Olympus BH2 Series, Troubleshooting & Adjustment Manual

Page 1: ...Scanned for personal non business use only September 20 2018...

Page 2: ...OLYMPUS RESEARCH MICROSCOPES BH2 SERIES TROUBLESHOOTING ADJUSTMENT MANUAL FOR ELECTRICAL BASE B2 BDT B2 BDS 2 B2 BDS 3 OLYMPUS...

Page 3: ...and BHTM B2 BDS 2 and B2 BDS 3 are used commonly for BHS BHSU and BHSP The difference between B2 BDS 2 and B2 BDS 3 is described in Hints for Using This Manual in the manual GENERAL CONTENTS Troubles...

Page 4: ...p 2 1 Lamp is not lit No A 2 2 2 Light intensity adjustment fails No A 4 2 3 Lamp flickers No A 5 2 4 Lamp burns out No A 6 3 Display 3 1 Abnormal display No A 7 4 Power Supply 4 1 Power is not suppli...

Page 5: ...d pin Refer to the waveform of JJ means Connect HOT to pin l and GND to pin 2 when using a multimeter or an oscilloscope 0 I means Connect HOT to pin 2 and GND to pin l GND A reference voltage OV in a...

Page 6: ...n switch lS turned ON 0 NO Does the 2V 7V LEDs change YES with the adjustment of the 0 Does the 2V 7V LEDs light intensity control change with the adjust YES ment of the light Replace the intensity co...

Page 7: ...e lamp lit Replace the UYPC48 _ _ 0 2 4 6 7 ODD DD LED display Normal if the resistance value between orange and blue varies smoothly from 0 to 500 when the light intensity control lever is slid with...

Page 8: ...the transistor QlOl normal 1 YES NO Replace the QlOl I Is the lamp light intensity adjustable YES NO Replace the UYPC48 Normal if the resistance value between 0J orange and blue varies smoothly in 0 t...

Page 9: ...PC48 caused by the socket RVlOl Remove the lamp and screw from the lamp socket and check the contact with the lamp for any stain Take care not to fly the spring Don t touch the lamp by a bare hand Avo...

Page 10: ...nsistor QlOl 2 Defective UYPC48 Is the transistor QlOl normal NO l YES 0 t IReplace the QlOl IIs the lamp lit I YES t NO IReplace the UYPC48 J G0 Normal if 0 6V or greater voltage is generated between...

Page 11: ...ariable resistor RVlOl normal YES NO Replace the RVlOl Does the 2V 7V LEDs change with the adjustment of the light intensity control YES f r N_O________ Replace the UYPC48 Does the 2V 7V LEDs change w...

Page 12: ...8 Defective Is the AC cord UYCP conducting NO Replace the Is power supplied normally YES NO Is the main fuse FlOl conducting NO Replace the SIJ102 JI02 UVPC48 Causes diode bridge DBlOl transformer TlO...

Page 13: ...is generated when measured with a multimeter at the input terminal of the diode bridge DBlOl I Replace I the TlOl I I Is power supplied normally j YES NO c Check the input voltage bet terminal of the...

Page 14: ...h SWlOl GND WlOl conducting GND 4 I Normal if the resistance values between the terminals of the main switch SWlOl are as shown below when measured with a multimeter 3 I 4 I c ON l OFF ON 2 OFF ON 3 O...

Page 15: ...A TROUBLESHOOTING B2 BDT No A ll Remove the Jl02 and check the wave form of rn 11 wit h an oscilloscope Normal if the waveform is as shown below...

Page 16: ...N rl I t E Cl ill I N ill l J z H E 8 r U 1 1 I ill J E t s rd tJ1 rd 1 Cl iJ 1 1 u 1 u L W101 r I F101 H101 H102 9V ov AC Im ETJ jPOWERI jvOLTAGESELECTORj 08101 1 13 I 5 I 4 6 J103 6V20W 0101 2...

Page 17: ...S l Hints for Using This Manual No B 1 2 Lamp 2 l Lamp is not normally lit No B 3 3 Display 3 l Abnormal display No B 5 4 Power Supply 4 l Power is not supplied even after the main switch is turned on...

Page 18: ...upply voltage The symbols like and B mean Jump to A and in the same item The symbol means Jump to I in another item The symbols and mean Proceed the work according to the check methods and given in th...

Page 19: ...AX 2 1 0 VA 0 5 0 6 0 H z 0 0 5 0 6 0 H z 0 LAMP 12V100W LAMP 12V100W OLYMPUS OPTIAL eo LTO OLYMPUS OPTIAL eo L To JAPAN JAPAN T 2 200V Channel o o 8010 75A2201240V so 60Hz o o 220 240V so 60Hz 230VA...

Page 20: ...ed by the stained contact of the lamp in the lamp house 4 Defective variable resistor RVlOl 5 Defective UYPC65 6 Defective UYPC64 7 Defective power supply part Remove the lamp house and dismount the l...

Page 21: ...le resistor RVlOl normal NO tYES i Replace the RVlOl Is the lamp lit normally YEs _t NO D Proceed the work according to No J 7 4 Power Supply Check the lamp socket terminals for continuity with the la...

Page 22: ...or switch SW103 the 100 llSV selector switch in the lOOV channel and the 220 240V selector switch in the 200V channel to the appropriate position Is the variable resistor RVlOl normal YES NO Replace t...

Page 23: ...UYPC65 4 Defective UYPC64 5 Defective transformer Tl02 6 Defective transformer TlOl 7 Defective main switch SW102 8 Defective primary voltage selector switch SW103 9 Defective breaker SWlOl 10 Defecti...

