Sharp SD-AT50 User manual

SD-AT50
No. ?????????????
CONTENTS Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)....................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 2
NAMES OF PARTS ........................................................................................................................................................... 3
DISASSEMBLY.................................................................................................................................................................. 5
ADDITIONAL DESCRIPTIO............................................................................................................................................... 7
ADJUSTMENT ................................................................................................................................................................... 8
DESCRIPTION OF CIRCUIT FOR 1-BIT UNIT ................................................................................................................. 8
TO CHECK AND CANCEL PROTECT CIRCUIT DETECTION LINE................................................................................ 9
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 10
TYPES OF TRANSISTOR AND LED............................................................................................................................... 10
BLOCK DIAGRAM ........................................................................................................................................................... 11
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 20
VOLTAGE ........................................................................................................................................................................ 45
WAVEFORMS OF 1-BIT CIRCUIT .................................................................................................................................. 46
FUNCTION TABLE OF IC................................................................................................................................................ 47
FL DISPLAY..................................................................................................................................................................... 51
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
SERVICE MANUAL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
1-BIT DIGITAL HOME THEATER
MODEL SD-AT50

SD-AT50
– 2 –
SPECIFICATIONS
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the
following safety checks.
1. Inspect all lead dress to make certain that leads are not
pinchedorthathardwareisnotlodgedbetweenthechassis
and other metal parts in the audio product.
2. Inspect all protective devices such as insulating materials,
cabinet,terminalboard,adjustmentandcompartmentcovers
or shields, mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage
current in the following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5 kohm, 10 watt resistor
paralleled by a 0.15 µF capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher,
sensitivity to measure the AC voltage drop across the
resistor (See diagram).
* Connect the resistor connection to all exposed metal parts
havingareturnpathtothechassis(antenna,metalcabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.
AllcheckmustberepeatedwiththeAClinecordplugconnection
reversed.
Anyreadingof0.3voltRMS(thiscorrespondsto0.2milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 µF
1.5 kohms
10 W
VTVM
AC SCALE
AV control unit
Dimensions Width: 8-1/2" (215 mm)
Height: 2-5/16" (58 mm)
Depth: 10-5/16" (261 mm)
Weight 2.9 lbs. (1.3 kg)
Audio input terminals Optical digital input (AUX): Square type 1
Coaxical digital input (DVD/CD): RCA type 1
Analog input (DVD/CD): RCA type 1 pair (L/R)
Analog input (TV): RCA type 1 pair (L/R)
Analog input (VCR): RCA type 1 pair (L/R)
Analog input (AUX): RCA type 1 pair (L/R)
Audio output terminal Headphones: 16 - 50 ohms (recommended: 32 ohms)
Other terminals System control 3
Frequency range FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Subwoofer/amplifier unit
Front/center/surround speakers
Power source AC 120 V, 60 Hz
Power consumption 80 W
Dimensions Width: 10-1/4" (260 mm)
Height: 14-11/16" (373 mm)
Depth: 16-5/8" (421 mm)
Weight 21.8 lbs. (9.9 kg)
Power output (FTC) 40 watts minimum RMS per channel into 4 ohms from 20
Hz to 20 kHz, 1 % total harmonic distortion
Rated power output Front: 50 W + 50 W, Center: 50 W,
Surround: 50 W + 50 W (4 ohms at 1 kHz)
Subwoofer: 50 W (4 ohms at 100 Hz)
Amplification system 2.8224MHz (64fs) 1-bit switching (remarks: fs = 44.1 kHz)
A/D noise shaping 7th-order (delta - sigma) modulation
Terminals Front speakers, Center speaker, Surround speakers: 4
ohms
System control 2
Subwoofer Type 6-1/2"(16 cm) woofer(magnetic
shield)
Maximum input power 100 W
Rated input power 50 W
Impedance 4 ohms
Type Full range speaker system (magnetic shield)
3-1/8" (8 cm) speaker
Maximum input power 100 W
Rated input power 50 W
Impedance 4 ohms
Dimensions Width: 3-3/4" (95 mm)
Height: 4-1/2" (114 mm)
Depth: 4-1/8" (104 mm)
Weight 1.5 lbs. (0.7 kg)/each

– 3 –
SD-AT50
NAMES OF PARTS
Subwoofer/amplifier unit
1. Subwoofer
2. Bass Reflex Duct
3. System Connection Jack (to AV control unit)
4. Speaker Terminals
5. System Connection Jack (to AV control unit)
6. AC Power Input Jack
7. Cord Holder
Satellite speaker 5
Front speaker 2: magnetically shielded
Center speaker 1: magnetically shielded
Surround speaker 2: magnetically shielded
1. Speaker
2. Speaker Terminals
3. Mounting Holes for Stand or Bracket (Optionally available)
Using antislip speaker cushions:
You can install satellite speakers either vertically or horizontally.
Affix the cushions (supplied) to the bottom of the speakers to prevent them from slid-
ing or falling due to vibration.
A sheet of speaker cushions (20 pcs.) is supplied with this product. Use 4 cushions
per speaker.
3
4
5
6
7
21
123
Front Back Bottom
Side
(Vertical position) (Horizontal position)
AV control unit
1. Timer Play Indicator
2. Sleep Indicator
3. FM Stereo Mode Indicator
4. FM Stereo Receiving Indicator
5. Audio Signal Indicators/Speaker Indicators
6. On/Stand-by Button
7. Timer Set Indicator
8. Function Button
9. Digital/Analog Input Select or Tuner Band Select Button
10. Volume Up and Down Buttons
11. Remote Sensor
12. Power Indicator
13. Sound Mode Indicators
14. Headphone Jack
15. System Connection Jack (to DVD player)
16. Audio Digital Input Jack
17. Coaxial Digital Audio Input Jack
18. Audio Input Jacks
19. System Connection Jacks (to subwoofer/amplifier unit)
20. AM Loop Antenna Terminal
21. Antenna Ground Terminal
22. FM 75 Ohms Antenna Jack
7 8 9 10
11 13 14
1 2 3 4 5
(1)
(7) (8)
(2) (3) (4) (5) (6)
(9) (
10 )( 11 )( 12 )( 13 )
15 16 17 18 20 21 22
19
Display
Front
Back
12
6
(1) Left Front Speaker Indicator (8) Subwoofer Indicator
(2) Front Left Signal Indicator (9) Left Surround Speaker Indicator
(3) Center Speaker Indicator (10) Surround Left Signal Indicator
(4) Center Signal Indicator (11) Surround Monaural Signal
Indicator
(5) Front Right Signal Indicator (12) Surround Right Signal Indicator
(6) Right Front Speaker Indicator (13) Right Surround Speaker Indicator
(7) Low Frequency Effect Indicator

