Sony ECM-44BMP User manual

1st Edition (Revised 1)
ELECTRET CONDENSER MICROPHONE
ECM-44BMP
ECM-77BMP
ECM-166BMP
SERVICE MANUAL
ECM-77LM
ECM-77BC
ECM-77B
-FortheECM-77LM,referto"Appendix(ECM-77LM)".
-FortheECM-77BC,referto"Appendix(ECM-77BC)".
-FortheECM-77B,referto"Appendix(ECM-77B)".
CorrectedonJanuary5,2021

!WARNING
This manual is intended for qualified service personnel
only.
To reduce the risk of electric shock, fire or injury, do not
perform any servicing other than that contained in the
operating instructions unless you are qualified to do so.
Refer all servicing to qualified service personnel. The material contained in this manual consists of
information that is the property of Sony Corporation and
is intended solely for use by the purchasers of the
equipment described in this manual.
Sony Corporation expressly prohibits the duplication of
any portion of this manual or the use thereof for any
purpose other than the operation or maintenance of the
equipment described in this manual without the express
written permission of Sony Corporation.
Le matériel contenu dans ce manuel consiste en
informations qui sont la propriété de Sony Corporation et
sont destinées exclusivement à l’usage des acquéreurs
de l’équipement décrit dans ce manuel.
Sony Corporation interdit formellement la copie de
quelque partie que ce soit de ce manuel ou son emploi
pour tout autre but que des opérations ou entretiens de
l’équipement à moins d’une permission écrite de Sony
Corporation.
Das in dieser Anleitung enthaltene Material besteht aus
informationen, die Eigentum der Sony Corporation sind,
und ausschließlich zum Gebrauch durch den Käufer der
in dieser Anleitung beschriebenen Ausrüstung bestimmt
sind.
Die Sony Corporation untersagt ausdrücklich die
Vervielfältigung jeglicher Teile dieser Anleitung oder den
Gebrauch derselben für irgendeinen anderen Zweck als
die Bedienung oder Wartung der in dieser Anleitung
beschriebenen Ausrüstung ohne ausdrückliche
schriftliche Erlaubnis der Sony Corporation.
TableofContents

1.OPERATION.............................................1
2.ECM-44BMP............................................2
3.ECM-77BMP............................................3
4.ECM-166BMP.........................................4
Appendix(ECM-77LM)............................5
Appendix(ECM-77BC).............................8
Appendix(ECM-77B).............................18

1
ECM-44BMP
ECM-77BMP
ECM-166BMP
1. OPERATION
3-860-338-04(1)
Electret Condenser
Microphone
Operating Instructions
Manual de instrucciones
Mode d’emploi
Bedienungsanleitung
General
Type
Electret condenser
Power requirements
3 to 10 V DC (supplied from
an external device, such as a
Sony transmitter)
Current consumption
0.4 mA or less
Cable
ECM-166BMP/122BMP/
121BMP/44BMP:
2.3mm (
3
/ 32 inches) dia., 2-
conductor shielded cable
ECM-77BMP: 2mm (
3
/ 32
inches) dia., 2-conductor
shielded cable
Cable length
ECM-166BMP/122BMP/
77BMP/44BMP: Approx.
1.2 m (3.9 feet)
ECM-121BMP:
Approx. 0.2 m (7
7
/ 8 inches)
Connector
3-pole mini phono plug (3.5
mm (
5
/ 32 inches) dia.) with a
lock mechanism
Mass
(microphone only, without cable)
ECM-166BMP: Approx. 3.5 g
(0.12 oz)
ECM-122BMP/121BMP:
Approx. 3 g (0.1 oz)
ECM-77BMP: Approx. 1.5 g
(0.05 oz)
ECM-44BMP: Approx. 2 g
(0.07 oz)
English
The ECM-166BMP/122BMP/121BMP/77BMP/44BMP
Electret Condenser Microphone is designed for use with a
transmitter having a 3-pole minijack with a lock mechanism
used in a Sony 800-MHz band wireless microphone system.
Connecting to the Transmitter (See fig. A.)
1 Connect the output connector of the microphone to the
input connector of the transmitter.
2 Turn the lock ring to lock.
3 Set the PHASE switch of the transmitter as follows.
ECM-166BMP/122BMP/121BMP: =
ECM-77BMP/44BMP: φ
Specifications
Dimensions (microphone only)
ECM-166BMP:
12.5 dia. × 23.5 mm
(
1
/ 2 dia. ×
15
/ 16 inches)
ECM-122BMP/121BMP:
8.5 dia. × 17.0 mm
(
11
/ 32 dia. ×
11
/ 16 inches)
ECM-77BMP:
5.6 dia. × 12.5 mm
(
1
/ 4 dia. ×
1
/ 2 inches)
ECM-44BMP:
8.5 dia. × 14.5 mm
(
11
/ 32 dia. ×
19
/ 32 inches)
Accessories supplied
Holder clip (1)
Wind screen (1)
Operating Instructions (1)
Performance
Frequency range
ECM-166BMP/122BMP/
121BMP:
100 to 10,000 Hz
ECM-77BMP:
40 to 20,000 Hz
ECM-44BMP:
40 to 15,000 Hz
Directivity
ECM-166BMP: Uni-
directional
ECM-122BMP/121BMP/
77BMP/44BMP:Omni-
directional
Output impedance
2.5 kohms ±30% at
1000 Hz, unbalanced
Design and specifications are subject to change without notice.
A
POWER
OFF ON
INPUTPHASE
SETCH
AF
RF
BATT
+
–

