HT-SL70 (serv.man3) - Sharp Audio Service Manual (repair manual)

Model
HT-SL70 (serv.man3)
Pages
32
Size
3.42 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / Home Theatre
File
ht-sl70-sm3.pdf
Date

View Sharp HT-SL70 (serv.man3) Service Manual online

HT-SL70
 
SOUND BAR HOME
THEATER SYSTEM
SERVICE MANUAL
No. S6116HTSL70HE
PRECAUTIONS FOR USING LEAD-FREE SOLDER
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. MECHANISM DESCRIPTION
[1] Disassembly .................................................. 2-1
CHAPTER 3. MAJOR PART DRAWING
[1]  Function Table Of IC...................................... 3-1
CHAPTER 4. CIRCUIT DESCRIPTION
[1] Voltage .......................................................... 4-1
CHAPTER 5. DIAGRAM
[1] Block 
Diagram.................................................5-1
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1]  Notes On Schematic Diagram .......................6-1
[2]  Types Of Transistor And LED.........................6-1
[3] Schematic 
Diagram.........................................6-2
[4]  Chart Of Connecting Wires.............................6-5
[5]  Wiring Side Of PWB .......................................6-6
PARTS GUIDE
HT-SL70
MODEL
CONTENTS
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-SL70 Sound Bar Home Theater system consisting of
Sound Bar and Subwoofer.
[For Europe, U.K.]
HT-SL70
 – i –
PRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
Example:
Indicates lead-free solder of tin, silver and copper.
Lead-free wire solder for servicing
Ref No.
Description
Parts No.
"MAIN, SMPS, HDMI PWB" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and 
is attached on the PWB and ser vice manuals. The  alphabetical character following LF shows the type  of 
lead-free solder.
2. Using lead-free wire solder
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.
3. Soldering
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 confir m 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.
PWB-A 92LPWB8267MANS MAIN
PWB-B RUiTZA041AW01  SMPS
PWB-C 92LPWB8131HDMS HDMI
HT-SL70
 –2
CHAPTER 1GENERAL DESCRIPTION
[3]
 Specifications
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.
General
Soundbar speaker
Subwoofer
[2] Important Service Notes (for U.K. only)
[1]  Safety Precaution For Service Manual
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
consumption
Power On: 40 W
Power Stand-by: Below 1 W
Output power RMS: Total 200 Watt
Front Left/Right:
RMS: 100W (50W + 50W) (10% T.H.D.)
RMS: 70W (35W + 35W) (1% T.H.D.)
Subwoofer:
RMS: 100W (10% T.H.D.)
RMS: 100W (1% T.H.D.)
Output
terminal
HDMI™ (with Audio Return Channel)
output: (audio/video support to 1080p) 
x 1
Input 
terminal
Analog input (Audio in): 
Stereo mini socket Ø 3.5 mm
Input impedance: 33 kohms
HDMI input: (audio/ video support to
1080p) x 1
Type
Full Range speaker system
2.2 x 11.5 cm (7/8" x 4-1/2") 
Full Range
Maximum
input power
100 W/CH
Rated input 
power
50 W/CH
Impedance
3 ohms/CH (4 pieces parallel)
HORIZONTAL  SETTING
46" 
Dimensions
Width: 1071 mm (40 - 3/16") 
Height: 26 mm (1 - 1/32") 
Depth: 50 mm (1 - 31/32")
Weight
0.85 kg (1.85 lbs.)
52" 
Dimensions
Width: 1204 mm (47 - 13/32") 
Height: 26 mm (1 - 1/32") 
Depth: 50 mm (1 - 31/32")
Weight
0.9 kg (1.96 lbs.)
VERTICAL SETTING
46" 
Dimensions
Width: 160 mm (6 - 5/16") 
Height: 706 mm (27 - 13/16") 
Depth: 160 mm (6 - 5/16")
Weight
0.8 kg (1.76 lbs.)/each
52" 
Dimensions
Width: 160 mm (6 - 5/16") 
Height: 782 mm (30 - 13/16") 
Depth: 160 mm (6 - 5/16")
Weight
0.8 kg (1.76 lbs.)/each
Type
Subwoofer system 
16 cm (6 - 5/16") woofer
Maximum 
input power
200 W
Rated input 
power
100 W
Impedance
4 ohms
Dimensions
Width: 115 mm (4 - 1/2")
Height: 422 mm (16 - 5/8")
Depth: 307 mm (12 - 1/16")
Weight
4.50 kg (9.92 lbs.)
1 – 1
HT-SL70
 – 2
[4] Names Of Parts
Sound Bar
1. Left Front Speaker
2. Right Front Speaker
3. Bass Reflex Duct
4. Right Front Speaker Terminal (Red/Black)
5. Left Front Speaker Terminal (White/Black)
Subwoofer
1. Stand-by Indicator
2. Bass Reflect Duct
3. Woofer
4. HDMI (TV ARC) Output Terminal
5. HDMI Input Terminal
6. AC Power Lead
7. Speaker Terminal
8. Audio In (TV) Terminal
R
L
3
5
4
3
1
2
FRONT VIEW
REAR VIEW
8
7
2
3
6
5
4
ACTIVE SUBWOOFER SYSTEM
HT-SL70
1
FRONT VIEW
REAR VIEW
1 – 2
HT-SL70
2 – 1
CD-ES700/CD-ES77
CD-ES700/CD-ES77
Service Manual
CD-ES700/CD-ES77
Market
E
 
