Pioneer SX-20-K, SX-20-S Service manual

STEREO RECEIVER

SX -20

VOLUME

MEMORY

TUNE / PRESET

STANDBY ON

TONE BALANCE

STANDBY

PHONES

A SPEAKERS B

SX-20-K

ORDER NO.

RRV4392

SXTEREO RECEIVER

-20-K

SX-20-S

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Model	Type	Power Requirement	Remarks
SX-20-K	YXE8	AC 220 V to 230 V
SX-20-S	YXE8	AC 220 V to 230 V

PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.

PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

PIONEER CORPORATION 2012

K-ZZZ OCT. 2012 Printed in Japan

	1		2		3		4

SAFETY INFORMATION

A

This service manual is intended for qualified service technicians; it is not meant for the casual do-it- yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual.

Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician.

B

	CONTENTS
	SAFETY INFORMATION..........................................................................................................................................................	2
	1. SERVICE PRECAUTIONS ....................................................................................................................................................	3
	1.1 NOTES ON SOLDERING ...............................................................................................................................................	3
C
	1.2 SERVICE NOTICE..........................................................................................................................................................	3
	2. SPECIFICATIONS.................................................................................................................................................................	4
	3. BASIC ITEMS FOR SERVICE...............................................................................................................................................	5
	3.1 CHECK POINTS AFTER SERVICING............................................................................................................................	5
	3.2 PCB LOCATIONS ...........................................................................................................................................................	6
	4. BLOCK DIAGRAM.................................................................................................................................................................	8
	4.1 OVERALL WIRING DIAGRAM .......................................................................................................................................	8
	4.2 SIGNAL BLOCK DIAGRAM..........................................................................................................................................	10
	4.3 LEVEL and POWER SUPPLY BLOCK DIAGRAM .......................................................................................................	12
	4.4 GND MAP DIAGRAM....................................................................................................................................................	14
	5. DIAGNOSIS.........................................................................................................................................................................	16
D	5.1 TROUBLESHOOTING..................................................................................................................................................	16
	5.2 DETECTION CIRCUIT..................................................................................................................................................	22
	5.3 IC INFORMATION.........................................................................................................................................................	23
	6. SERVICE MODE .................................................................................................................................................................	33
	6.1 SERVICE MODE...........................................................................................................................................................	33
	6.2 FACTORY DEFAULT SETTINGS .................................................................................................................................	36
	7. DISASSEMBLY ...................................................................................................................................................................	37
	8. EACH SETTING AND ADJUSTMENT ................................................................................................................................	43
	9. EXPLODED VIEWS AND PARTS LIST...............................................................................................................................	44
	9.1 PACKING SECTION .....................................................................................................................................................	44
	9.2 EXTERIOR SECTION...................................................................................................................................................	46
	10. SCHEMATIC DIAGRAM....................................................................................................................................................	50
E	10.1 MAIN ASSY (1/2) ........................................................................................................................................................	50
	10.2 MAIN ASSY (2/2) ........................................................................................................................................................	52
	10.3 FRONT, LED, POWER SW. SPK SW AB, RMC and HP ASSYS ...............................................................................	54
	11. PCB CONNECTION DIAGRAM.........................................................................................................................................	56
	11.1 MAIN ASSY.................................................................................................................................................................	56
	11.2 FRONT, POWER SW, HP, LED, RMC, SPK SW AB, GUIDE C and GUIDE R ASSYS..............................................	60
	12. PCB PARTS LIST ..............................................................................................................................................................	64

F

2

SX-20-K

	1		2		3		4

	5		6		7		8

1. SERVICE PRECAUTIONS

1.1 NOTES ON SOLDERING

•For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.

Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs accompanied by reworking of soldering.

•Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 ºC. Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 ºC in general, although

the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of the soldering iron.

Do NOT use a soldering iron whose tip temperature cannot be controlled.

Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting temperatures (hard to melt/easy to harden).

