$1, $5 and Coupons BILL VALIDATOR 

NBM-3000 SERIES 

Service Manual 

TABLE OF CONTENTS 

1. OUTLINE 

The NBM-3000 Series Bill Validator has been developed based upon the M.D.B. communication specifications. This validator is equipped with many added features, such as all plastic construction, built-in antisalting system, accepts U.S. $1, $5 and coupons, vertical sensing, flash Rom programming, unique bill stacking method and other exclusive features. 

2. GENERAL SPECIFICATIONS Specifications and design are subject to change without notice. 

* Detailed Specifications 

(1) Identified as a Genuine Bill 

When the authentic bill (US $1, $5 or Coupon) is inserted into the validator and is found to be genuine, this information is sent to the main controller. 

(2) Identified as a Counterfeit Bill 

      The inserted counterfeit bill is automatically returned. 

              * Bills 146mm or shorter and 166mm or longer. 

              * Bills having an unclear optical pattern. 

(3) Inserted Bill Not Accepted 

The bill validator is unable to accept bills in the following cases: 

              * When the stacker is determined to be full. 

              * When the validator develops a motor fault. 

* When the validator develops a sensor fault. (Dirty) 

              * If a bill jam operation. 

             * When the bill is pulled from the validator during operation. 

(4) When the Stacker is Full 

    The full signal is sent to the main controller when the stacker is     full. To clear this signal; open the stacker, remove the bills and close (safety switch ON/OFF) the stacker. This is transmitted to the main controller. 

3. Quick Model Reference Chart for NBM-3000 Series 

4. INSTALLATION 

5. COMPONENT DESCRIPTION 

5-1 Identification of Components 

5-2 Bill Path and Operations 

6. PREVENTIVE MAINTENANCE 

The validator bill path can become contaminated by dirty bills, dust, moisture or other foreign matter. If the L.E.D. flashes three times, the validator sensor has been heavily contaminated; clean the sensor. It is strongly recommended to clean the validator every one to three months depending on the amount of use or its environment. 

7. Terminal Connection/Signal Conditions 

7-1 Terminal Conditions 

Note: Input/Output is relative to the Validator. 

7-2 I/O Circuit 

8. CONNECTOR AND WIRING DIAGRAM 

* SIGNALS 

9. BILL VALIDATOR COMPONENTS 

10. DISASSEMBLY AND ASSEMBLY PROCEDURES 

Disassembly the bill validator in the order written, reassembly in reverse order. 

10-1Disassembly and Assembly of the Bill Validator Components 

1. Stacker Box Assy 

Removal: 

1. Lift the white latch upward to open the 

stacker lid. 

2. Stacker box is now removable from the 

validator. 

Installation: 

Reinsert the bottom of the stacker box into the 

validator and close the stacker lid. 

2. Chute (B) Assy 

Removal: 

1. Squeeze both latches inward to open the 

chute. 

2. Pull the chute outward and remove. 

Installation: 

In reverse order. 

3. Front Mask Assy 

Removal: 

1. Remove the pan head tapping screws 

(M3x10). 

2. Pull the front mask assembly toward you, 

slightly push it down and remove. 

Installation: 

In reverse order. 

4. Control Board Assy 

Removal: 

1. Remove the two connectors from the back 

of the control board assy. 

2. Unhook the four latches on the housing and 

pull the control board assy out toward you. 

3. Remove the eight connectors from the front 

of the control board assy and remove the 

board. 

4. Cut the harness tie wrap and remove the 

chute (B) harness assy. 

Installation: 

In reverse order. 

Note: When reconnecting the connectors 

to the board, make sure they are fully 

inserted into the board. Failure to do 

so may cause malfunctions. 

5. Drum Assy (R), (L) and Drum Guide 

(R), (L) 

Removal: 

1. Remove the flat-head tapping screws (M3x8) 

on both sides of the housing and two panhead 

tapping screws (M3x8) inside of the 

housing. 

2. Push the two alignment pins of the drum 

guides from the housing holes and remove 

them together with the drums. The alignment 

pins are firmly fitted in the housing, be careful 

when removing them. 

Note: Be careful not to mistake the right 

drum (R) for the left drum (L) or vice 

versa. 

Installation: 

1. Position the drums on to the drum guides 

and insert the drums and drum guides onto 

the cam of the stack output shaft. 

