Olympus BH-2 BHT Manual - Page 23

Browse online or download pdf Manual for Microscope Olympus BH-2 BHT. Olympus BH-2 BHT 24 pages. Sliding focus block
Also for Olympus BH-2 BHT: Complete Teardown, Cleaning, And Reassembly (23 pages)

Print Page
Olympus BH-2 BHT Manual
1
EARLY PRODUCTION UNITS WITHOUT
LIGHT PRESET CONTROL / SWITCH
D
BLACK
F101
BLACK
BLACK
BLACK
J101
BLACK
SEE NOTE 1
LINE
ALPS SDT-7
GREEN / YELLOW
POWER SWITCH
GROUND
WHITE
SEE
SW101
NEUTRAL
WHITE
NOTE 6
WHITE
AC INLET
CM-3
C
NOTES:
1- FUSE F101 IS PRESENT ONLY ON THE 240V VERSION OF THE BHTU STAND.
2- THE UYPC48 PCB SCHEMATIC ON PAGE 98 OF THE OLYMPUS BH2(BHS) REPAIR MANUAL DIFFERS FROM THE SCHEMATIC
PRESENTED HERE IN THE WIRING OF THE BAR-GRAPH LEDS AND THEIR CURRENT-LIMITING RESISTORS. SEE DETAIL 1.
3- THE UYPC48 PCB SCHEMATIC ON PAGE 98 OF THE OLYMPUS BH2(BHS) REPAIR MANUAL DIFFERS FROM THE SCHEMATIC
PRESENTED HERE IN THE WIRING OF THE CONTROL VOLTAGE CLAMP. SEE DETAIL 2.
4- THE AVERAGE DC VOLTAGE ON THIS NODE VARIES FROM APPROXIMATELY +10.5V (AT MINIMUM LAMP VOLTAGE)
TO +7.6V (AT MAXIMUM LAMP VOLTAGE), DUE TO INCREASED RIPPLE AT HIGHER CURRENT DRAINS.
5- SEE APPENDIX 3 FOR LATER PRODUCTION UNITS THAT INCLUDE THE LIGHT PRESET CONTROL / SWITCH.
B
6- NEVER OPERATE THE MICROSCOPE WITHOUT THE CENTER TERMINAL OF THE AC INLET ELECTRICALLY BONDED TO THE CHASSIS.
7- W201, W202, W203, AND W204 (NOT SHOWN IN THE SCHEMATIC) ARE ZERO-OHM CIRCUIT JUMPERS INCLUDED TO ALLOW
A SINGLE LAYER PCB. THESE COMPONENTS ARE PRESENT ON EARLY PCBS ONLY.
FILTERED
FILTERED
DC SUPPLY
DC SUPPLY
(+)
(+)
A
(ONE OF FOUR)
(ONE OF FOUR)
AS PUBLISHED IN THE
ACTUAL CIRCUITRY
OLYMPUS REPAIR MANUAL
ON THE UYPC48 BOARD
- DETAIL 1 -
DISCREPANCY WITH OLYMPUS SCHEMATIC
- BAR-GRAPH LEDS -
SEE NOTE 2
1
2
INTENSITY
RED
SLIDER
RV101
ORANGE
500
OHM
BRT
NOBLE
BLUE
SEE
NOTE 5
T101
115V (240V)
BLUE
BLACK
BLACK
100V (220V)
VIOLET
VOLTAGE
SELECT
WHITE
BLACK
SW102
BROWN
POWER TRANSFORMER
DT 0103 (115V)
DT 0104 (240V)
BLACK
HALOGEN LAMP
BLACK
6V/20W, G4 BASE
OLYMPUS 8-C405
J103
LAMP HOUSE
LS20H (OLYMPUS 5-LB402) OR
LS20H-M2 (OLYMPUS 5-S119)
D201
D201
FILTERED
DB101 (+)
DC (+)
DB101 (+)
+
SUPPLY
C201
R214
R214
A
D204
D204
D202
D203
D203
A
ACTUAL CIRCUITRY
AS PUBLISHED
ON THE UYPC48 BOARD
IN THE OLYMPUS
REPAIR MANUAL
- DETAIL 2 -
DISCREPANCY WITH OLYMPUS SCHEMATIC
- CONTROL-SIGNAL CLAMP -
SEE NOTE 3
2
BLACK
DB101
RED
S15VB10
BLACK
SEE DETAIL 3
RED
1
BLUE
2
RED
3
ORANGE
4
BLUE
5
BLACK
6
VIOLET
7
A
YELLOW
8
J1
Q101
2SD867
BROWN
VIOLET
C202
.047uF
YELLOW
POWER
TRANSISTOR
SEE DETAIL 4
Q201
2SA817
OLYMPUS UYPC48
FILTERED
REAR OF BASE
DC (+)
+
SUPPLY
C201
AC
BLACK
A
IN
D202
RED
POS
AND
A
OUT
BLACK
- DETAIL 3 -
PINOUT OF BRIDGE
RECTIFIER DB101
-INSTALL WITH THERMAL PASTE-
(VIEW FROM TOP OF BASE)
3
D201
1N4002
+ C201
R214
47uF
R203
10k
25V
820
A
1/8W
1/8W
P/O P1
D204
SEE
LED
1N4148
NOTE 3
"A"
D203
POWER
1N4148
D202
1N4148
R208
A
A
4.3k
1/8W
R201
0.1 OHM
5W
Q202
2SA817
R209
2k
1/8W
R202
200 Ohm
1/8W
R213
R210
10k
1.5k
1/8W
1/8W
R211
1.8k
1/8W
R212
2k
1/8W
A
REAR OF BASE
BLUE
NEG
C
AND
OUT
BROWN
VIOLET
B
E
YELLOW
BROWN
AC
BLACK
IN
- DETAIL 4 -
PINOUT OF POWER
TRANSISTOR Q101
-INSTALL WITH THERMAL PASTE-
(VIEW FROM TOP OF BASE)
3
4
REV
REVISION DESCRIPTION
DATE
ECO #
1
Initial Release
6-16-14
---
2
Added component info
3-10-16
---
+7.6 TO +10.5 VDC SEET NOTE 4
SEE
NOTE 2
P/O P1
LED
LED
LED
LED
"B"
"C"
"D"
"E"
2V
4V
6V
7V
R204
R205
R206
R207
820
820
820
820
4
3
1/8W
1/8W
1/8W
1/8W
+
1
2
-
IC1-A
uPC324C
11
NEC
A
12
14
13
IC1-D
uPC324C
NEC
5
7
6
IC1-B
uPC324C
NEC
10
8
9
IC1-C
uPC324C
NEC
COPYRIGHT (C) 2014 CARL HUNSINGER
- APPENDIX 2 -
OLYMPUS BH-2 (EARLIER)
BHT/BHTU ELECTRONICS
REVISION 2
4
D
C
B
A