The following lead-free solders are available as service parts:

•Parts numbers of lead-free solder: GYP1006 1.0 in dia.

GYP1007 0.6 in dia. GYP1008 0.3 in dia.

A

B

C

1.2 SERVICE NOTICE

•Discharging

For more detail, please refer to "7. DISASSEMBLY - 1. Discharging".

D

E

F

SX-20-K

3

	5		6		7		8

	1		2

2. SPECIFICATIONS

A

Amplifier section

Power output specification is for when power supply is 230 V.

•Continuous power output

(both channels driven at 20 Hz to 20 kHz)

100 W+100 W (THD 1 %, 8 Ω)

Audio section

•Input (Sensitivity/Impedance)

SACD/CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 400 mV/47 kΩ

PHONO (MM) . . . . . . . . . . . . . . . . . . . . . . . 5.5 mV/47 kΩ

•Output (Level/Impedance)

RECORDER OUT. . . . . . . . . . . . . . . . . . . . 400 mV/2.0 kΩ

B• Frequency response

SACD/CD, NETWORK, RECORDER

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 100 kHz dB PHONO (MM) . . . . . . . . . . . . . . 20 Hz to 20 kHz ±0.5 dB

	•	Tone control
	(When VOLUME is set to –30 dB)
	Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . .		± 14 dB (100 Hz)
	. . . . . . . . . . . . . . . . . . . . . . . . . . .Treble		± 14 dB (10 kHz)
	• Signal-to-Noise Ratio (IHF SHORTED,
	A-NETWORK)
	SACD/CD, NETWORK, RECORDER . .		. . . . . . . . . 100 dB
	PHONO (MM, 5.5 mV input) . . . . . . . . .		. . . . . . . . . 80 dB
	•	Total Harmonic Distortion

	C	SACD/CD, NETWORK, RECORDER . . . . . 0.01 % or less
		(1 kHz, 50 W, 8	Ω)

•Speaker load impedance

A, B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Ω to 16 Ω

A+B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ω to 16 Ω

Tuner Section

Frequency Range (FM) . . . . . . . . . . 87.5 MHz to 108 MHz

Antenna Input (FM). . . . . . . . . . . . . . . . 75 Ω unbalanced

Frequency Range (AM). . . . . . . . . . . 531 kHz to 1602 kHz

Antenna (AM) . . . . . . . . . . . . . . . . . . . . . . . Loop antenna

3

4

Miscellaneous

Power requirements . . . .AC 220 V to 230 V, 50 Hz/60 Hz Power consumption . . . . . . . . . . . . . . . . . . . . . . . . 210 W In standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 W

Dimensions

. . . . . . . . . . . 435 mm (W) x 142.5 mm (H) x 364 mm (D) Weight (without package) . . . . . . . . . . . . . . . . . . . 8.3 kg

Accessories

Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

AAA/IEC R03 dry cell batteries . . . . . . . . . . . . . . . . . . . . 2

AM loop antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

FM wire antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Power cord

Warranty card

Quick start guide

Safety Brochure

Operating instructions (CD-ROM)

Note

•Specifications and the design are subject to possible modifications without notice, due to improvements.

•Corporation and product names mentioned herein are trademarks or registered trademarks of the respective corporations.

D • Accessories

SX-20-K/-S

FM wire antenna (E605010140010-IL)

	E	AM loop antenna	CD-ROM (Operating instructions)
		(E601019000010-IL)	(6517000001020-IL)

Remote Control

(8300764700010-IL)

			Power cord
			(L068250160020-IL)
F	Quick start guide	Safety Brochure	Warranty card
AAA size IEC R03 dry cell batteries x2	(5707000007450-IL)	(5227000002540-IL)

4

SX-20-K

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	5		6		7		8

3. BASIC ITEMS FOR SERVICE

3.1 CHECK POINTS AFTER SERVICING

To keep the product quality after servicing, confirm recommended check points shown below.

