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HT-SB32D

 – 1

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

[1]  Safety Precaution for Service Manual...........1-1
[2]  Important Service Notes (for U.K only) .......1-1
[3]  Specifications ..............................................

...... 1-2

[4]  Name Of Parts.............................................

...... 1-3

[1]  Version Check.............................................. 2-1
[2]  NFC Tag writing procedure ......................... 2-2

[1]  Disassembly ................................................ 3-1

[1]  Voltage......................................................... 4-1

[1]  Function Table of IC..................................... 5-1

[1]  Block Diagram ............................................. 6-1

[1]  Notes On Schematic Diagram ..................... 7-1
[2]  Type Of Transistor And LED ........................ 7-1
[3]  Schematic Diagram ..................................... 7-2
[4]  Chart Of Connecting Wires.......................... 7-6
[5]  Wiring Side Of PWB .................................... 7-7

No. S7412HTSB32DH

SHARP CORPORATION

Parts marked with " 

 " are important for maintaining the safety of the set. Be sure to replace these parts with

specified ones for maintaining the safety and performance of the set.

• In the interests of user-safety the set should be restored

to  its  original  condition  and  only  parts  identical  to  those
specified be used.

RRMCG

A322AW

SA

2

HT-SB32D

i

Example:

Indicates lead-free solder of tin, silver and copper.

Lead-free wire solder for servicing

When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional

lead wire solder may cause damage or accident due to cracks.

As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend 

you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering 

bit, contact our service station or service branch in your area.

As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead

solder by 40°C, and as it has poor solder wet ability, you may be apt to keep the soldering bit in contact with the 

PWB for extended period of time. However, since the land may be peeled of for the maximum heat-resistance 

temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady 

soldering condition. 

Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn 

on and off the power of the bit as required. If a different type of solder stays on the tip of the soldering bit, it is

alloyed with lead-free solder. Clean the bit after every use of it.

When the tip of the soldering bit is blackened during use, file it with steel wool or fine sand paper.

Be careful when replacing parts with polarity indication on the PWB silk.

"MAIN, DISPLAY A, DISPLAY B PWB" of this model employs lead-free solder. The LF symbol indicates lead-

free solder, and is attached on the PWB and service manuals. The alphabetical character following LF shows

the type  of lead-free solder.

PWB-A 

92LPWB9134MANS 

MAIN

PWB-B 

92LPWB9134DPLS 

DISPLAY A (B1) / DISPLAY B (B2)

HT-SB32D

1 – 1

Setting of Withstanding Voltage Tester and set.

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Withstanding Voltage Tester

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3,000 VRMS

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Set current (Cutoff current)

4 mA

Unit
Judgment
OK: The “GOOD” lamp lights.

NG: The “NG” lamp lights and the buzzer sounds.

PROBE

AC

OUT

AC/DC

ADAPTOR

SHORT-CIRCUIT

AC POWER

SUPPLY CORD

CONNECT THE PROBE

TO SHELL OF DC CONNECTOR

WITHSTANDING

VOLTAGE TESTER

Before returning the unit to the customer after completion of a repair or adjustment it is necessary for the following withstand voltage 

test to be applied to ensure the unit is safe for the customer to use.

HT-SB32D

1 – 2

Power on: 10W

Power standby: 0.4 W (*1)

Power standby: <2 W (*2)

DC IN 19V    3.42A: AC/DC adaptor

(AC 100 - 240 V ~ 50/60 Hz)

Total 60 W

RMS: 30 W (10% T.H.D.)

RMS: 24 W (1% T.H.D.)

2-way Speaker System

5.7cm Woofer

2.5cm Soft Dome 

Width: 940mm

Height: 73mm

Depth: 83mm

2.3 kg (5.1 lbs.)

Analog input (AUDIO IN): 

Stereo mini socket Ø 3.5mm 

500mV / 47kohms

2.400GHz - 2.480GHz

A2DP (Advanced Audio

Distribution Profile), AVRCP

(Audio/Video Remote Control

Profile)

Bluetooth 2.1 +EDR

Optical digital output (OPTICAL):

Square type x 1

As part of our policy of continuous improvement, SHARP reserves

the right to make design and specification changes for product

improvement without prior notice. The performance specification

figures indicated are nominal values of production unit. There may

be some deviations from these values in individual unit.

(*1): This  power  consumption  value  is  obtained  when  the sound bar

is in low power consumption mode.

(*2): This power consumption value is obtained in the Bluetooth Standby mode.