11.

3 SCN12A Board

FR6H4A52.EPS

CAUTION
When servicing any printed circuit board, be sure to wear an anti-static wristband to ground
your body. If your body is not grounded, static electricity built on your body may cause damage
to electronic parts on the board.

■ Removal Procedures
(1) Remove the covers.
• Front cover
• Lower light protect plate
“3.1 Removing and Reinstalling the Covers”
(2) Remove the support plate (board retainer).
“11.1 Controller”
(3) Disconnect the SNS12A board connectors.

SNS12A board

CN6

CN4

CN5

[Disconnect] Connectors

FR6H4A05.EPS
 MC - 217
(4) Remove the SCN12A board.

Rail

CN1
CN6
CN2
CN3
CN5
CN4

#1
[Disconnect] Connectors
#2
[Remove] SCN12A board
FR6H4A07.EPS

■ Reinstallation Procedures
◆NOTE ◆
When installing the SCN12A board, mount it along the rail.

For reinstallation, reverse the removal steps.

■ Check/Adjustment Procedure
• Make sure that the connectors are connected to their correct locations.

Front view

CN6 CN4 CN5

SNS12A board

CN1 CN2 CN3 CN5 CN4

SCN12A board

FR6H4A35.EPS
11.4 DRV12A-1 Board

FR6H4A53.EPS

CAUTION
When servicing any printed circuit board, be sure to wear an anti-static wristband to ground
your body. If your body is not grounded, static electricity built on your body may cause damage
to electronic parts on the board.

REFERENCE
The SNS12A board and DRV12A board are screwed together, and installed as the DRV12A-1
board to the machine.

■ Removal Procedure
(1) Remove the covers.
• Front cover
• Lower light protect plate
“3.1 Removing and Reinstalling the Covers”
(2) Remove the support plate (board retainer).
“11.1 Controller”
 MC - 219
(3) Remove the DRV12A-1 board.

#2
[Remove] DRV12A-1 board

CN2
CN8
CN3

CN6 CN7
CN5
#1 CN6
[Disconnect] Connectors CN4
CN4

CN5

#1
[Disconnect] Connectors

FR6H4A09.EPS

■ Reinstallation Procedures
◆ NOTE ◆
When installing the DRV12A-1 board, mount it along the rail.

For reinstallation, reverse the removal steps.

■ Check/Adjustment Procedures
• Make sure that the connectors are connected to their correct locations.

Front view DRV12A-1 board

CN2 CN8 CN3 CN7 CN5 CN6 CN4

DRV12A board

CN6 CN4 CN5

SNS12A board

FR6H4A36.EPS
11.5 SNS12A Board

FR6H4A54.EPS

CAUTION
When servicing any printed circuit board, be sure to wear an anti-static wristband to ground
your body. If your body is not grounded, static electricity built on your body may cause damage
to electronic parts on the board.

■ Removal Procedures
(1) Remove the DRV12A-1 board.
“11.4 DRV12A-1 Board”
(2) Remove the SNS12A board.

DRV12A board

SNS12A board

[Remove] B3x6 (x6)

FR6H4A10.EPS

■ Reinstallation Procedures
For reinstallation, reverse the removal steps.
 MC - 221

11.6 DRV12A Board

FR6H4A55.EPS

CAUTION
When servicing any printed circuit board, be sure to wear an anti-static wristband to ground
your body. If your body is not grounded, static electricity built on your body may cause damage
to electronic parts on the board.

■ Removal Procedures
(1) Remove the DRV12A-1 board.
“11.4 DRV12A-1 Board”
(2) Remove the DRV12A board.

DRV12A board

[Remove]
B3x6 (x6)

SNS12A board

FR6H4A11.EPS

■ Reinstallation Procedures
For reinstallation, reverse the removal steps.
11.7 MTH12A Board

FR6H4A57.EPS

CAUTION
When servicing any printed circuit board, be sure to wear an anti-static wristband to ground
your body. If your body is not grounded, static electricity built on your body may cause damage
to electronic parts on the board.

■ Removal Procedures
(1) Remove the controller.
“11.1 Controller”
(2) Remove the boards.
• CPU12A board
• SCN12A board
• DRV12A-1 board
“11.2 CPU12A Board”, “11.3 SCN12A Board”, “11.4 DRV12A-1 Board”
(3) Disconnect the connectors.