CHAPTER 2. MECHANISM DESCRIPTION
[1] Disassembly
Caution On Disassembly
Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.
2. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were before disassembling.
Figure 3
Figure 4
Figure 2
SMPS PWB
HDMI PWB
(E1) x 4
M3 x 8mm
Main PWB
(C2) x 2
(C1) x 4
Special Screw
(D1) x 1
Special Screw
(B3) x 2
Special Screw
Main Chassis
STEP
FIGURE
PROCEDURE
REMOVAL
1
Main Chassis
1. Screw.........................
2. Screw.........................
3. Socket........................
(A1)x5
(A2)x4
(A3)x1
1
1
2
3
SMPS PWB
1. Screw.........................
2. Socket........................
(C1)x4
(C2)x2
3
4
Main PWB
1. Screw......................... (D1)x1
3
5
HDMI PWB
1. Screw......................... (E1)x4
4
6
Subwoofer
1. Net Frame Ass'y ........
2. Screw.........................
(F1)x1
(F2)x4
5
2
Rear Panel
with HDMI PWB
1. Screw.........................
2. Screw.........................
3. Screw.........................
4. Socket........................
5. AC Cord.....................
(B1)x4
(B2)x2
(B3)x2
(B4)x1
(B5)x1
2
2
3
2
2
CAUTION:
TO REMOVE SPEAKER UNIT, PRESS THESE LOCKING TABS
TO RELEASE SPEAKER WIRES. 
SPEAKER UNIT
LOCKING TAB
LOCKING TAB
SPEAKER
WIRE
Wooden Box Ass’y
(B5) x 1
Main Chassis
(A3) x 2
HDMI PWB
Subwoofer
(F2) x 4
M4 x 16mm
Figure 5
(F1) x 1
Net Frame Ass’y
(B1) x 4
M3 x 6mm
(B2) x 2
M3 x 10mm
(B4) x 1
SMPS PWB
Rear Panel
Main PWB
Wooden Box Ass’y
(A1) x 5
M4 x 10mm
Rear Panel
(A2) x 4
M3.5 x 12mm
Figure 1
HT-SL70
3 – 1
CHAPTER 3. MAJOR PART DRAWING
[1] Function Table Of IC
IC501  RH-IXA318AW00 : System Microcomputer (IXA318AW) (1/3)
Pin
No.
NAME
INPUT / 
OUTPUT
FORM
SOFT
PULL-UP
FUNCTION OUTLINE
PORT_TYPE
1
SCL
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
I2C SERIAL CLOCK BUS LINE
P3_5 / SCL / SSCK / (TRCIOD)
2
DIR_CKSEL
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
Selection of system clock source, 
Low: PLL (VCO) clock, High: XTI clock
P3_4 / TRAO / SSO / RXD1 / (TXD1)
3
RESET
INPUT
INPUT
OFF
Reset Input. Active "L"
For MICOM reflash. Need 10k Pull-up
RESET
4
NO USE
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
Connect to VCC with 10k
 resistor
XOUT / XC OUT / P4_7
5
GND
---
---
OFF
GND
VSS / AVSS
6
NO USE
INPUT
CMOS INPUT/ 
OUTPUT
OFF
Connect to VCC with 10k
 resistor
XIN / XCIN / P4_6
7
VCC
---
---
OFF
Supply input to micom (3.3V)
VCC / AVCC
8
MODE
INPUT
INPUT
OFF
Connect to VCC with 10k
 resistor
MODE
9
SYS_PROTECT
INPUT
INPUT
OFF
POWER SUPPLY ABNORMAL DETECTION
H : NORMAL , L : ABNORMAL
P3_4 / INT0 / (RXD1)
10
NO USE
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
Set 'L'
P1_7 / TRAIO / INT1
11
HDMI_INT
INPUT
CMOS INPUT/ 
OUTPUT
OFF
HDMI MODULE INTERRUPT DETECTION
H -> L
P3_6 / (TRD1) / (RXD1) / (INT1)
12
HDMI_RST
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