1
2
3
ECM-166BMP/122BMP/
121BMP/77BMP/44BMP
ECM-166BMP/122BMP/121BMP/77BMP/
44BMP
Sony Corporation  1997 Printed in Japan
This section is extracted
from operation manual.
ECM-44BMP/ECM-77BMP/ECM-166BMP

2ECM-44BMP
ECM-77BMP
ECM-166BMP
2-1. SCHEMATIC DIAGRAM
2-2. SPARE PARTS
NO. Part No. SP Description
1 A-4510-056-A s CAPSULE ASSY
2 A-8315-472-A s CASE ASSY, AMPLIFIER
3 1-500-249-21 s BEAD, FERRITE (CASE)
(For CE model only)
Q'ty Part No. SP Description
1pc X-3167-902-1 s SCREEN ASSY, WIND
1pc X-2537-903-1 s CLIP ASSY, HOLDER, HORIZONTAL
1pc 3-860-338-04 s MANUAL, INSTRUCTION
2-3. ACCESSORIES SUPPLIED
1
23
WIND SCREEN ASSY HORIZONTAL CLIP ASSY
3-pole mini
Phone plug Chip
Sleeve
Ring
RED
SHIELD
CAPSULE
AMPLIFIER
CASE
ASSY
S
CABLE WHT
ECM-44BMP
2. ECM-44BMP

3
ECM-44BMP
ECM-77BMP
ECM-166BMP
ECM-77BMP
3-1. SERVICE INFORMATION
Microphone Capsule Removal
3-3. SPARE PARTS
NO. Part No. SP Description
1 A-4510-050-A s CAPSULE ASSY
2 A-8320-067-A s CASE ASSY, AMPLIFIER
3 1-500-249-21 s BEAD, FERRITE (CASE)
(For CE model only)
Q'ty Part No. SP Description
1pc X-5237-404-1 s SCREEN ASSY, WIND
1pc X-5237-410-1 s CLIP ASSY, HOLDER, HORIZONTAL
1pc 3-860-338-04 s MANUAL, INSTRUCTION
3-4. ACCESSORIES SUPPLIED
WIND SCREEN ASSY HORIZONTAL CLIP ASSY
3. ECM-77BMP
3-2. SCHEMATIC DIAGRAM
3-pole mini
Phone plug Chip
Sleeve
Ring
RED
SHIELD
CAPSULE
AMPLIFIER
CASE
ASSY
S
CABLE WHT
S
O
N
Y
1
2
3
Note on mounting
Remove the cpasule assembly
with rubber sheet.
Amplifier case assembly

Capsule assembly

With locking compound

Amplifier case assembly
Capsule assembly
Contact spring

Locking compound: 0.0001 ml
Clean the spring 
portion of the contact
with toluene.