No.	Procedures	Check points
1	Check the symptom pointed out by a customer	The pointed content should not reoccur
		Sound and operation should not be defective
2	Check each input and main VOL (check the	The sound is output by selecting an analog-connected input
	operation of selector)	with a selector and the sound volume should change by
		rotating main VOL knob
3	Check the tone control, balance, and function	The sound quality or right and left balances should change
		by rotating each VOL knob
4	Check DIRECT functions	The tone control should be disabled by setting DIRECT
		function to ON.
5	Check the tuner (AM and FM) operations	Audio and operations must be normal.
6	Check SPEAKER A/B and headphone terminal	There should not be defect in sound such as noise
7	Check the external package	Check scratch or taint is not generated after accepting the
		repair

A

B

See the table below for the items to be checked regarding audio.

Item to be checked regarding audio

C

Distortion

Noise

Volume too low

Volume too high

Volume fluctuating

Sound interrupted

D

E

F

SX-20-K

5

	5		6		7		8

1

2

3

4

3.2 PCB LOCATIONS

A GUIDE R ASSY

FRONT ASSY

SPK SW AB ASSY

LED ASSY

POWER SW ASSY

B

G

E

C

	RMC ASSY
B			F
		HP ASSY

D

GUIDE C

ASSY

C

D

A

MAIN ASSY

E

NOTES: - Parts marked by “NSP” are generally unavailable because they are not in our Master Spare Parts List.

-The > mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.

Mark No. Description			Part No.	Mark No. Description		Part No.

LIST OF ASSEMBLIES

NSP	1..PCB TTL ASSY MAIN	7025HK1204010-IL	NSP	1..PCB TTL ASSY FRONT
	2..MAIN ASSY	7028072771010-IL		2..FRONT ASSY
				2..LED ASSY
				2..POWER SW ASSY
				2..SPK SW AB ASSY
				2..RMC ASSY
F				2..HP ASSY
				2..GUIDE C ASSY
				2..GUIDE R ASSY

7025HK1204011-IL 7028072761010-IL 7028072762010-IL 7028072763010-IL 7028072764010-IL 7028072765010-IL 7028072766010-IL 7028072767010-IL 7028072768010-IL

6

SX-20-K

	1		2		3		4

	5		6		7		8

A

B

C

D

E

F

SX-20-K

7

	5		6		7		8

	1		2		3		4

4. BLOCK DIAGRAM

4.1 OVERALL WIRING DIAGRAM

A
	B FRONT ASSY
B	(7028072761010-IL)
C
D
A (	A 1/2 - A 2/2 )

MAIN ASSY

E (7028072771010-IL)

F

8

SX-20-K

	1		2		3		4

5	6	7		8
				A
		C	POWER SW ASSY
			(7028072763010-IL)
	G SPK SW AB ASSY
	(7028072764010-IL)		E LED ASSY
				(702807276
				B
				2010-IL)
			F	RMC ASSY
				(702807276
		D HP ASSY		5010-IL)
		(7028072766010-IL)
				C
				D
				E
				F
		SX-20-K		9
5	6	7		8

	1		2		3		4

4.2 SIGNAL BLOCK DIAGRAM

A

A MAIN ASSY

IC605

IC601

IC700

B

IC106

IC104

IC105

PACK101

C

IC103

D
B FRONT ASSY			IC101
	FLT400
E
	IC400
F
10		SX-20-K
1	2	3	4

5	6	7	8
			A
			B
			C
		IC502
			D
		IC503
			E
		IC301
			F
		SX-20-K	11
5	6	7	8

	1		2		3		4

4.3 LEVEL and POWER SUPPLY BLOCK DIAGRAM

A

LEVEL DIAGRAM

POWER DIAGR

	IC605	IC601
IC700			S1(AMP B+/B-)
			DC3.95A
B
			MAIN
			TRANS
C
			S2(+15V,-15V)
			DC 0.4A
D
			AC CORD
			S3(FLT)
			AC 0.20A
E
			SUB
			TRANS
F
12		SX-20-K
1	2	3	4