HDMI MODULE RESET CONTROL
H : NORMAL , L : RESET
P3_1 / TRBO
13
AMP_OTW
INPUT
CMOS INPUT/ 
OUTPUT
OFF
AMPLIFIER OVERTEMPERATURE WARNING 
DETECTION
H : NORMAL , L : ABNORMAL
P5_4 / TRCIOD
14
AMP_SD
INPUT
CMOS INPUT/ 
OUTPUT
OFF
AMPLIFIER SHUTDOWN DETECTION
H : NORMAL , L : ABNORMAL
P5_3 / TRCIOC
15
DIR_RST
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
DIR RESET CONTROL
H : NORMAL , L : RESET
P1_6 / CLK0 / (SSI)
16
DIR_ERROR
INPUT
CMOS INPUT/ 
OUTPUT
OFF
DIR ERROR DETECTION
H : ERROR , L : NORMAL
P1_5 / RXD0 / (TRAIO) / (INT1)
17
DIR_AUDIO
INPUT
CMOS INPUT/ 
OUTPUT
OFF
DIR CHANNEL-STATUS DATA INFORMATION
H : OTHER , L : LINEAR PCM
P1_4 / TXD0
18
DIR_FSOUT0
INPUT 
CMOS INPUT/ 
OUTPUT
OFF
DIR CALCULATED SAMPLING FREQUENCY OUT-
PUT 0
P1_3 / KI3 / AN11 / (TRBO)
19
DIR_FSOUT1
INPUT 
CMOS INPUT/ 
OUTPUT
OFF
DIR CALCULATED SAMPLING FREQUENCY OUT-
PUT 1
P1_2 / KI2 / AN10 / TRCIOB
20
VREF
---
---
OFF
Reference Voltage for A/D converter
VREF / P4_2
21
DAP_MUTE
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
DAP MUTE CONTROL
H : OFF , L : ON
P1_1 / KI1 / AN9 / TRCIOA / 
TRCTRG
22
DAP_PWN
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
DAP POWER DOWN CONTROL
H : NORMAL , L : POWER DOWN
P1_0 / KI0 / AN8
23
DAP_RST
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
DAP RESET CONTROL
H : NORMAL , L : RESET
P3_3 / INT3 / SSI / TRCCLK
24
SDA
INPUT  /
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
I2C SERIAL DATA BUS LINE
P3_4 / SDA / SCS / (TRCIOC)
25
DC_RELAY
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
DC RELAY CONTROL
H : ON , L : OFF
P0_7 / AN0
26
NO USE
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
P0_6 / AN1
HT-SL70
3 – 2
IC501  RH-IXA318AW00 : System Microcomputer (IXA318AW) (2/3)
Pin
No.
NAME
INPUT / 
OUTPUT
FORM
SOFT
PULL-UP
FUNCTION OUTLINE
PORT_TYPE
27
LED RED
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
LED indicator.
STANDBY condition: H
P0_5 / AN2 / CLK1
28
LED BLUE
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
LED indicator.
ON condition: H
P0_4 / AN3 / TREO
29
HDMI_CE2
OUTPUT 
CMOS INPUT/ 
OUTPUT
OFF
HDMI Module Supply Control 1.8V
P0_3 / AN4
30
AREA
INPUT 
CMOS INPUT/ 
OUTPUT
OFF
H' : SL50
'L' :SL-70
P0_2 / AN5
31
KEY
INPUT 
CMOS INPUT/ 
OUTPUT
OFF
When "L": Enter version check mode
During version check mode "L" : CLEAR ALL 
P0_1 / AN6
32
LEV_DET
INPUT 
CMOS INPUT/ 
OUTPUT
OFF
Audio signal level detection
P0_0 / AN7 / (TXD1)
HT-SL70
3 – 3
IC501  RH-IXA318AWZZ : System Microcomputer (IXA318AW) (3/3)
Figure 3-1 Block Diagram of IC
LE
V
_D
E
T
KEY
AR
EA
HDM
I_
C
E
2
LE
D B
LUE
LE
D RE
D
NO US
E
DC_
R
EL
AY
32
31
30
29
28
27
26
25
P
0_0 / A
N
7 / (T
X
D
1)
P0
_1
 / AN
6
P0
_2
 / AN
5
P0
_3
 / AN
4
P0
_4
 / AN
3 /
 T
R
EO
P
0_5 / A
N
2 / CLK
1
P0
_6
 / AN
1
P0
_7
 / AN
0
SCL
1
)
C
O
I
C
R
T
S
C
S
 /
 