#2
[Disconnect] Connectors
MTH12A board
CN1
CN7
#1
[Unclamp] Clamps
CN8
CN10
CN9
CN12

#2
[Disconnect]
Connectors

FR6H4A29.EPS
 (4) Remove the MTH12A board together with the board retaining bracket.

MTH12A board

Bracket

Board retaining bracket

#2
[Remove] BR3x8 (x2)

#1
[Remove] BR3x6

Bracket

#1
[Remove] BR3x6
#2
[Remove] BR3x8 (x2)
FR6H4A30.EPS

(5) Remove the MTH12A board.

Board retaining bracket

MTH12A board

[Remove] BR3x6 (x9) FR6H4A31.EPS

■ Reinstallation Procedures
For reinstallation, reverse the removal steps.
11.8 Power Supply

FR6H4A58.EPS

■ Removal Procedures
(1) Remove the controller.
“11.1 Controller”
◆ NOTE ◆
The TP screw used to secure the ground wire is similar in shape to a DT screw.
When attaching the screw, check its shape to avoid confusing it with a wrong one.

DT screw TP screw

FR6H4105.EPS

(2) Disconnect the connectors.

#1
[Unclamp] Clamps

MTH12A board

CN8
CN9

CN2

#3
[Remove] #1
TP3x6 #4 [Unclamp] Clamps
[Disconnect]
#2
Connector
[Disconnect] Connector

DRV12A board
FR6H4A15.EPS
 CAUTION
The cable connected to the power supply (marked by CAUTION in the illustration below)
should not be detached.

◆ NOTE ◆
To remove the FASTON terminal, push the shaded portion of the terminal illustrated
below to detach it.

Push
FR6H0001.EPS

(3) Remove the power supply.

DETAIL A
#1 Power supply
[Remove]
FASTON terminal
A Power supply
CAUTION
N L

TB2 cable TB1 cable #3

(white) (black) [Remove] B4x6 (x4)

SW4
W4
Bracket

#2
[Remove] BR3x8 (x2)

FR6H4A17.EPS

■ Reinstallation Procedures
◆ INSTRUCTION ◆
Connect the FASTON terminal to its correct location.

For reinstallation, reverse the removal steps.

11.9 Reset Switch

FR6H4A59.EPS

■ Removal Procedures
(1) Remove the controller.
“11.1 Controller”
(2) Remove the reset switch.

#2 CN10
[Disconnect] Connector

#3
[Remove] BR3x6 #1
Bracket
[Remove] Clamp

Reset switch

Anti-vibration
#5
[Remove] Nut
#4
[Remove] Switch cover
FR6H4A18.EPS
■ Reinstallation Procedures
For reinstallation, reverse the removal steps.
11.10 CNN12A Board

FR6H4A60.EPS

CAUTION
When servicing any printed circuit board, be sure to wear an anti-static wristband to ground
your body. If your body is not grounded, static electricity built on your body may cause damage
to electronic parts on the board.

■ Removal Procedures
(1) Remove the controller.
“11.1 Controller”
◆ NOTE ◆
To remove the CNN12A board, take the following steps in the illustration below.

CNN12A
board

FR6H4A19.EPS
 (2) Remove the CNN12A board.

#2
[Remove] BR3x6 (x2)

CNN12A board

CN1

CN2

#1
[Unplug] LAN cable CN2

FR6H4A20.EPS

■ Reinstallation Procedures
◆ INSTRUCTION ◆
The CNN12A board should be installed in the orientation as illustrated below.

CNN12A board

CN1
CN2

FR6H4A33.EPS

For reinstallation, reverse the removal steps.

11.11 Power Supply Socket

FR6H4A61.EPS

■ Removal Procedures
(1) Remove the controller.
“11.1 Controller”
◆ NOTE ◆
To remove the FASTON terminal, push the shaded portion of the terminal illustrated
below to detach it.

Push
FR6H0001.EPS
 (2) Remove the power supply socket.

PUSH
#2
[Remove]
#1 [Remove] FAST-ON terminal Power supply socket

PUSH

L cable
(black)

FG cable
(green) N cable
(white)

FR6H4A22.EPS

■ Reinstallation Procedures
For reinstallation, reverse the removal steps.
11.12 Breaker

FR6H4A62.EPS

■ Removal Procedures
(1) Remove the controller.
“11.1 Controller
(2) Remove the bracket.

