HT-SB60 (serv.man4) - Sharp Audio Service Manual (repair manual)

HT-SB60

 – 1

CHAPTER 1. GENERAL DESCRIPTION
[1]  Safety Precaution For Service Manual ........

...... 1-1

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

...... 1-1

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

...... 1-2

CHAPTER 2. ADJUSTMENTS
[1] Test 

Mode .................................................... 2-1

[2]  Abnormal detection distinction at DEMO 

Indicator (LED Red) ..................................... 2-2

[3]  Manual pairing between the Amplifier and

Subwoofer.................................................... 2-3

CHAPTER 3. MECHANICAL DESCRIPTION
[1] Disassembly ................................................ 3-1

CHAPTER 4. CIRCUIT DESCRIPTION
[1]  Waveform Of Wireless Transmission ........... 4-1
[2] Voltage......................................................... 4-2

CHAPTER 5. FLOWCHART
[1] Troubleshooting ........................................... 5-1

CHAPTER 6. MAJOR PART DRAWING
[1]  Function Table of IC ..................................... 6-1
[2] FL 

Display .................................................. 6-10

CHAPTER 7. DIAGRAMS
[1]  Main (TX) & Subwoofer (RX) 

Block Diagram.............................................. 7-1

CHAPTER 8. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1]  Notes On Schematic Diagram ..................... 8-1
[2]  Type Of Transistor And LED ........................ 8-1
[3] Schematic 

Diagram ..................................... 8-2

[4]  Chart Of Connecting Wires.......................... 8-8
[5]  Wiring Side Of PWB .................................... 8-9

No. S8232HTSB60HE

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.

HT-SB60

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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 par ts 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/AMPLIFIER, DISPLAY,  SUBWOOFER, REGULATOR, S M P S   ( A M P L I F I E R ) ,   SMPS  (SUBWOOFER), 
HDMI, TRANSMIT, RECEIVE 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

92LPWB8696MANS

MAIN/AMPLIFIER (A1), DISPLAY (A2), SUBWOOFER (A3), REGULATOR (A4)

PWB-B

RUiTZA069AWZZ

SMPS (AMPLIFIER)

PWB-C

RUiTZA070AWZZ

SMPS (SUBWOOFER)

PWB-D

92LPWB8695HDMS

HDMI

PWB-E

RUiTZA082AWZZ

TRANSMIT

PWB-F

RUiTZA078AWZZ

RECEIVE

i

HT-SB60

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WARNING
This unit contains no user serviceable parts. Never remove covers unless qualified to do so.
This unit contains dangerous voltages, always remove mains plug from the socket before any service 
operation and when not in use for a long period.

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.

Setting of Withstanding Voltage Tester and set.

Set name

set value

Withstanding Voltage Tester
Test voltage

4,240 VPEAK
3,000 VRMS

Set time

6 secs

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

UNIT

SHORT-CIRCUIT
AC POWER
SUPPLY CORD

CONNECT THE PROBE

TO SHELL OF AUDIO LINE IN

WITHSTANDING

VOLTAGE TESTER

Power source AC 220 - 240 V ~ 50/60 Hz

Power on: 38 W
Power standby: 0.4 W (*)

HDMI™ (audio/video support up to
1080p) x 1

Power source AC 220 - 240 V ~ 50/60 Hz

33 W

Output power RMS: 150 W (10% T.H.D.)

RMS: 120 W (1% T.H.D.)

Subwoofer system
16 cm (6 - 5/16") woofer 

300 W

150 W

Width: 1385 mm (54 - 1/2")
Height: 73 mm (2 - 7/8")
Depth: 68 mm (2 - 11/16")

3.6 kg (7.92 lbs.)

analogue input (AUDIO IN): x 1
500 mV / 47 kohms 
Optical digital input (OPTICAL):
Square type x 1
HDMI input: (audio/video support up to
1080p) x 2

2 Way speaker system
5.7 cm (2 -1/4") woofer
2.5 cm (1") Soft Dome

160 W

80 W

4 ohms

(*) This power consumption value is obtained when the

sound bar is in low power consumption mode. (Demo
indicator turns off).

Width: 144 mm (5 - 11/16")
Height: 430 mm (16 - 15/16")
Depth: 306 mm (12 - 1/16")

6.1 kg (13.42 lbs.)

RMS: Total 160 watts
RMS: 160 W (80 W + 80 W) (10% T.H.D.)
RMS: 120 W (60 W + 60 W) (1% T.H.D.)

3 ohms

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HT-SB60

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