Tightening Torque:
0.11~0.12N•m
(1.1~1.2kgf•m)


4ECM-44BMP
ECM-77BMP
ECM-166BMP
4-3. SPARE PARTS
INDEX
NO. Part No. SP Description
1 1-776-837-41 s CORD WITH CONNECTOR
2 2-538-949-01 s CASE (CAPSULE)
3 2-538-950-01 s SCREEN, SIDE
4 2-538-951-01 s SCREEN, TOP
5 2-540-961-01 s CASE (BUSHING)
6 8-814-227-00 s MICROPHONE BUILT-IN
7 2-523-605-00 s BUSHING, MICROPHONE
8 1-500-249-21 s BEAD, FERRITE (CASE)
(For CE model only)
Index Part No. SP Description
no.
101 X-2536-801-1 s CLIP, ASSY, HOLDER
102 2-539-598-01 s SCREW, WINDOW
— 3-860-338-04 s MANUAL, INSTRUCTION
4-4. ACCESSORIES SUPPLIED
4. ECM-166BMP
4-2. SCHEMATIC DIAGRAM4-1. SERVICE INFORMATION
Built-in Microphone and Microphone Cable
ECM-166BMP
101
102
24673
51
8

SN
OY
Remove the case
(Capsule) with
rubber sheet.

Built-in Microphone
Case (Capsule)

Microphone Cable

Microphone Bushing

Case (Bushing)

Microphone Cable

Built-in Microphone

Ground
Built-in Microphone
Drain
Source
White
Red
Unsolder.
S
CABLE WHT
CHIP
3-POLE MINI PHONE PLUG
RING
SLEEVE
C-1022
RED
SHIELD

5
[Description]
The connector of A-2207-775-A “CASE ASSY (S), AMPLIFIER” cannot be disassembled for
servicing or replaced either.
[Parts Registration Info.]
1
CASE ASSY (S), AMPLIFIER
A-2207-775-A
Only for ECM-77LM (New)
2
CAPSULE ASSY
A-1541-734-A
Common for ECM-77 (Existing part)
3
CLIPASSY, HORIZONTAL
HOLDER
X-2537-404-6
Common for ECM-77 (Existing part)
4
SCREEN ASSY, WIND
A-1927-706-A
Common for ECM-77 (Existing part)
Fig.1
[Parts/Tools Required]
-Screw locking compound (ThreeBond TB-1401B or equivalent)
-DWT-B03R or equivalent and receiving system (for sound quality/operation check)
[Schematic]
Fig.2
①
②
③
④
CAPSULE
ASSY
CASE ASSY, AMPRIFIER
RED
S
8.2kΩ
220pF
SHIELD
3pin - Lemo
CONNECTOR
1
2
3
3pin - Lemo
CONNECTOR
view
Appendix (ECM-77LM)

6
[Procedure]
1. Remove CAPSULE ASSY
CAPSULE ASSY can be removed as shown in Fig.3.
Fig.3
2. Install CAPSULE ASSY
CAPSULE ASSY is installed as shown in Fig.4.
Fig.4
3. Operation check
(1) Confirmation of sound output
1-1 Insert the two projections (Both sides of red mark) on output terminal of “CASE ASSY
(S), AMPLIFIER” while fitting with the groove of input terminal of DWT-B03R side.
(Fig.5)
1-2 Lock the ring located in the output terminal of “CASE ASSY (S), AMPLIFIER” while
rolling.
1-3 Confirm if the sound is output by performing sound output and check the sound quality.
Fig.5
CASE
ASSY(S),AMPRIFIER
Screw locking
compound
CAPSULE ASSY
CASE ASSY
(S),AMPRIFI
ER
Tightening torque:：0.11 - 0.12Nm
CAPSUL
E ASSY
Clean contact spring with ethanol.
Apply screw locking compound on the area
shown below. (Half circumference)
Screw locking
compound applying
area

7
(2) Noise check (Bending test)
Portion: Capsule side (Fig.6), Connector side (Fig.7)
Operation: Take the cable while holding Capsule(connector), and bend it from right side to
left side with an angle of 90 degrees by 2 - 3 times.
Standard: Sound does not cut out and sound noise does not occur.
Fig.6 Fig.7
(3) Noise check (Shock test)
Portion: Capsule portion
Operation: Take the cable of the position of 5 cm from tip of capsule (Fig.8), hit the capsule on
the desk from 5 – 10 cm upper position (Fig.9), and give the shock to it.
After that, roate the cable (Fig.10), do it 10 – 15 times repeatedly and evaluate the
whole around of the capsule.
Specification: Sound does not cut out and sound noise does not occur.
Fig.8 Fig.9 Fig.10
2–3time
2–3time