#2
[Disconnect] Connector

#3 #2
[Remove] [Disconnect] Connector
BR3x6 (x2)

#1
[Unclamp] Clamp

Bracket

Controller
FR6H4A23.EPS
◆ NOTE ◆
To remove the FASTON terminal, push the shaded portion of the terminal illustrated
below to detach it.

Push
FR6H0001.EPS

(3) Remove the breaker.

DETAIL A
#1 [Remove] FASTON terminal Breaker

OUT-N cable (white) OUT-L cable (black)

IN-L cable (black)

IN-N cable (white)

PUSH

#2
[Remove] Breaker

PUSH
■ Reinstallation Procedures

WARNING
Before installing the breaker, put the breaker switch in the OFF position.

GOOD NG

Breaker Breaker

OFF position ON position

Breaker FR6H4A32.EPS

CAUTION
The breaker should be mounted in its correct orientation.

T
O
P

Breaker

FR6H4A26.EPS

For reinstallation, reverse the removal steps.

■ Check/Adjustment Procedures
• Make sure that the breaker is installed in its OFF position.
• Make sure that the breaker is mounted in its correct orientation.
11.13 Fans (FAN1 and FAN2)

FR6H4A63.EPS

■ Removal Procedures
(1) Remove the controller.
“11.1 Controller”
(2) Remove the fan (FAN1).

#2
[Disconnect] Connector
#1
[Remove] Clamp

CN12

Label

Fan (FAN1)

Cover

#3
[Remove] B3x35 (x2) FR6H4A28.EPS
 (3) Remove the fan (FAN2).

#3
[Remove] B3x35 (x2)

Cover #2
Fan (FAN2) [Disconnect] Connector
#1
[Remove] Clamp

CN11

Label

FR6H4A27.EPS

■ Reinstallation Procedures
◆ INSTRUCTION ◆
When installing the fan, orient its label as shown in the illustration.

For installation, reverse the removal steps.

 MC - 238

12. Replacing the Fuses and Fuse Locations

◆ INSTRUCTION ◆
There are two fuse types: normal-blow type and slow-blow type
The slow-blow type fuse has a mark “T” silk-screened on it.
When replacing the fuse, check its type.

● Example of silk-screened marks

Normal-blow type Slow-blow type

LE
2A
LE T
2A
LE
2A

FR6H4C13.EPS

REFERENCE
The fuse (1A-5A) installed prior to shipment and a new replacement fuse (1A-5A) may
have different silk-screened marks.

● Example of silk-screened marks

Fuse installed prior Replacement fuse

to shipment

LE LE
2A 2A

FR6H4C14.EPS
■ List of Fuses

Board Code No. Type Rating (A) Fuse number ✼

MTH12A 137S2097 Slow blow (T) 5 A11, A21, A31, A41, H11, J11
137S2096 Slow blow (T) 4 B11, B21, C11
137S2094 Slow blow (T) 3 C21, C31
137S2092 Slow blow (T) 2 K11
SCN12A 137S2084 Slow blow (T) 1.5 A22, H12, H13, H14, J12
SNS12A 137S2084 Slow blow (T) 1.5 A32, A33
137S2083 Slow blow (T) 1 A34
137S1219 Normal blow 500 m A35
DRV12A 137S2094 Slow blow (T) 3 D11, D21, D41, D51, E11, E21,
E31, E51, L31
137S2092 Slow blow (T) 2 L11
137S1220 Normal blow 2 D31, E41, L21
✼ Fuse number: Number indicated in the fuse block diagram. Tbl_MC213_LB.EPS

■ Fuse Replacement Procedures

CAUTIONS
• When servicing any printed circuit board, be sure to wear an anti-static wristband to ground
your body. If your body is not grounded, static electricity built on your body may cause
damage to electronic parts on the board.
• When replacing the fuse, check the type and rating (A) of the fuse to be replaced, and replace
it with a fuse of the same type.
At the same time, check the rating (A) silk-screened on the board as well.
• To replace the fuse, use tweezers and exercise care not to damage the rib of the fuse holder.

(1) Remove the board.