SD-AT50
– 4 –
[Front]
Remote control
1. Remote Control Transmitter
2. On/Stand-by Button
3. CD/MP3 Disc Play Mode Select Button
4. TV On/Stand-by Button
5. TV Volume Up and Down Buttons
6. TV Input Select Button
7. DVD Frame Advance, Disc Pause Button
8. Disc Repeat Button
9. Disc Fast Reverse, Tuner Preset Down Button
10. DVD Chapter Skip, CD/MP3 Disc Track Down or
Tuning Down Button
11. Enter Button
12. Volume Up and Down Buttons
13. Return Button
14. DVD Zoom Button
15. TV Display Select Button
16. Timer Button
17. Sound Mode Select Buttons
18. DVD Audio Language Select or
CD Audio Output Select Button
19. Display Brightness Select or Clock Display Button
20. TV Channel Select Buttons
21. Disc Stop Button
22. Disc Play Button
23. Digital/Analog Input Select or Tuner Band Select Button
24. Function Button
25. Disc Fast Forward, Tuner Preset Up Button
26. DVD Chapter Skip, CD/MP3 Disc Track Up or
Tuning Up Button
27. Cursor Button
28. Disc A - B Repeat Button
29. DVD Top Menu Button
30. DVD Menu Button
12
11
1
2
3
4
5
6
8
7
9
10
13
14
15
16
17
20
19
21
22
23
24
25
28
29
30
26
27
18
Buttons with " " mark in the illustration can be operated on the remote control
only.
[Back]
1. DVD Angle Button
2. DVD Subtitle Button
3. Disc A - B Repeat Button
4. DVD Frame Advance, Disc Pause Button
5. Direct Button
6. CD/MP3 Disc Play Mode Select Button
7. Clear Button
8. DVD Initial Setting Button
9. Amplifier Initial Setting Button
10. Timer Button
11. Return Button
12. DVD Audio Language Select or CD Audio Output Select Button
13. Black Level Select Button
14. Disc Stop Button
15. Disc Play Button
16. Direct Number Buttons
17. Enter Button
18. Cursor Buttons
19. Sliding Cover
10
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
18
19
17

– 5 –
SD-AT50
1 Top Cabinet 1. Screw ...................... (A1) x5 5-1
2 Bottom Cabinet 1. Leg Cushion............ (B1) x4 5-1
2. Screw ...................... (B2) x4
3. Screw ...................... (B3) x3
3 Rear Panel/ 1. Screw ...................... (C1) x9 5-2
Tuner Unit 2. Flat Cable ............... (C2) x1
4 DSP PWB 1. Screw ...................... (D1) x2 5-2
2. Top Support Bracket ...... (D2) x1
3. Screw ...................... (D3) x2 5-3
4. PWB Holder ............ (D4) x1
5. Flat Cable ............... (D5) x3
5 Main PWB 1. Screw ...................... (E1) x4 5-3
6 Front Panel 1. Screw .......................(F1) x4 5-3
2. Hook.........................(F2) x2
7 Display PWB 1. Screw ...................... (G1) x6 5-4
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.Takeoffnylon bands or wire holders wheretheyneedto
beremovedwhendisassemblingtheunit.Afterservicing
theunit,besureto rearrange the leads where they were
before disassembling.
3. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
Figure 5-3
STEP REMOVAL PROCEDURE FIGURE
Figure 5-2
AV Control Unit
Figure 5-4
Figure 5-1
(A1)x5
ø 3x8mm
Front Panel
Bottom Cabinet
Top Cabinet
(B3)x3
ø 3x8mm
(B2)x4
ø 2x6mm
(B1)x4
(D1)x2
ø 3x8mm
(C1)x2
ø 3x8mm
(C1)x7
ø 3x8mm
Front Panel
Bottom Cabinet
Rear Panel
Tuner Unit
(D2)x1
(C2)x1
DSP PWB
(F1)x2
ø 3x8mm
(D3)x2
ø 3x10mm
(F1)x2
ø 3x8mm
(E1)x2
ø 3x10mm
(F2)x1
(D5)x2 (D5)x1
(F2)x1
(D4)x1
Main PWB
DSP PWB
Front
Panel
Lug Wire
Push
(E1)x2
ø 3x10mm
(G1)x6
ø3x10mm
Display PWB
Front Panel