8
Appendix (ECM-77BC)
[Corrections]
The specifications of the ECM-77BC differ depending on whether it is improved one against the high
frequency interference (supporting Digital WL) or not.
The specifications can be recognized by the color of the microphone bushing.
Microphone bushing:
black
= Not improved one
Microphone bushing:
gray (short)
= improved one against the high frequency interference (1)
(Supporting Digital WL)
gray (long)
= improved one against the high frequency interference (2)
(Supporting Digital WL)
<Reference>
-ECM-77BC Microphone bushing
39
30
9.5
18.5
2-523-605-11
Black and
short
2-523-605-21
Grayand short
4-589-384-01
Gray and long
Fig. 1
Fig. 2
Fig. 3
Fig. 4

9
A. Not improved unit for high frequency interference (bushing: black)
1. Schematic diagram
2. Part Required
Part Name
Part No.
Remarks
1
Capsule ASSY
A-1541-734-A
2
Amplifier Case ASSY
A-2203-644-A
Changed from X-2537-418-5
3
Connector (plug)
1-560-155-73
4
Microphone Bushing
2-523-605-11
Color: black, Length: short
5
Cord Clamp
2-523-606-01
6
-
-
Not used
7
Horizontal Holder Clip ASSY
X-2537-404-4
8
Wind screen ASSY
X-2537-410-1
9
Heat shrinkable tube
-
Included in amplifier case ASSY
CABLE
RED
WHITE
SHIELD
AMPLIFIER CASE ASSY
CAPSULE
CN
S
1
2
3
4
Fig. 5
①
②
④
③
⑤
⑦ ⑧
⑨
Fig. 6

10
3. Procedure
3-1. Wiring to the connector
Connect the wore of the AMPLIFIER CASE ASSY to the CONNECTOR (PLUG). (Fig. 7)
3-2. Attaching the microphone bushing
Apply the adhesive agent (Locktite (Prism 403) or equivalent) between the edge of the coating of
the microphone cable and the point about 10mm from the edge (Fig. 8), and the side of heat
shrinkable tube (Fig. 9), then, attach microphone bushing.
At that time, the cut of the microphone bushing would be by the side of #4pin. (shown in red circle
of Fig. 10)
3-3. Attaching the cord clamp
Put the cord clamp in the groove of the microphone bushing as shown in the Fig. 11 and caulk it.
Red lead
White lead
Shield wire
Shield wire
Notch
Fig. 7
Fig. 8
Apply the adhesive agent to
whole circumference of the
microphone cable between the
edge of the coating and the point
about 10mm from the edge.
Fig. 10
Fig. 9
Fig. 11
Groove
Cord clamp
Microphone bushing
Apply the adhesive agent to the side
of the heat shrinkable tubes also.

11
3-4. Attaching the connector cover
1) Applying the locking agent for screw
Apply the locking agent for screw (ThreeBond 1401B:7-432-114-11 or equivalent) as indicated
by the blue dot in Fig. 12 and attache the connector cover.
2) Fixing the connector cover
Apply the locking agent for screw (ThreeBond 1401B:7-432-114-11 or equivalent) to the screw
hole on the connector cover and tighten the supplied screw. (tightening torque: 0.08Nm) (Fig. 13)
3-5. Removal of the capsule ASSY
The capsule ASSY can be removed as shown in the Fig. 14.
3-6. Note on handling the capsule ASSY
Reassemble the capsule ASSY as shown in Fig. 15.
Fig. 14
Capsule ASSY
Amplifier case ASSY
Locking agent for screw
Fig. 16
Fig. 15
Tightening torque:
0.11 - 0.12Nm
Clean the contact spring
with ethanol.
Capsule ASSY
Amplifier case ASSY
Position to
apply locking
agent for screw
Locking agent for screw
Apply half of outer circumferential
surface indicated in Fig. 16.
Fig. 13
Connector cover
Position to apply: screw hole on the connector
Supplied screw
Fig. 12
Connector cover
Position to apply: 2 teeth of the screw of connector (with 5mm of width)