	5		6		7		8

A

ER DIAGRAM

S1(AMP B+/B-)

DC3.95A

B

MAIN

TRANS

C

S2(+15V,-15V)

DC 0.4A

D

S3(FLT)

AC 0.20A

ST_BY RLY

E

SUB TRANS

1SS133T
1SS133T
1/50	MTZJ5.6B
1N4007
1N4007
1N4007
1N4007

RESET
MTZ2.4B	F

POWER_DOWN

SX-20-K

13

	5		6		7		8

	1		2		3		4

4.4 GND MAP DIAGRAM

A	E			F
						GND map		D
			RMC ASSY
LED ASSY
							HP ASSY
		V+15V		ST3.3V

BLUE

C

POWER SW ASSY

G

ST3.3V

ST3.3V

R459(NM)

B WIRE403B SPK SW

C417(NM)

(CHGND)

AB ASSY

D402(NM)

RED

WIRE401

D403(NM)

(NM)

C425(NM)

C436(NM)

WIRE402

WIRE402

R466(NM)

R403(NM)

(CHGND)

(NM)

AC from Main Trans

FL

C

C402(0.1uF)

V-30V

ST3.3V IC400

C403(0.1uF)

(for FL)

FL uCOM

C413(0.1uF)

IC

C449(0.1uF)

B FRONT ASSY

IC605

Function/E.Vol

GW1 GND

(NM)

ST3.3V

D

IC101

IC102

CPU/

EEPROM

		V+15V						A	MAIN ASSY
IC601							R218(100 ohm)
							C140(NM)
Pre Amp
							C141(22uF)
(+16dB)
							C142(NM)		J301(0 ohm)
							C143(22uF)
									J373(0 ohm)

R215(100 ohm)

V-15V

V+9V

V+15V

TONE

C130(100uF)

C121(10uF)

eala

GND_A

VREF

C131(22uF)

C134(NM)

E.VOL

GND_D

J159(NM)

E

F

J393(0 ohm)

BD109		T/OUT_+5V	V+15V
	(NM)
		IC103

TUNER
Screw	(CHGND)

	R804(0ohm)	PHONO
C166	C167
(10uF)	(10uF)

C713 (0.01uF)

D406(KDS4148)

D407(KDS4148)

14

V+15V

V+6V

IC105

J367(NM)

C132R(NM)

J369(NM)

C707R(47uF)

J370(NM)

IC700

C132L(NM)

SACD/CD

C713(0.022uF) (NM)C715

Screw (CHGND)

C707L(47uF)

IC106

V-6V

V-15V

J311(0 ohm)

	NETWORK			REC IN	REC OUT
	Screw (CHGND)			Screw	(CHGND)

REFERENCE

POINT

SX-20-K

BACK CHASSI

	1		2		3		4

	5		6		7		8

R463(NM)

CHGND

A_GND(±15V)

C418(0.022uF)

S_GND(Power AMP)

A_GND(TUNER)

D404(NM)

ASSY

S_GND(HEADPHONE)

A_GND(Relay)

D405(NM)

S_GND(PHONO)

CPU GND(subtrans)

WIRE400

D_GND(Protection)

(CHGND)

V+15V

V+24V

V+24V

(for RELAY)

(for RELAY)

IC502

C513

(220uF)

C517

(1000uF)

C502

(47uF)

)

)

V+3V

(for MUTE) C551(NM)

MUTE

CIRCUIT

V+15V

C344L/R(100uF)C345L/R(330pF)

Power Amp

(+27dB)

V+B

C342L/R(100uF)

C343L/R (NM)

C340L/R(100uF)

C341L/R (NM)

	V-B
	C711(NM)
	C712(NM)
3V3
PROTECTION	V+24V
	(for RELAY)
	CIRCUIT
J116
(0 ohm)

J392 (0 ohm)

R332A

(NM)

C318R

(0.047uF)

C530

(100uF)