“11. Removing and Reinstalling the Controller”
(2) Pull out the fuse and replace it with a new one.

Tweezer

[Pullout] Fuse

Fuse box

Board
Fuse holder latch
FR6H4301.EPS
12.1 MTH12A Board Fuses

■ Removal Procedures
(1) Remove the MTH12A board.
“11.7 MTH12A Board”
(2) Replace the fuse.
“■ Fuse Replacement Procedures”

■ Fuse Locations
MTH12A board
FUSE5 FUSE4
FUSE7
FUSE6
FUSE12 FUSE8

FUSE1 FUSE10

FUSE11 FUSE9

FUSE2

FUSE3
FUSER6H4C03.EPS

FR6H4C03.EPS

■ Fuse Information

Board indications Type Rating (A) Fuse number ✼

FUSE1 Slow blow (T) 5 A31
FUSE2 Slow blow (T) 5 A21
FUSE3 Slow blow (T) 5 A11
FUSE4 Slow blow (T) 5 A41
FUSE5 Slow blow (T) 4 B11
FUSE6 Slow blow (T) 4 B21
FUSE7 Slow blow (T) 4 C11
FUSE8 Slow blow (T) 3 C21
FUSE9 Slow blow (T) 5 H11
FUSE10 Slow blow (T) 5 J11
FUSE11 Slow blow (T) 2 K11
FUSE12 Slow blow (T) 3 C31
✼ Fuse number: Number indicated in the fuse block diagram.
Tbl_MC214_LB.EPS

■ Reinstallation Procedures
For reinstallation, reverse the removal steps.
12.2 SCN12A Board Fuses

■ Removal Procedures
(1) Remove the SCN12A board.
“11.3 SCN12A Board”
(2) Replace the fuse.
“■ Fuse Replacement Procedures”

■ Fuse Locations
SCN12A board

F5 F6 F7 F10 F8

FR6H4C02.EPS

■ Fuse Information
Board indications Type Rating (A) Fuse number ✼
F5 Slow blow (T) 1.5 A22
F6 Slow blow (T) 1.5 H14
F7 Slow blow (T) 1.5 H12
F8 Slow blow (T) 1.5 H13
F10 Slow blow (T) 1.5 J12
✼ Fuse number: Number indicated in the fuse block diagram.
Tbl_MC215_LB.EPS

■ Reinstallation Procedures
For reinstallation, reverse the removal steps.
12.3 SNS12A Board Fuses

■ Removal Procedures
(1) Remove the SNS12A board.
“11.5 SNS12A Board”
(2) Replace the fuse.
“■ Fuse Replacement Procedures”

■ Fuse Locations

SNS12A board

F1 F3 F2 F4

FR6H4C04.EPS

■ Fuse Information

Board indications Type Rating (A) Fuse number ✼

F1 Normal blow 500 m A35
F2 Slow blow (T) 1.5 A34
F3 Slow blow (T) 1 A33
F4 Slow blow (T) 1.5 A32
✼ Fuse number: Number indicated in the fuse block diagram.
Tbl_MC216_LB.EPS

■ Reinstallation Procedures
For reinstallation, reverse the removal steps.
12.4 DRV12A Board Fuses

■ Removal Procedures
(1) Remove the DRV12A board.
“11.6 DRV12A Board”
(2) Replace the fuse.
“■ Fuse Replacement Procedures”

■ Fuse Locations

DRV12A board

F13
F10 F9 F14
F4 F7 F6 F12 F3
F11 F1 F2

F5

FR6H4C05.EPS

■ Fuse Information
Board indications Type Rating (A) Fuse number ✼
F1 Slow blow (T) 3 D11
F2 Slow blow (T) 3 E21
F3 Slow blow (T) 3 E11
F4 Slow blow (T) 3 D41
F5 Slow blow (T) 3 E31
F6 Slow blow (T) 3 D21
F7 Slow blow (T) 2 L11
F9 Normal blow 2 E41
F10 Normal blow 2 D31
F11 Slow blow (T) 3 D51
F12 Slow blow (T) 3 E51
F13 Normal blow 2 L21
F14 Slow blow (T) 3 L31
✼ Fuse number: Number indicated in the fuse block diagram.
Tbl_MC217_LB.EPS

■ Reinstallation Procedures
For reinstallation, reverse the removal steps.