SD-AT50
– 6 –
Figure 6-1
Figure 6-2
Figure 6-3
Figure 6-4
Figure 6-5
1 Rear Cover 1. Screw .................... (A1) x17 6-1
2 Subwoofer Stand 1. Screw ...................... (B1) x8 6-1
3 Amp. Unit 1. Screw ...................... (C1) x5 6-2
2. Socket ..................... (C2) x2
4 Power PWB 1. Screw ...................... (D1) x4 6-2
2. Socket ..................... (D2) x5 6-3
5 Limit PWB 1. Screw ...................... (E1) x2 6-3
6 1-Bit Amp. Unit 1. Screw .......................(F1) x7 6-3
7 1-Bit Amp. Cover 1. Screw .................... (G1) x15 6-4
8 1-Bit Amp. PWB 1. Screw ...................... (H1) x6 6-5
9 Subwoofer 1. Screw ....................... (J1) x4 7-1
STEP REMOVAL PROCEDURE FIGURE
Subwoofer/Amplifier Unit
(A1)x4
ø3x16mm
(A1)x1
ø3x12mm
(A1)x3
ø3x8mm
(A1)x2
ø3x8mm (A1)x5
ø3x12mm
(A1)x2
ø3x16mm
(B1)x4
ø4x16mm
(B1)x4
ø4x16mm
Rear Cover
Front Panel
Subwoofer
Stand
(C2)x2
(D1)x4
ø 3x8mm
(C1)x5
ø 3x20mm
Power PWB
Subwoofer
Box
(F1)x2
ø 3x8mm
(E1)x2
ø 3x8mm
(D2)x1
(D2)x1
(D2)x2
(D2)x1
(F1)x1
ø 3x8mm
(F1)x1
ø 3x8mm
(F1)x1
ø 3x8mm
(F1)x1
ø 3x8mm
(F1)x1
ø 3x8mm
Power PWB
Limit PWB
1-Bit Amp. Unit
(G1)x3
ø3x12mm (G1)x3
ø3x12mm
(G1)x1
ø3x12mm
(G1)x3
ø3x12mm
(G1)x2
ø3x12mm
(G1)x1
ø3x12mm
(G1)x1
ø3x12mm
(G1)x1
ø3x8mm
1-Bit Amp. Cover
Washer
Washer
(H1)x3
ø 3x8mm
1-Bit Amp. PWB
(H1)x3
ø 3x8mm
Be careful of the
silicon grease.

– 7 –
SD-AT50
Figure 7-1
Figure 7-2
Subwoofer
(J1)x4
ø4x16mm
Subwoofer
Box
Screwdriver
Front
Panel
Subwoofer
Box
(Note 1)
Wrap a slotted screwdriver with a waste cloth, etc. and insert
it into the gap to remove the front panel. Take great care not
to damage the subwoofer box.
ADDITIONAL DESCRIPTION
Disassembling the Lot 1 (when using the old parts)
Remove the 5 screws on the backside of the top cabinet. Raise the rear end by approx. 10 mm, and then move it backward by
approx. 8 mm. Keep the top cabinet horizontal and raise it right above to remove.
Remove the 4 cushions and the 4 screws and slide it right backward.
Disassembling the Lot 2 (when using the new parts)
Removethe5screwsonthebacksideofthetopcabinet.Raisetherearendbyapprox.10mm,removethehooksofthefrontpanel,
and then move it backward by approx. 8 mm. Keep the top cabinet horizontal and raise it right above to remove.
Removethe4cushionsandthe4screws.Pushdownaroundthecenterofthebottomcabinetwithasteelmeasureorliketoremove
the tab. Slide the bottom cabinet right backward to remove.
Insertasteelmeasureandpushdownthebottom
cabinet to detach the hook.
The top cabinet is removed

SD-AT50
– 8 –
Figure 8-2
ADJUSTMENT
Figure 8-1 OUTPUT OFFSET LEVEL
1-bit amplifier's output offset voltage adjustment
Adjust VRA100, VRA101, VRA200, VRA201, VRA300 and
VRA301 so that the DC voltage between speaker terminals +
and - is set to 0 ±5 mV at AC 120 V.
Electronic
Voltage
SO801
AC 120 V
Set
Output:
SpeakerTerminal
+
-
VR : 0
Input : AUX
HPNLC1347AWSA (Front Panel) —
GCABC1300AWSA (Top Cabinet) —
GCABC1301AWSA (Bottom Cabinet) —
LANGK0336AWFW (Front Support Bracket, Left) —
LANGK0337AWFW (Front Support Bracket, Right) —
HPNLC1380AWSA
(Front Panel) GCABC1315AWSA (Top Cabinet) GCABC1316AWSA (Bottom Cabinet) LANGK0368AWFW (Front Support
Bracket, Left)
LANGK0369AWFW
(Front Support
Bracket, Right)
Old Parts
New Parts
Compatibility of parts
: Compatible
: Not compatible
—: Irrelevant
5
3
1
6
4
2
R-CH Output Offset Adjusument
L-CH Output Offset Adjusument
VRA300 VRA200 VRA100
VRA301
VRA201
VRA101
DESCRIPTION OF CIRCUIT FOR 1-BIT UNIT
(SEE THE WIRING DIAGRAMS ON PAGES 42 AND 43.)
Input section
SignalsfromCNA100arecoupledbyCA100,CA101,CA200,
CA300 and CA301, and then sent into the A/D converter IC
(ICA100, ICA200, ICA300).
modulation 1-bit converter
Signals from the A/D converter IC (ICA100, ICA200, ICA300)
are converted to 1-bit signals and sent differentially. Refer to
thetechnicalmanualofSM-SX100forthedetailsofconversion
to 1-bit signals.
Dead time and level shift
As for the waveform of 1-bit signals sent through the A/D
converterIC(ICA100,ICA200,ICA300),itsrisetimeisdelayed
by 20 nsec ~ 25 nsec compared to the fall time due to RA114
~ RA117, RA214 ~ RA217, RA314 ~ RA317 and CA106 ~
CA109, CA206 ~ CA209, CA306 ~ CA309 and DA104 ~
DA107, and DA304 ~ DA307. This is for reducing loss of the
switchingcircuitdescribedlater.The1-bitsignalsaresentinto
thebufferIC(theANDgateIC)(ICA101,ICA201,ICA301)and
sent as the shaped waveform.
Low-pass filter circuit
1-bit signals switched by the output IC (ICA102, ICA107,
ICA302and ICA307) are converted to analog signals through
the lowpass filter consisting of LA104 ~ LA107, LA204 ~
LA207, LA304 ~ LA307 and CA114 ~ CA117, CA214 ~
CA217, and CA314 ~ CA317. The lowpass filter functions
when a frequency exceeds 20 kHz, and reduces it by approx.
3 dB when it reaches approx. 40 kHz.
Dynamic feedback circuit
The 1-bit signals switched by the output IC (ICA102, ICA107,
ICA302and ICA307) oscillate betweenpositiveandnegative
voltage. After resistance-division, the signals are fed back to
the A/D converter IC (ICA100, ICA200, ICA300) through NF
resistance 75 kohms (RA130 ~ RA133, RA230 ~ RA233,
RA330 ~ RA333). The peak-to-peak voltage reaches approx.
5 V.

