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KX-MB1500UC/KX-MB1520UC/KX-MB1530UC

18.2.1. Main Board (KX-MB1500) ----------------------- 346
18.2.2. Main Board (KX-MB1520) ----------------------- 349
18.2.3. Sensor Board --------------------------------------- 354
18.2.4. High Voltage Power Supply Board ------------ 356
18.2.5. Low Voltage Power Supply Board ------------- 356

MB1530 ONLY)-------------------------------------------------- 357

19.1. General Section----------------------------------------- 358

19.1.1. Operation Panel Section ------------------------- 359
19.1.2. Top Cover Section (1) ---------------------------- 361
19.1.3. Top Cover Section (2) ---------------------------- 363
19.1.4. Top Cover Section (3) ---------------------------- 365
19.1.5. Fuser Section --------------------------------------- 367
19.1.6. Main Cabinet Section (1) ------------------------ 369
19.1.7. Main Cabinet Section (2) ------------------------ 371
19.1.8. Main Cabinet Section (3) ------------------------ 373
19.1.9. Main Cabinet Section (4) ------------------------ 375

19.1.10. Left-side Cabinet Section(1) -------------------- 377

19.1.11. Left-side Cabinet Section(2) -------------------- 379

19.1.12. Left-side Cabinet Section(3) -------------------- 381
19.1.13. Power Supply Unit Section ---------------------- 383
19.1.14. Base Cassette Section --------------------------- 385
19.1.15. Main Unit Section (1) ----------------------------- 387
19.1.16. Main Unit Section (2) ----------------------------- 389
19.1.17. ADF Section (1) ------------------------------------ 391
19.1.18. ADF Section (2) ------------------------------------ 393
19.1.19. ADF Section (3) ------------------------------------ 395
19.1.20. ADF Section (4) ------------------------------------ 397
19.1.21. Actual Size of Screws and Washer------------ 399
19.1.22. Accessories and Packing Materials ----------- 401

19.2. Electrical Parts List------------------------------------- 403

19.2.1. Main Board ------------------------------------------ 403
19.2.2. Sensor Board --------------------------------------- 407
19.2.3. High Voltage Power Supply Board ------------ 409
19.2.4. Low Voltage Power Supply Board ------------- 409
19.2.5. ADF Sensor Board -------------------------------- 409

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KX-MB1500UC/KX-MB1520UC/KX-MB1530UC

1. Before servicing, unplug the AC power cord to prevent an electric shock.
2. When replacing parts, use only the manufacturer's recommended components.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent

the customer from being exposed to shock hazards.

• Repair service shall be provided in accordance with repair technology information such as service manual so as to pre-

1. When repair services are provided, neither the products nor their parts or members shall be remodeled.
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.

• ICs and LSIs are vulnerable to static electricity.

1. Cover the plastic part's boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on the worktable.
4. Do not touch the IC or LSI pins with bare fingers.

For safety, before closing the lower cabinet, please make sure of the following precautions.

1. The earth lead is fixed with the screw.
2. The AC connector is connected properly.

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KX-MB1500UC/KX-MB1520UC/KX-MB1530UC

Be careful not to let your hair, clothes, fingers, accessories, etc., become caught in any moving sections of the unit.
The moving sections of the unit are the rollers and a gear. There is a separation roller and a document feed roller which are rotated
by the document feed motor. A gear rotates the two rollers. Be careful not to touch them with your hands, especially when the unit
is operating.

All the electrical sections of the unit supplied with AC power by the AC power cord are live.
Never disassemble the unit for service with the AC power supply plugged in.
CAUTION:

AC voltage is supplied to the primary side of the power supply unit. Therefore, always unplug the AC power cord before disas-
sembling for service.

Electrical charges accumulate on a person. For instance, clothes rubbing together can damage electric elements or change their
electrical characteristics. In order to prevent static electricity, touch a metallic part that is grounded to release the static electricity.
Never touch the electrical sections such as the power supply unit, etc.

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KX-MB1500UC/KX-MB1520UC/KX-MB1530UC

In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that con-
tains lead.

We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin, (Sn),
Silver, (Ag), and Copper, (Cu).

This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder although, with some precautions, standard Pb solder can also be used.

• PbF solder has a melting point that is 50

 ~ 70 F, (30 ~ 40C) higher than Pb solder. Please use a soldering iron with tempera-

ture control and adjust it to 700

 ± 20 F, (370 ± 10C). In case of using high temperature soldering iron, please be careful not to

heat too long.

• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100

F, (600C).

• If you must use Pb solder on a PCB manufactured using PbF solder, remove as much of the original PbF solder as possible and

be sure that any remaining is melted prior to applying the Pb solder.

• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the

opposite side (See figure, below).

There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper,
(Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi). Please check the manufac-
turer’s specific instructions for the melting points of their products and any precautions for using their product with other 
materials. 
The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.