2. Install the drum guides by inserting the alignment 

pins into the housing. 

3. Make sure the stacker lever is positioned 

inside each drum. 

6. Lift Base Assy and Output Bearing (1) 

Removal: 

1. Remove the two flat head tapping screws 

(M3x8) from both sides of the housing and 

two pan-head tapping screws (M3x8) on the 

lift base. 

2. Pull out the bottom of the lift base assy toward 

you or to the stack side of the housing. 

The belts on the lift base assy may be 

hooked on the mountig posts; unhook the 

belt. 

3. When pulling out the lift base assy to the 

position as shown in Figure 6, hold the gear 

section and remove the right side of the assembly 

first. Pull the left side out (that is 

engaged with the left output shaft) toward 

you. The output bearing (1) located on the 

left side needs to be removed together with 

the lift base. 

Note: When pulling out the bottom of the 

lift base assy toward you, be sure not 

to pull it up excessively or the engaging 

gears may be damaged. 

Installation: 

1. Assemble the output bearing (1) onto the 

left side of the output shaft on the lift base 

assy. Insert the left side together with the 

bearing into the housing. 

2. Insert the right side of the lift base output 

shaft into the housing. Unhook the belts from 

under the mounting post on the back side 

of the housing. 

3. Insert the bottom of the lift base assy into 

the housing by spreading the sides of the 

housing. 

4. Install the two pan-head tapping screws 

(M3x8) to the lift base and the two flat-head 

tapping screws (M3x8) onto the sides of the 

housing. 

Note: When installing the lift base assy, be 

careful not to let the output bearing 

(1) and the idling roller slip off. Also 

make sure to unhook the belts from 

the mounting post before inserting 

the assembly. Failure to do so may 

result in damage to the belts. 

10-2 Disassembly and Assembly of the Housing 

1. Carrier Gear Cover 

Removal: 

1. Remove the two flat head tapping screws 

(M3x8) from the carrier gear cover. 

2. Unlatch the two tabs inside the housing with 

a flat-head screwdriver and remove the 

cover. 

Installation: 

In reverse order. 

2. Carrier Gears, Bearings, and Pulse 

Shaft Assy 

Removal: 

The carrier gears, bearings and pulse shaft assembly 

can be disassembled as shown in Figure 

2. 

Note: When removing the gears inserted 

into the shaft, take care not to damage 

them. 

Installation: 

When assembling, be careful not to damage 

the gears or forget their positions. 

3. Carrier Motor and Harness Assy 

Removal: 

1. Remove the two pan-head screws (M3x4). 

2. Remove the carrier motor and harness assembly. 

Installation: 

In reverse order. 

4. Stack Gear Cover 

Removal: 

1. Unlatch the two tabs on the stack side of the 

housing. 

2. Pull upward and remove the cover. 

Installation: 

1. Latch the two tabs (on the front side) of the 

housing. 

2. Push the cover in place. 

Note: Be careful not to pry the tabs aggressively. 

5. Stack Gears and Shaft 

Removal: 

The gears and shaft can be disassembled as 

shown in Figure 5. 

Note: When removing the gears from the 

shaft, be careful not to damage them. 

Please pay close attention to the position 

of the stack output gears. 

Installation: 

When installing the gears, the cam shaft of the 

two stack output gears should be oriented in 

the same position as they were prior to removal. 

Note: If the cam shafts are not positioned 

correctly, the drum assemblies (R) 

and (L) cannot be installed. 

6. Stack Motor and Harness Assy 

Removal: 

1. Remove the two pan-head screws (M3x4) 

from the stacker motor. 

2. Remove the stack motor and harness assy. 

Installation: 

In reverse order. 

7. Main Latch, Shaft and Spring 

Removal: 

1. Pull the shaft out by pressing one side. 

2. Remove the stacker latch, shaft and spring. 

Note: The spring is under tension, be careful 

during disassembly and assembly. 

Installation: 

In reverse order. 

8. Carrier Switch and Harness Assy 

Removal: 

1. Remove the harness from the housing. 

2. Pull the switch assy upward toward you and 

remove. 

Installation: 

In reverse order. 

Note: Be sure to route the harness as it was 

prior to removal. 