– 9 –
SD-AT50
TO CHECK AND CANCEL PROTECT CIRCUIT DETECTION LINE
1: In this model the microcomputer (IC301 or IC701) detects
thefollowingmalfunctionsoncepowerissupplied,andcuts
off power from all the parts except for the circuit driving the
microcomputer.
1 Abnormal drop in the output voltage of each regulator
(below approx. 1.5 V)
Power is cut off instantly without display.
2 Output offset over voltage of the 1-bit amplifier
(above approx. DC 2 V)
Power is cut off after “ER_AP02” is displayed.
3 Mains overvoltage of the 1-bit amplifier
(above approx. DC 5.5 A)
Power is cut off instantly without display.
4 Defects in the cooling fan or its drive circuit
(when stopped)
Power is cut off after “FAN LOCK” is displayed.
2: Criteria for abnormality, and checking and cancelling the
detection line
The criteria:
1 The voltage of pin 91 on IC301 (PROTECT) or pin 19
(PROTECT) on IC701.
2 Thevoltageofpin29 (OFFSET)onIC701:Low(below
approx. 1 V) (abnormal) and High (above approx. 2.5
V) (normal) .
3 The voltage of pin 19 (PROTECT) on IC701.
4 Themotorrotationiscontrolledwhenthevoltageofpin
20 (FAN CHK) on IC701 is below approx. 1 V.
The motor stops when it is above approx. 1 V.
If the voltage of pin 21 (FAN LOCK) on IC701 is not
between approx. 0.21 V and 0.9 V whilst the motor
rotation is controlled, it is judged as abnormal.
Checking and canceling the detection line:
Caution: If the PROTECT/OFFSET detection line is
disconnected in case of 1 , 2 or 3 above, a
protective operation does not function. The
disconnection by output short-circuit of each
regulator may cause the parts or PCBs to burn
outandthereforedonotdisconnectthedetection
line when the cause is not identified.
(Power supply can be detected with an
oscilloscopeorlikeduringapprox.0.5seconds
after an abnormality is found. Note that the
detection would be difficult with a tester as the
voltage rises and falls rapidly.)
11
11
1 Abnormal drop in the output voltage of each regulator
Connect a measuring device (such as an oscilloscope) to
the stabilizing output of the regulator, and turn on the unit.
If the detected voltage is extremely lower than the voltage
on the circuit diagram (below approx. 1.5 V), the regulator
itself or the circuit is defective.
22
22
2 Output offset overvoltage of the 1-bit amplifier
Adjust the voltage of the output offset. If a protective
operation is still activated, QA100 ~ QA103, QA200 ~
QA203 or QA300 ~ QA303 on the 1-bit amplifier could be
defective (the detection circuit of the speaker output DC
voltage).
33
33
3 Mains overvoltage of the 1-bit amplifier
Theunitfunctionsproperlyifpowerissuppliedafterremoving
BIA111 (1-bit amplifier main power supply connector). (No
sound is heard from the speaker.)
* Adjust the output offset voltage after repair.
Ifaprotectiveoperationisstillactivatedevenafterremoving
BIA111,QA413,QA414,QA415,QA410,QA411orQA412
couldbedefective(thedetectionofpowersupplyvoltage).
44
44
4 Defects in the cooling fan or its drive circuit
Connect a measuring device (such as an oscilloscope) to
pin 21 (FANLOCK) on IC701 terminal, and turn on the unit.
Connect the collector of Q822 to GND and make sure the
fan motor rotates properly. If not, check if the motor or fan
isobstructedandthemotoritselfisdefective.Ifalltheabove
arefineandthevoltageofpin21isbelowapprox.0.2Vwith
the collector of Q822 connected to GND, check Q830, its
peripheral circuits or the connection of the fan motor. The
fanmotorcouldbedefectiveifthevoltageofpin21exceeds
approx. 0.91 V right after connecting the collector of Q822
to GND and remains above approx. 0.91 V.

SD-AT50
– 10 –
•Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
•The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
•Parts marked with “ 1” ( ) 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.
NOTES ON SCHEMATIC DIAGRAM
•Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
•Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means pico-farad and the unit of the capacitor
without such a symbol is microfarad. As to electrolytic
capacitor, the expression “capacitance/withstand voltage”
is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
REF. NO DESCRIPTION POSITION
SW1 POWER ON—OFF
SW2 VOLUME UP ON—OFF
SW3 VOLUME DOWN ON—OFF
SW4 DIGITAL/ANALOG ON—OFF
SW5 FUNCTION ON—OFF
TYPES OF TRANSISTOR AND LED
KTA1504 GR
KTC3875 GR
KRA106 S
KRC102 S
KRC104 S
KRC107 S
DS1SS133
D1NL20U
B
(3)
E
(1)
C
(2)
TOP
VIEW
KDS120E
KDS121E
KDS226
TOP VIEW
TOP VIEWTOP VIEW
2SD1616 A
2SK246 GR
KTA1266 GR
KTA1271 Y
KTA1273 Y
KTC2874 B
KTC3199 GR
KTC3203 Y
VIEW
FRONT
E C B
(S)(G)(D)
(1)(2)(3)
1N4004S
KDS160
SFPW56
D5SB60
AC AC
VIEW
FRONT
FRONT
VIEW
3105T1
3105VGT
31URT21
SEL2E10C
SELU2E10
KTC3205 Y
KRA106 M
KRA107 M
KRC102 M
KRC104 M
KRC106 M
KRC107 M

