCH IN OUT PCB...

Page 42: ...Bra12 SHUTTLE ut TRAP COLL wenn UIT UIs OTCIZ4ES P10g vPROZ RIOt A Ot wizvusog OLtiZt3 oan Of wot 1SSI33T 77 v2 pPC4S7OHA ue DTAIZ4ES DIS D22 SLP 177B 60 eee wuts ol fd us LPF tonne 420 pPCASTOHA a O2...

Page 43: ...RAB HGR AR BP 075 842 075140 F600 HRMBATREABSBORPLORASM UF MH wee W ARS HA TW 06 384 s20lty F564 be AH mh K BA 3 34 10 uy MH oR ARE 0862 25 860140 F700 A wi il 3 1142 6 GaSe S RA TH 082 294 475100 F 7...

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