A
D
S
 /
 
4
_
3
P
)
D
O
I
C
R
T
K
C
S
S
 /
 
L
C
S
 /
 
5
_
3
P
24
SDA
DIR_CKSEL
2
P3_4 / TRAO / SSO / RXD1 / (TXD1)
P3_3 / INT3 / SSI / TRCCLK 23
DAP_RST
RESET
3
RESET
P1_0 / KI0 / AN8 22
DAP_PWN
NO USE
4
G
R
T
C
R
T
 /
 
A
O
I
C
R
T
 /
 
9
N
A
 /
 
1
I
K
 /
 
1
_
1
P
7
_
4
P
 /
 
T
U
O
 
C
X
 /
 
T
U
O
X
21
DAP_MUTE
GND
5
VSS / AVSS
VREF / P4_2 20
VREF
NO USE
6
XIN / XCIN / P4_6
P1_2 / KI2 / AN10 / TRCIOB 19
DIR_FSOUT1
VCC
7
VCC / AVCC
P1_3 / KI3 / AN11 / (TRBO) 18
DIR_FSOUT0
MODE
8
MODE
P1_4 / TXD0 17
DIR_AUDIO
P
3_4 / INT
0 / (
R
X
D
1)
P
1_7 / T
R
A
IO / IN
T1
P3
_6
 / (
TR
D
1)
 / 
(R
X
D
1) / (IN
T1)
P
3_1 / TR
B
O
P5
_4
 / T
R
C
IO
D
P5
_3
 / T
R
C
IO
C
P
1_6 / CLK
0 / (
S
S
I)
P
1_
5 /
 RX
D0
 / 
(TR
A
IO) / (IN
T1)
9
10
11
12
13
14
15
16
SYS_
PR
O
TEC
T
NO US
E
HDM
I_I
NT
HDM
I_
R
S
T
AM
P_
O
TW
AM
P_
SD
DIR_
RS
T
DIR_
E
R
ROR
SHARP
IXA318A
HT-SL70
4 – 1
CHAPTER 4. CIRCUIT DESCRIPTION
[1] Voltage
HT-SL70
4 – 2

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