– 11 –
SD-AT50
Figure 11 BLOCK DIAGRAM (1/9)
ANALOG SIGNAL
INPUT
OUTPUT OFFSET
ADJUSTMENT
+5V
ADIC INSIDE
(IX2815AF)
IN NF+
A+5V
D+5V D+5V
OUT+
OUT-NF–
B, S
B, S
B, S
B, S
H-IN L-IN H-IN L-IN
VKK
D+5V
VCC VDD(D+5V)
+POWER
-POWER
+POWER
-POWER
ICA102, ICA107
ICA202, ICA207
ICA302, ICA307
SLA5505M
SWITCHING AUDIO
POWER AMP.
LOW PASS FILTER
LOAD
OFFSET
DETECTION CIRCUIT
NF
+B
A+5V
KIA78M05 KIA78M05
KIA78M05 IN
IN OUT
GND
ICA101, ICA201, ICA301
TC74AC8T
QUAD 2 INPUT AND GATE
OUT
-B
-B +B
-B
GND
GND
+B
D+5V
IN
OUT
GND
REFERENCE VOLTAGE + 6.5 V
-POWER
DEADTIME CONTROL
(6 CH AVAILABLE)
+
–+ –
+
–
ICA100, ICA200, ICA300
IX2815AF
7TH ORDER ∆∑
MODULATION
CONVERSION LSI
ICA401
KIA7805AP
VOLTAGE
REGULATOR
ICA402
KIA7805AP
VOLTAGE
REGULATOR
ICA400
KIA7806AP
VOLTAGE
REGULATOR
OVERCURRENT/ OVERHEAT DETECTION CIRCUIT

SD-AT50
– 12 –
Figure 12 BLOCK DIAGRAM (2/9)
LE
D
LED6
LED5
LED4
LED3
LED2LED1
RMS1
GP1UD271
REMOCON SENSOR 21
LED10
SO1
HEADPHONES
LED9
12345678910 11 12
3
Q8 Q1 Q2
Q3
Q4 Q5
Q6
LCD1
V5OUT V2OUT VLCD VLOUT C1- C1+ VCC GND SDA SCL CS RESET
RXIN
LE
D
LED DRIVER
LED DRIVER
LED
DRIVER
LED DRIVER
LED DRIVER
LED
DRIVER
LED
DRIVER
Q9
LED DRIVER

– 13 –
SD-AT50
Figure 13 BLOCK DIAGRAM (3/9)
LED7
LED6
D5
LED8
ES
CN502A
BACK_LIGHT
STRLED
KEY_1
LCDSDA
LCDSCL
LCDCS
LCDRESET
DTSLED
STDLED
POWERKEY
DDLED
DPLLED
VIRLED
TIMERLED
LED9V
Q5
Q6
Q7
+5V(D)
+3.7V(UN-SWD)
GND(U-COM)
H.P SW
L-CH
GND(A)
R-CH
RXIN
+5V(D)
+3.3V(SWD)
GND(D)
N
R-CH
L-CH
H.P SW
25
24
23
22
21
20
19
18
17
15
13
12
11
10
9
8
7
6
5
4
3
2
1
16
14
SW2~SW5
LED DRIVER
LED DRIVER
D DRIVER
SW1
TO DSP SECTION

SD-AT50
– 14 –
Figure 14 BLOCK DIAGRAM (4/9)
CN501A
JT502
VTR/AUX
TERMINAL
Q528
CN503A
Q502
Q501
JT501
DVD/CD/TV
TERMINAL
IC501
BD3811K1
VOLUME IC
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
17 16 15 14
1234
5
6
7
8
9
10
11
1213
24 23 18
19
20
21
22
41 42 43 44 45 46 47 48 49 50 51 52 64
6362
61
60
59
58
57
56
55
5453
+5V(D)
RIN
LIN
ROUT3
LOUT3
LOUT2
ROUT2
CCB_CE
CCB_DI
AMP_CLK
LOUT1
ROUT1
AMP_SOUT
TUNER_SM
CCB_DO
CCB_CL
FM_STB
AMP_STB
AMP_INT
AMP_SIN
OUTSW
OUTC
OUTSR
_
OUTSR
_
VOL_CL
VOL_DA
S_MUTE
+12V
CONFIG AGND
HP_R HP_L
S_MUTE PROTECT CONFIG VOL_CL VOL_DA
BS_RCH BS_LCH TV_LCH TV_RCH DVDA_LCH DVDA_RCH
TUN_L
TUN_R
VTR_RCH VTR_LCH
AUX
VTR
TV
DVD
R-CH
L-CH
LCH
R-CH R-CH L-CH
L-CH
R-CH
R-CH GND(A) L-CH
GND(U-COM)
+3.7V(UN-SWD)
GND(A)
+9V(A)
GND(D)
+5V(D)
GOUTC
AGND2
VINSW
GOUTSW
AGND1
IN DSPSL
INDSPC
IN DSPSW
OUTSL
OUTSR
VINSL
VINC
OUTSW
OUTC
VINSR IN2DSP
OUT1(+)
IN DVDSR
VCC DA GOUTSR IN1MIX
OUT2(-)
CL MUTE OUT2(+)
INDVD SW
AGND5 AGND6 VEE AGND4 DGND OUT1(-)
IN1DSP
INDVDC
IN DVDSL
IN82
AGND8 IN81
IN72 IN71 IN62
OUT2 BBNF1 OUT1 BNF22 BBNF2 IN61
IN52 IN51
BNF12 BNF21 BNF11 IN41
IN42
TNF1 IN32
IN21
GOUT1
AGND9
IN12
IN11
VIN2
GOUT2
ROUT32
ROUT31
AGND10
ROUT11
ROUT22
ROUT21
ROUT12
GOUTSL
AGND3
AGND7
TNF2
VIN1
IN22
IN DSPSR
IN2MIX
IN31
25
24
23
22
8
7
14
11
12
15
6
10
3
1
5
4
2
13
9
19
16
17
21
18
20
1 2 4
3 5 6 8
7 9
TO DSP SECTION
TO DSP SECTION