9. Safety Switch and Harness Assy 

Removal: 

1. Remove the harness from the housing. 

2. Unhook the right and left latches and pull 

the switch toward you. 

Installation: 

In reverse order. 

Note: Be sure to route the harness as it was 

prior to removal. 

10. M.D.B. Harness Assy 

Removal: 

Cut the harness tie wrap from the M.D.B. Harness 

Assy and the housing. 

Installation: 

Reinstall the M.D.B. Harness Assy back into 

place, and fasten the harness with the tie wrap 

as illustrated in Figure 10. 

10-3Disassembly and Assembly of the Chute (B) Assy 

1. Chute (B) Cover 

Removal: 

1. Unhook the four latches on the back of the 

chute (B). 

2. Slide the whole cover toward you and unhook 

the lower two latches to remove the 

cover. 

Installation: 

In reverse order. 

2. Chute (B) Latch and Spring 

Removal: 

1. Remove the right and left ends of the spring 

from the chute (B) latches. 

2. Remove the latches. 

Installation: 

In reverse order. 

Note: 

Install the components in the reverse order 

of the removal procedure. 

3. PX L.E.D. Board Assy 

Removal: 

1. Unhook the four latches on the board. 

2. Cut the tie wrap and remove the PX L.E.D. 

board assy. 

Installation: 

In reverse order. 

4. Rollers, Brackets, Shafts and Springs 

Removal: 

1. Unhook the two latches on the first-rollerbrackets 

by inserting a small screwdriver. 

2. Remove the rollers, springs and shafts of 

the first-roller-brackets. 

3. Unhook the four latches on the second-rollerbrackets 

by inserting a small screwdriver 

from the opposite side. 

4. Remove the rollers, springs and shafts of 

the second-roller-brackets. 

5. Remove the end of the carrier roller spring 

from the guide gutter and unlatch the convex 

part. The spring can now be removed. 

6. Remove the carrier roller and shaft. 

7. Confirm that the disassembled rollers, brackets, 

shafts and springs are as shown in Figure 

4. 

Installation: 

Install the components in the reverse order of 

the removal procedure by referring to Figure 4. 

Note: 

1. Special care should be taken with the 

springs as they may have different 

strengths even if their shapes are the 

same. DO NOT MIX THE SPRINGS! 

2. Be sure to replace the carrier roller 

springs as they were prior to removal. 

3. If the springs are wrongly oriented, the 

validator may not perform correctly. Take 

notice of the proper position of each 

part. DO NOT MIX THEIR LOCATION! 

10-4Disassembly and Assembly of the Stacker Box 

1. Stacker and Stacker Box (Upper or 

Lower) 

Removal: 

1. Unhook the right and left stacker latches on the 

top. Insert a flat-head screwdriver into the mating 

surface of the box to open the surface. 

2. Disassemble he stacker box guide from the 

stacker box. 

Note: 

Do not apply excessive force to separate 

the stacker box from the stacker guide. 

Installation: 

1. Mate the stacker with the stacker box guide. 

2. Assemble them back into place. 

2. Stack Plate, Stacker Box and Pressure 

Spring 

Removal: 

1. Unhook the latch on the spring and remove 

the plate and spring. 

Installation: 

In reverse order. 

3. Stack Levers and Spring 

Removal: 

1. Unhook the latch shown in Figure 3 with a 

flat-head screwdriver. 

2. Pull the lever upward toward you, unhook the 

latch on the other side and remove the spring. 

Installation: 

1. Install the spring onto the stack lever and 

hook the end of the spring into the slot. Now 

push the stack lever into the hole. 

2. Push the other end of stack lever into the 

other hole. 

Note: 

Be careful not to mistake the right side (R) 

for the left side (L) or vice versa when installing 

the lever and the spring. 

4. Stack Cover, Roller, Bracket, Prevention 

(of hanging) Lever and 

Spring 

Removal: 

1. Unhook the two latches in front of the stack 

cover with a flat-head screwdriver. 

2. Unhook the four latches while lifting the 

stacker cover toward you. 

3. Remove the cover and then individual parts 

as shown in Figure 4. 

Installation: 

In reverse order. 

Note: 

Individual parts are small, be careful not to 

lose or damage them. 

10-5Disassembly and Assembly of the Front Mask Assy 

Removal: 

1. Remove the pan-head tapping screw (M3x8). 

2. Remove the mask from the metal mask base. 

Installation: 

In reverse order. 