12
B. Improved unit for high frequency interference (1) (Bushing: Gray)
1. Schematic diagram
2. Part Required
■Improved unit for high frequency interference (1) (Bushing: gray)
Part Name
Part No.
Remarks
1
Capsule ASSY
A-1541-734-A
2
Amplifier Case ASSY
A-2203-645-A
Changed from X-2537-418-5
3
Connector (plug)
1-560-155-73
4
Microphone Bushing
2-523-605-21
Color: gray, Length: short
5
Cord Clamp
2-523-606-01
6
Ground Ring
3-615-397-01
7
Horizontal Holder Clip ASSY
X-2537-404-4
8
Wind screen ASSY
X-2537-410-1
9
Heat shrinkable tube
-
Included in amplifier case ASSY.
10
Jumper wire
-
Included in amplifier case ASSY.
CABLE
RED
WHITE
SHIELD
AMPLIFIER CASE ASSY
CAPSULE
CN
S
1
2
3
4
④
Fig. 17
Fig. 18
⑨
⑩
①
②
④
③
⑤
⑥
⑦ ⑧

13
3. Procedure
3-1. Wiring to the connector
1) Attaching the jumper wire
Connect between #2pin and #4pin by jumper wire.
Reuse the jumper wire which is used originally.
(Do not solder it at this moment.) (Fig. 19)
2) Attaching the ground ring (only for improved one for high frequency
interference.)
Attach the ground ring as shown in the figure. (Fig. 20)
3) Solder the jumper wire and the ground ring to the connector.
As for the ground ring, solder its tip to the #4pin.
4) Connect the wire of the amplifier case Assy to the connector (plug). (Fig. 21)
Bundle two shield wires and solder it to #4pin. (Fig. 22 and Fig. 23)
5) Cover the heat shrinkable tubes on the terminals (#1pin and #3pin) and heat them to shrink by
dryer or equivalent. (Fig. 24)
Jumper wire
2
4
4
2
Fig. 19
Fig. 22
Fig. 20
Fig. 21
Notch
Red lead
White lead
Shield wire
Shield wire
Heat shrinkable tubes
Fig. 23
Fig. 24
Ground ring
Heat shrinkable tube
Float it
about 1mm

14
3-2. Attaching the microphone bushing
Apply the adhesive agent (Locktite (Prism 403) or equivalent) between the edge of the coating of
the microphone cable and the point about 10mm from the edge (Fig. 25), and the side of the heat
shrinkable tube (Fig. 26) and attach the microphone bushing.
At that time, the cut of the microphone bushing would be by the side of #4pin. (shown in red circle
of Fig. 27)
3-3. Attaching the cord clamp
Put the cord clamp in the groove of the microphone bushing as shown in the Fig. 28 and caulk it.
3-4. Attaching the connector cover
1) Attaching the serial number label
Attach the serial number label to the lower part of the microphone bushing. (Fig. 29)
2) Applying locking agent for screw
Apply the locking agent for screw (ThreeBond 1401B:7-432-114-11 or equivalent) as indicated
by the blue dot in Fig. 30 and attache the connector cover.
Fig. 25
Fig. 27
Fig. 30
Apply the adhesive agent to
whole circumference of the
microphone cable between the
edge of the coating and the point
about 10mm from the edge.
Fig. 26
Fig. 28
Groove
Cord clamp
Microphone bushing
Serial number label
Fig. 29
Connector cover
Position to apply
Apply the adhesive agent
to the side of the heat
shrinkable tubes also.

15
3) Fixing the connector cover
Apply thelocking agent for screw (ThreeBond 1401B:7-432-114-11 or equivalent) to the screw
hole on the connector cover and tighten the supplied screw (tightening torque: 0.08Nm)(Fig. 31)
3-5. Removal of capsule ASSY
The capsule ASSY can be removed as shown in the Fig. 32.
3-6. Note on handling the capsule ASSY.
Reassemble the capsule ASSY as shown in Fig. 33.
Fig. 31
Fig. 32
Capsule ASSY
Amplifier case ASSY
Locking agent for screw
Fig. 34
Connector cover
Position to apply
Supplied screw
Fig. 33
Tightening torque:
0.11 - 0.12Nm
Clean the contact spring
with ethanol.
Capsule ASSY
Locking agent for screw
Apply half of outer circumferential
surface indicated in Fig. 34.
Amplifier ASSY
Position to
apply locking
agent for screw