– 15 –
SD-AT50
Figure 15 BLOCK DIAGRAM (5/9)
BI507
IC507
BA05ST
SWITCH
REGULATOR
4 2
CNP505
CNP506
IC513
KIA7809AP
VOLTAGE
REGULATOR
3 1
CNP504
Q516
Q518
Q517
IC505
NJM4565D
OPE AMP.
Q514
Q525
Q527
Q526
0
9
8
7
6
5
4
3
2
1
0
9
8
7
6
5
Q504
Q503
1234
5 6 7 8
2
5 3 1
OUTSW
OUTC
OUTSR_RCH
OUTSR_LCH CCB_DO CCB_CL
CCB_DI
CCB_CE
TUN_R
TUN_L
FMVSM
+5V(D)
OUTC
AGND
OUTSW
AGND
+12V
+12V
+12V
-12V
BS_RCH BS_LCH
TUN_L
TUN_R
+5V(D)
A_+7V
PROTECT
A_+7V
A_-7V
-12V
TUNER_SM
AMP_SOUT
AMP_STB
AMP_CLK
AMP_SIN
AMP_INT
OUTSR_LCH
OUTSR_RCH
OUTF_RCH
OUTF_LCH
A_-7V
A_-7V
HP_R
HP_L
S_MUTE
GND_D
REG_ON
A.GND
GND
AUX
VTR
R-CH
L-CH
L-CH R-CH
GND_UCON
GND_A
+
-
+3.7V_(UCON)
D+7.5V
AMP_SIN
AMP_SOUT
GND_D
A+15V
AMP_INT
AMP_STB
AMP_CLK
A-15V
CENTER
SURROUND LCH
SURROUND RCH
FRONT RCH
FRONT LCH
GND
GND
TO POWER
SECTION
SUB WOOFER
VDD
-
+
VSS
+3.7V(UN-SWD)
IN22
-12V(A)
-15V(A)
+7.5V(SWD)
+15V(A)
+12V(A)
CE
DO
FM VSM
GND
L OUT
FM DET
VCC +9V
DI
CL
R OUT
3
1
2
2
4
7
5
1
9
3
11
6
8
01
8
6
11
3
1
9
5
7
2
4
2
1
3
1
01
6
8
1
5
3
7
2
4
TO DSP
SECTION
TO POWER
SECTION
TO TUNER
UNIT

SD-AT50
– 16 –
Figure 16 BLOCK DIAGRAM (6/9)
D706 LED805
LED803
LED804
LED806
LED802
LED807
LED809 LED808
CNP901
RL
9
BI901
D
9
21
32
31
30
29
28
27
26
25 16
15
14
13
12
11
10
9
XL701 2 MHz
BI802
BI801
CNP801
RL801
RL802
SO801
SPEAKER
TERMINAL
D801
RL803
CNP803
IC813
KIA4558F
PRE AMP.
8
4
IC811
KIA4558F
PRE AMP.
8
4
IC812
KIA4558F
PRE AMP.
8
4
BI803
D710
24 23 22 21 20 19 18 17
1 2 3456783
123
5 6 7
3 2 1
5 6 7
3 2 1
5 6 7
PROTECT
A_-15V
RLY_+12V
P
AC_DETECT
AMP_INT AMP_INT
T
A
+3.7V(UCON)
+15V
A__+15V
DRIVER
-15V
AMP_CLK
AMP_STB
AMP_SOUT
AMP_INT
AMP_SIN
D_+7.5V
-
B
+15V
SYS_STOP
AC_DETECT
S_S_MUTE F_S_MUTE FAN_LOCK
PROTECT
FAN C_S_MUTE
RESET
+3.7V(UCON)
+3.3V(USWD)
+B_CHECK
OFFSET
SYS_STOP
W_S_MUTE
AMP_STB
TIMING_CK
-B_CONT
POWER
AMP_SIN AMP_CLK AC_DETECT A/D_RESET BASS-SW SP_RLY AMP_SOUT
A_+12V
A_-12V
SP__RLY
SP_RLY SP_RLY
SP__RLY
FAN FAN_LOCK
BASS-SW
PROTECT
OFFSET
A/D_RESET
W_S_MUTE
C_S_MUTE
S_S_MUTE
F_S_MUTE
PROTECT
A_+12V
BASS SW
DRIVER
RESET
IC702
PST9127
RESET
RELAY
DRIVER RELAY
DRIVE
R
VOLTAGE
REGULATOR MOTOR
DRIVER
SWITHING
BUFFER
BUFFER
BUFFER
BUFFER
MUTE
DRIVER
MUTE
DRIVER
MUTE
DRIVER
MUTE
DRIVER
MUTE
DRIVER
M1
FAN MOTOR
Q701
SUBWOOFER
SUBWOOFER
Q705
Q704
Q703 FRONT R-CH
FRONT L-CH
Q829
Q828
Q859
Q818
VDD
-
+ VSS
+
-
Q815
Q816
Q817
Q820
Q814
Q813
+ VDD
- VSS
+
-
Q819
Q812
Q811
Q827
Q830
M
Q822
Q801
-
-
+
+ VSS
VDD
POINT
RESET
L-CH +
L-CH -
R-CH -
R-CH +
R-CH -
L-CH -
L-CH +
FRONT
SURROND
CENTER +
+
-
-
CENTER
L-CH
R-CH
L-CH
R-CH
GND
FRONT
SURROND
R-CH -
L-CH -
L-CH +
SURROND FRONT
L-CH -
R-CH -
L-CH +
R-CH +
CENTER
+
-
GND
R-CH
L-CH
L-CH
CENTER
R-CH
GND
GND
R-CH +
SUB WOOFER
R-CH +
SURROND FRONT
CENTER
SUB WOOFER
Q919
13
11
12
8
1
2
3
4
5
9
7
2
6
5
4
10
3
1
4
3
2
1
1
3
4
5
2
6
8
9
7
4
2
3
1
5
2
6
3
4
8
7
5
1
2
1
3
4
10
9
11
12
6
8
7
5
1
2
3
4
5
6
7
8
9
10
11
12
13
IC701
IX0564AW
SYSTEM
MICROCOMPUTER
+
–
SP6
SUBWOOFER
TO 1-BIT AMP.
SECTION
TO 1-BIT AMP.
SECTION
TO MAIN SECTION
TO 1-BIT AMP.
SECTION
TO 1-BIT AMP.
SECTION
TO MAIN SECTION