10-6Disassembly and Assembly of the Lift Base Assy 

1. Mask Chute (Upper) Assy 

Removal: 

Unhook the two latches with a flat-head screwdriver 

and pull the upper mask chute assembly 

toward you. 

Installation: 

In reverse order. 

(1) Inlet Sensor Board Assy 

Removal: 

Remove the two flat-head tapping screws 

(M3x8). 

(2) Inlet Lever, Shaft and Spring 

Removal: 

1. Remove the shaft from the chute with a flathead 

screwdriver. 

2. Remove the inlet levers and springs from 

the shaft. 

Installation: 

Assemble the lever and spring onto the shaft 

and install them into the chute. 

Note: 

Adjust the position of the springs so that 

the inlet levers move smoothly. Do not increase 

spring tension. 

2. Idler, Shaft, Springs and Belts 

Removal: 

1. Grip the springs with a pair of pliers and remove 

then from the shaft. Do not overextend 

the springs. 

2. Spread the lift base housing case apart just 

enough to remove the shaft and idlers. Do 

not over stretch the case. 

3. Remove the shaft and belts. 

4. Remove the E-rings to remove the idlers. 

Installation: 

In reverse order. 

Note: 

The spring need to be removed when the 

head bracket assy is removed. Do not over 

stretch the springs. 

3. Chute (A), Shutter Motor Assy, Shutter 

Gears and Carrier Pulley Assy 

Removal: 

1. Unhook the two latches and pull the chute 

(A) down. 

2. Remove the two carrier pulleys and two shutter 

gears. Note their positions prior to removal. 

3. Unhook the four latches on the shutter motor 

assy and pull out the assembly. 

Installation: 

In reverse order. 

Note: 

The shutter gears should be oriented in the 

same position as prior to their removal. 

4. Head Bracket Assy, Shutter and Carrier 

Pulley Assy 

Removal: 

1. Remove the two pan-head tapping screws 

(M3x8). 

2. Remove the head bracket assy. 

3. Remove the shutter and two carrier pulleys. 

Installation: 

In reverse order. 

Note: 

Be sure to install the carrier pulleys prior 

to installing the shutter. 

5. P2 Lever, Shaft and Spring 

Removal: 

1. Push the end of the shaft with a thin blade 

screwdriver first and remove the shaft. 

2. Remove the P2 lever and the spring. 

Installation: 

In reverse order. 

Note: 

Do not increase spring tension. 

6. Stacker Chute, Stacker Lever, Drive 

Shaft, Carrier Pulley (1) Assy, Stacker 

Chute Spring, Drive Bearing (2) and 

Idler Shaft 

Removal: 

1. Pull he carrier pulley (1) assy off of the drive 

shaft. 

2. Remove the drive bearings (2) and shaft. 

3. Push the end of the lift base shaft (2) with a 

thin blade screwdriver and remove the shaft. 

4. Remove the E-ring and pull out the lift base 

shaft (1). 

5. Remove the stacker chute spring. 

6. Remove the stacker chute and stacker lever. 

Installation: 

1. Assemble the stacker lever to the stacker 

chute, and then insert the shaft before installing 

the E-ring. 

2. Hook the stacker chute spring onto the shaft. 

3. Install them into the lift base and insert the 

lift base shaft. 

Align the shaft groove with the latch on the 

lift base. 

4. Assemble the carrier pulley (1) assy and 

bearing to one side of the drive shaft before 

inserting them into the lift base. Then install 

the bearing and the carrier pulley (1) to the 

other side. 

5. Hook the stacker chute spring onto the spring 

tab of the lift base. 

11. EXPLODED VIEW AND PARTS LIST 

11-2. Lift Base Assy 

11-3. Housing Assy 

11-4. Chute (B) Assy 

11-5. Front Mask Assy 

11-6. Stacker Assy 

12. EXTERNAL VIEW AND DIMENSIONS 

12-1. NBM-3110, 3120 SERIES 

12-2. NBM-3130, 3140 SERIES 

12-3. NBM-3110-M, 3120-M SERIES 

WHEN CALLING FOR SERVICE, PLEASE PROVIDE THE FOLLOWING INFORMATION: 

MODEL NUMBER____________________ 

SERIAL NUMBER____________________