16
C. Improved unit for high frequency interference (2)(Bushing: Gray and long type)
1. Schematic diagram
2. Part Required
Part Name
Part No.
Remarks
1
Capsule ASSY
A-1541-734-A
2
Amplifier Case ASSY
A-2203-645-A
Changed from X-2537-418-5
3
Connector (plug)
1-560-155-73
4
Microphone Bushing
4-589-384-01
Color: gray, Length: long
5
-
-
Not used
6
Ground Ring
3-615-397-01
7
Horizontal Holder Clip ASSY
X-2537-404-4
8
Wind screen ASSY
X-2537-410-1
9
Heat shrinkable tube
-
Included in amplifier case ASSY
10
Jumper wire
-
Included in amplifier case ASSY
CABLE
RED
WHITE
SHIELD
AMPLIFIER CASE ASSY
CAPSULE
CN
S
1
2
3
4
④
①
②
④
③
⑥
⑦
⑧
⑩
⑨
Fig. 35
Fig. 36

17
3. Procedure
The procedure is the same as “B. Improved unit for high frequency interference (1)” other than “3-2.
Attaching the microphone bushing” and “3-3. Attaching the cord clamp”.
3-2. Attaching the microphone bushing
Apply the adhesive agent (Locktite (Prism 403) or equivalent) between the edge of the coating of
the microphone cable and the point about 30-35 mm from the edge (Fig. 37), and the side of the
heat shrinkable tube (Fig. 38), and attach the microphone bushing.
At that time, the cut of the microphone bushing by the side of #4pin. (shown in red circle of Fig.
39)
3-3. Attaching the cord clamp
The cord clamp would not be used for “C. Improved unit for high frequency interference (2)”.
4. Operation check
4-1. Procedure
[Connector side]
Hold the connector, clamp the bushing of the connector side and rotate it two or three times.
[Capsule side]
Hold the capsule, clamp the bushing of the capsule side, and bend it at right under the bushing by
90 degrees right and left two or three times.
4-2. Specifications
A sound is not interrupted and a sound noise does not occur.
About 30 - 35mm from the edge of the connector
terminal.
Apply the adhesive agent to whole circumference of
the microphone cable and the heat shrinkable tubes.
Fig. 39
Fig. 38
Fig. 37
30 - 35mm
Microphone bushing
Apply the adhesive agent
to the side of the heat
shrinkable tubes also.

18
Appendix (ECM-77B)
[Applicable S/No. ]
Choice the parts according to below serial number.
Old : #902000 or before
New : #902001 and after
[Parts change info. And Applicable S/No. ]
< Change point >
- SLEEVE ASSY (Length and part number)
- TRANSFORMER MOUNTED PWB (Mounted parts and part number)
- No function and performance has changed.
Old (#902000 or before)
New (#902001 and after)
Part name
Part number
Part name
Part number
1
CAPSURE ASSY
A4510050A
←
←
2
CASE ASSY, AMPLIFER
X25374135
←
←
3
SLEEVE, BATTERY
444822102 *1
SLEEVE ASSY
A1908370C *1
SLEEVE ASSY
A4531042C *1
4 BUSHING, POWER
253741402 *2
458506801 *2
←
←
5
PCB, EX-1251
A1900797A *3
←
←
6
SPRING
252207201
←
←
7
LID, CASE
252207001
←
←
8
TERMINAL, BATTERY
252207111
←
←
9
CASE, BATTERY
252208401
←
←
10
LUG 2
762350501
←
←
11
LW 2, TYPE (A)
762330507
←
←
12
SCREW +P 2X3
762125512
←
←
13
MOUNTED PWB,
TRANSFORMER
A4538027A ←A4538027B
14
SCREW, PRECISION +K 2X3
762745217
←
←
15
SLEEVE, PIN, CANON
252206803 *1
SLEEVE ASSY
A1908370C *1
SLEEVE ASSY
A4531042C *1
16
SCREW, PRECISION +P 2X7
762755387
←
←
17,18
CANNON XLR3-14 PIN INSERT
150909611
←
←
MANUAL, INSTRUCTION
259925301
←
377670204
MANUAL, INSTRUCTION
259925311
←
377670215
MANUAL, INSTRUCTION
259925321
←
377670224
MANUAL, INSTRUCTION
377670231
*1 #3 “SLEEVE, BATTERY” and #15 “SLEEVE, PIN, CANON” are supplied as assembled.
Please order “SLEEVE ASSY A4531042C”.
*2 Difference of two choices of #4 “BUSHING, POWER”, see the APM17-046R.
*3 Difference of #5 “PCB, EX-1251” and old EX board, see the APM12-037.