– 17 –
SD-AT50
Figure 17 BLOCK DIAGRAM (7/9)
IC901
STRF6238
SWITCHING
REGULATOR
5
4
2
1
CNP901
RL911
BI901
D920
F901
6A/125V
D911
3
2 1
PC901
TRS901
IC911
SE-B2
ERROR
AMP.
2
IC912
KIA7812AP
VOLTAGE
REGULATOR
3 1
L901
AC LINE
FILTER
L902
AC LINE
FILTER
D901
D913
3 2
1
IC913
S812C37A
3.7V REGULATOR
3 2
T901
SWITCHING POWER TRANSFORMER
3
3
1
2
1
A_-15V
+
12V
POWER
E
TECT
NT
TIMING_CK TIMING_CK
AC_DETECT AC_DETECT
+3.7V(UCON)
+15V
A__+15V
R
IVER
-15V
AMP_CLK
AMP_STB
AMP_SOUT
AMP_INT
AMP_SIN
D_+7.5V
-B_CONT
C
ON)
V
V
A_+15V
A_-15V
BUFFER
RELAY
DRIVER
Q919 Q925
Q911
Q924
Q922
Q921 Q920
Q918
Q923
Q901 FB/SYNC
Drain
OCP
SYNC
GND
Vin
13
11
12
8
1
2
3
4
5
9
7
2
6
5
4
10
3
1
4
3
2
1
SO901
AC INLET
AC 120V, 60 Hz
AC POWER
SUPPLY CORD

SD-AT50
– 18 –
Figure 18 BLOCK DIAGRAM (8/9)
2
1
3
2
1
CNP507
3 1
3 1
3 1
CN501B
8
7
6
5
4
3
2
1
44
43
42
41
40
39
38
37
36
35
34
33 32 31 30 29 28 27 26 25 24 23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
43
2
1
4
1
1
3
1
2
1
1
1
0
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
44
43
42
41
40
39 38 37 36 35 34 33 32 31 30 29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
2
2
2
SDATA1
SCLK
LRCK
SCLK
SDATA1
/EXTMEM
_DSP_INTREQ
_DSP_CS
_DSP_SCDOUT
/EMWR
/EMOE
_DSP_SCDIN
EMAD0 EMAD1 EMAD3 EMAD2 EMAD4 EMAD5 EMAD6 EMAD7 _DSP_SCCLK
EX_CLK
_DSP_SCCLK
_DSP_INTREQ
DSP_SCCLK
DSP_ABOOT
DSP_INTREQ
MCLK LRCK AUDATA0 SDATA1 SCLK
AUDATA1
AUDATA2
SCL
SDA
OVF
DVD_ON
DVD_POWER
KEY_OUT
EX_CLK
AUDATA2
DSP_RESET
LRCK
SCLK
MCLK
AUDATA1
AUDATA0
PROTECT
CCB_CL CCB_DI AMP_CLK AMP_SOUT CCB_CE CCB_DO TUNER_SM AMP_INT FM_STB AMP_SN AMP_STB
_DSP_SCDOUT
_DSP_CS
_DSP_SCDIN
DSP_SCDIN
DSP_SCDOUT
DSP_CS
LRCK
+2.5V(D)
+2.5V(D) +2.5V(D)
IC101
CS493264
DSP
+5V(A)
+5V(D)
+5V(D)
+5V(A)
+5V(A)
+5V(A)
+5V(A)
+3.3V(D)
+3.3V(D)
IC104
74HC07AF
BUFFER AMP.
IC103
TC7WU04U
DUAL2-INPUT
AND GATE
+3.3V(D)
IC112
SI3033LUS
3.3 V REGULATOR
IC111
IX0446AW
VOLTAGE
REGULATOR
IC110
SI3050LUS
VOLTAGE
REGULATOR
<
IC102
AK4586VQ
ADC/DAC/DIR
CONVERTER
IC109
TC7WU04U
DUAL2-INPUT
AND GATE
SO102
SYSTEM CONTROL
TERMINAL
SO101
DVD/CD DIGITAL
INPUT TERMINAL
+5V(D)
GND(U-COM) +9V(A) +5V(D)
+2.5V(A)
+5V(D)
+3.7V(UN-SWD)
+3.3V(D)
+2.5V(D)
GND(D)
+5V(A)
GND(A) LOUT1 LOUT2 LOUT3 ROUT3 ROUT2 ROUT1 RIN LIN
VCC
GND
3Y 3A
2Y
2A 1Y
1A
RX101
GP1FM521
AUX DIGITAL
INPUT TERMINAL
XL101
12.288 MHz
1A 1Y
2A 2Y
3A
3Y
GND
VCC
PVDD
R
PVSS
RX4
SLAVE
RX3
TST
RX2
I2C
RX1
CAD0/CSN
SCL/CCLK
SDA/CDTI
CAD1/CDTO
INT1
INT0
MCKO TX XTI/EXTCLK
XTO
SCLKN2
LRCLKN2
SDATAN2
SCCLK
SCDIN
SCDOUT
CS
INTREQ
EXTMEM
SDATAN1
SCLKN1
LRCLKN1
D0 D1 D2 D3 D4 D5 D6 D7
RD
WR
XMT958
MCLK
SCLK
LRCLK
AUDATA0
AUDATA1
AUDATA2
CLKIN
CLKSEL
FILT2
FILT1
RESET
DD
DC
AGND
VA
DGND3
DGND2
DGND1 VD3
VD2
VD1
DZF2/OVF
VCOM
VREFH
AVDD
AVSS
DZF1
LIN
RIN
ROUT1 ROUT2 ROUT3 LOUT3 LOUT2 LOUT1
PDN
DVSS DVDD TVDD SDTO
SDTI3
SDTI2
SDTI1
LRCK BICK
3
211
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
VCC
GND
TO MAIN SECTION