Page 24: ...mally YES 1 NO END z Are the secondary and third output voltages of the transformer Tl02 normal t YES NO G0 Normal if the terminals illustrated below are conducting Measure the secondary and third out...

Page 25: ...65 normal NO l I Replace the Tl02 J Is power supplied normally I YES 1NO Measure the voltage between SW103 1 ACllSV imeter to the red AClOOV AC220V Wblue AC240V and FlOl with a mult Normal if the volt...

Page 26: ...o the AC line voltage is applied Abnormal if not The terminals are covered with a tube Tear the tube or puncture it with a needle for the measurement Q Monitor the waveform between J201 CD and J201 rn...

Page 27: ...voltage selector switch SW103 Is power supplied normally YES F Replace the main switch SW102 Is power supplied normally YES ro Replace the noise filter RClOl Is power supplied normally YES 0 NO H Repl...

Page 28: ...101 g L J SW102 QV l lllllU r r v I I I I I I L 3 ns L UYPC65 I I I I I L 115 240 V 100 220 V L 1 Jl 02 1 Jl 02 2 V1 f ti 0 s f rt tl f OJ t Q ti OJ s I to 8 es c to t M en r 0 0 8 H z Cl to N I to tl...

Page 29: ...C ADJUSTMENT B2 BDS 2 CONTENTS l Measuring Instruments To Be Used No C l 2 Locations of Adjusting Trimmers No C l 3 Adjustment Procedure No C l...

Page 30: ...ltage with a multimeter RMS type and turn the adjusting trimmer RVl clockwise so that 11 8 0 2V is obtained Measure the output voltage at the brass part for connecting the lamp house as illustrated be...

Page 31: ...S 1 Hints for Using This Manual No D 1 2 Lamp 2 1 Lamp is not normally lit No D 3 3 Display 3 1 Abnormal display No D 6 4 Power Supply 4 1 Power is not supplied even after the main switch is turned on...

Page 32: ...and mean Proceed the work according to the check methods and given in the same item Be sure to set up the unit before turning on the main switch A terminal is exposed at rn IJ and IW 2 Measure at the...

Page 33: ...X 2 1 0 VA 0 5 0 6 0 H z 0 0 5 0 6 0 H z 0 LAMP 12V100W LAMP 12V100W OLYMPUS OPTIAL eo Lro OLYMPUS OPTIAL eo LTD JAPAN JAPAN T 2 200V Channel s2 BD s c 1 A B 0 9 8 9 0 0 A B 6 1 6 0 0 0 H f e o o 8010...

Page 34: ...ive lamp socket including the stained lamp contact 3 Defective variable resistor RlOl 4 Defective secondary PCB Ul02 5 Defective display PCB Ul03 6 Defective power supply part Is the lamp conducting R...

Page 35: ...ls conducting with the lamp mounted f 0 Replace the f YES 0 i lamp socket Is the lamp lit normally YES t NO Is the variable resistor RVlOl normal t t YES NO 0 t IReplace the RVlOl Is the lamp lit norm...

Page 36: ...ple CN2 I Approx DC14 l7V CN2 l blue CN2 I Approx DC14 l7V Approximately AC0 8V is detected when the light intensity control lever is set to the Min position and the main switch is turned on This is n...

Page 37: ...or RlOl normal I YES NO y Replace the RlOl Does the display with LED change with the adjustment of the light intensity control variable resistor RlOl display PCB Ul03 secondary PCB Ul02 power supply p...

Page 38: ...voltage of the secondary PCB Ul02 with a multimeter Normal if the input voltage is as specified in the following table when the light intensity control lever is moved from Min to Max Abnormal if not I...

Page 39: ...U I 0 Causes 1 The breaker c BlOl functions 2 Defective main switch SlOl 3 Defective AC cord UYCP15 in lOOV channel 4 Defective AC inlet PlOl 5 Defective breaker CB101 6 Defective filter PCB Ul04 7 D...

Page 40: ...ut voltage of the filter PCB Ul04 normal f YES 0 1 NO Replace the breaker CBlOl Normal if the terminals illustrated below are conducting Measure the voltage between PlOl and PlOl ill with a multimeter...

Page 41: ...s the input voltage of the primary PCB UlOl normal YES NO Replace the main switch SlOl Is power supplied normally YES c NO Replace the primary PCB UlOl Measure the voltage between Ul04 B 3 black and U...

Page 42: ...BH2 F 5 Circuit Diagram 100V 200V J1 Short J1 Open D TROUBLESHOOTING B2 BDS 3 I CN1 1 I o 1 1 2 I 3 I uR39 D R20 3 2 1 VRU Q3 11 P1 R50 I ED3 No D 11 Ui021 H 2 2 SV 12V I I L A19 L V R __u_1J...

Page 43: ...E ADJUSTMENT B2 BDS 3 CONTENTS 1 Adjusting the maximum voltage value No E l 2 Checking the minimum voltage value No E 2 3 Checking the LED indication voltage No E 2...

Page 44: ...ondary PCB DZ082400 H 2 Gray cord G W 2 White cord Be sure to set a halogen lamp 12V 100W before making the adjustment 1 2 Adjust the adjusting trimmer VR2 of the secondary PCB DZ082400 so that DCll 8...

Page 45: ...ht intensity control lever so that all the LEDs up to 9 are lit and the LED of 9 5 is not lit in the LED indication shown below LED of 9 5 LED located between 9 and 10 Verify that the output voltage i...

Page 46: ...E ADJUSTMENT B2 BDS 3 3 3 Verify that the LEDs up to 12 are lit when the light intensity control lever is set to the MAX position 3 6 7 8 9 10 11 12 All the LEDs are lit No E 3...