– 19 –
SD-AT50
Figure 19 BLOCK DIAGRAM (9/9)
CNP507 TP300 CN503B
5 4
3 2
1
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
987654321
TUNER_SM
H.P_SW
DSP_INTREQ
RESET SYS_STOP RX_IN AMP_INT
DSP_RESET
DSP_SCCLK
DSP_CS
DSP_SCDOUT
DSP_SCDIN
FLASH_BUSY
FLASH_SCLK
FLASH_RXD
FLASH_TXD
DTS_LED
STD_LED
DD_LED
TIMER_LED
DSP_UC17
DSP_UC16
DSP_UC15
DSP_ABOOT ROM
DPL_LED VIR_LED VOL_CL VOL_DA B_LIGHT STR_LED
SUB_SP_ON
DIG_FUNC+B BASS_SW _S_MUTE
S_MUTE
PROTECT
POWER_KEY
CCB_CL
FM_STB
CCB_CE
CCB_DI
CCB_DO
DVD_POWER
KEY1
LCD_SDA LCD_SCL LCD_CS FLASH_VCC LCD_RESET AMP_STB AMP_CLK AMP_SN AMP_SOUT OVF KEY_OUT DVD_ON SDA SCL B_LIGHT
RX_IN POWER_KEY LCD_SDA TIMER_LED LCD_SCL DTS_LED LCD_CS DD_LED LCD_RESET DPL_LED VIR_LED STD_LED H.P_SW STR_LED KEY1
FLASH_TXD FLASH_SCLK FLASH_BUSY FLASH_RXD RESET FLASH_VCC
S_MUTE SUB_SP_ON VOL_DA PROTECT BASS_SW VOL_CL
Q401
Q402
Q303
IC302
PST9127N
RESET
IC301
IX0563AW
DSP SYSTEM
MICROCOMPUTER
2
L
US
U
LATOR
IC111
IX0446AW
VOLTAGE
REGULATOR
+3.3V(SWD)
+3.3V(BACK-UP) +3.3V(UN-SWD)
+9V(A)
+3.3V(UN-SWD) +3.3V(BACK-UP)
GND(H/P) L-CH(H/P) GND(H/P) L-CH(H/P) R-CH(H/P) R-CH(H/P)
+3.3V(BACK-UP)
+3.3V(UN-SWD)
+3.7V(UN-SWD)
RESET
POINT
P47
P50
P51
P52
P53
P54
P55
P56
P57
P60
P61
P62
P63
P64
P65
P66
P70 P71 P72 P73 P74 P75 P76 P77 P80 P81 P82
BYTE
P97
AVCC
VREF
AN0
AVSS
AN1
AN2
AN3
AN4
AN5
AN6
AN7
P00
P01
P02
P03
P04
P05
P06
P07
P10 P11 P12 P13 P14 P15 P16 P17 P20 P21 P22 P23 P24 P25 P26 P43 P27 VSS P30 VCC P31 P32 P33 P34 P35 P36 P37 P40 P41 P42
P44
P45
P46
P67
P83 P85
VCC
XIN
VSS
P84
XOUT
RESET
P86 P87
CNVSS
P90 P91 P92 P93 P94 P95 P96
XL301
8.38MHz
3
21
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
11 3459
8
79 8 7 6 5 4 3 2 1
26
+3.3V(SWD)
+5V(D)
TO MAIN SECTIONTO DISPLAY SECTION

SD-AT50
– 20 –
A
B
C
D
E
F
G
H
123456
Figure 20 WIRING SIDE OF P.W.BOARD (1/12)
R594
R593
R588 C638
R584
R585
R586
R583
C637
C641 R587 R713A
C578
C587
R615
R600 R601
R602 R603
C582
C588
C642
R648
R505
IC501
R504
C508
C507
R500
R501
R621
C630
C629
C606
R709A
C697
R710
C648
R633
C647
R634
R635
R637
C653
R638
C654
R636 R639
C657
R641
C658
R642
R645
C661
C662
R646
C537
R521
R507
R509
C535
C533
R519 R517 R513
R515
R511
R512
R514
R520
R522
C534 C538
R508
R516
R510
R518 C536
R644
C632 C691 C692
R643
R640
C649
R632
R631
C589
CN503A
Q517
Q518
R597
R598
R596
R591
R647
R590
R592
Q516
R595
R714A
C634
C640
IC505
C665
C633
C639
C583
C585
R626
R627
ZD502
Q514
D514
Q525
R614
R613
ZD503
C584 Q526
R690
C586
D509
D517
R605
C601
Q527
D516
C598
R606
R604
D518
Q504
R619
D508
R616
R620
R599
C666
Q503
C502
C501
D501
Q501
R649
Q502
D502
Q528
C524 C523
C522
C521
C520 C519 C518 C517
C698
C506
D537
C503
C504
D538
C505
C664 C663
COR501
D507
COR502
R652
BI507 C605
C604
C595
C696
C594
R689 IC507
IC513
R611 R612
C596
D526 D525
D527 D528
R651
R688
ZD504
CNP504
R609
R610
R608
R607
C645
C646
C651
C652
C655
C656
C659
C660
C531
C529
C527
C525
CN501A
C526
C528
C530
C532
D521
D522
JT501
DVD/CD/TV
TERMINAL
JT502
VTR/AUX
TERMINAL
D523
D524
D520
D519
CNP506
SYSTEM
CONTROL
TERMINAL
C590
CNP505
SYSTEM
CONTROL
TERMINAL
C592 C591
D511 D510
FFC501
FFC503
CNS507
CN501B
P25 10 - B
TO DSP PWB
25 1
R-CH L-CH
DVD/CD R-CH L-CH TV R-CH VTRL-CH R-CH L-CH AUX
1234 15
789
10
11 12
13
6
234
5678
123
CNP507
P25 10 - G
TO DSP PWB
12
34
78
56
9
10
11
2
14
36
58
7
10
9
12
11 14
13 16
15 18
17 20
19 22
21 24
23
25
3
2
1
3
2
1
41
45
50
55
60
64
65
70
75
80
1510 1520
24 25
30 35 40
1
2
3
4
8
7
6
5
E C B
S
G
D
S
G
D
E
C
B
E
C
B
E
C
B
2468
13579
1
2
3
E
C
B
B
C
E
B C E
MAIN PWB-A1
1
3
1
1
2
3
3
5
2
4
CN503B
P24 1 - F
TO DSP PWB
19