C536

(470uF)

IC503

V-15V

A_GND

S_GND

V+3V

(for MUTE)

V+B

C509(6800uF)

C331(10uF)

J363(0 ohm)

C550(0 ohm)

C510(6800uF)

GND101

(CHGND)

V-B

V-30V

J272(0 ohm)

C542(0.047uF)

C524(NM)

C525(NM)

GND401

(CHGND)

AC

3V3

RELAY

IC301

C303

C308

R331A

(470uF)

(NM)

C318L

(0.047uF)

+			+		-
	-
						+		-		+	-
SP_B_Rch			SP_A_Rch SP_A_Lch							SP_B_Lch
	GT7									GT6
(CHGND)										(CHGND)

K CHASSIS

SX-20-K

A

S2 B

C

S1

Main Trans

D

E

Sub Trans

F

15

	5		6		7		8

	1		2		3		4

5. DIAGNOSIS

5.1 TROUBLESHOOTING

A Speaker_A No sound

[Product state]

•Power cord connection (230 V/50 Hz)

•Unit POWER SW: ON

•Power ON operation by remote control

•SPEAKER-A selection

•INPUT: SACD/CD

A sound does not come out from Speaker_A.

B

I

		No	No	No	Is a DC wave	No	Is a AC wave	No
	Is power ON?				(rectification waveform DC +8V)
		Does the STANDBY LED					in the D516 anode side?
		lit?			in the D516 cathode side?
	Yes	Yes			Yes		Yes
		A protection circuit works.			IC301 is defective or its solder is		D516 to D519 are defective
		(See "6. SERVICE MODE".)			defective.		or Those solders are defective.

• F101 is defective.

Is there DC +3.3V

• T502 is defective or its solder is

in 3V3 line?

C

defective.

(Check the J361 (3V3).)

Yes

Is the "POWER_DOWN" line

No

• D515 or D523 is defective or its solder is defective.

Low (DC0V)?

•

DZ502 is defective or its solder is defective.

(Check the J361.)

•

Q300 is defective or its solder is defective.

Yes

•

REM401 is defective or its solder is defective.

When pressed the "STANDBY/ON"

No

button of the remote control unit, is

•

Connection between CN403 - CP403 is defective.

there remote control signal wave?

• Connection between CN402 - CP402 is defective.

(Check the R270.)

• Connection between FPC400 - FPC101 is defective.

Yes

D

Is there DC +3.3V

After power ON, does

No

No

IC101 is defective or its solder is

Protection Relay (RLY501) do

in FL_SW/RLY line?

defective.

ON? (sound occurs click)

(Check the J182.)

Yes

Yes

• RLY501 is defective or its solder is defective.

•Q502 is defective or its solder is defective.

	Does the sound	No		Is there DC+9.0V
	output from RECORDER OUT			in +9V line?
	terminal?			(Check the J152.)

E

No • IC104 is defective or its solder is defective.

• Check the +15 V power supply.

Yes

F

a

16

Yes

Is there signal

in IC605 pin 6/pin 27? (Check the C114L/R + pin.)

Yes

Is the voltage of REC_MUTE 0 V?

(Check the J310 REC_MUTE.)

Yes

IC101 is defective or its solder is defective.

No

No

Is there signal			No		• JACK102 solder is defective.
in IC605 pin 1/pin 32?					• C103L or C103R solder is
(Check the C103L/R + pin.)					defective.
	Yes

IC605 is defective or communication defective or its solder is defective.

•Q552 or Q553 is defective or its solder is defective.

•Q551 is defective or its solder is defective.

SX-20-K

	1		2		3		4

	5		6		7		8

a

Yes

Is there signal

in IC601 pin 3/pin 5? (Check the C122L/R - pin.)

Yes

Is there DC+15V in IC601 pin 8? (Check the C141 + pin.)

Is there DC-15V in IC601 pin 4? (Check the C143 - pin.)

Yes

Is there signal

in IC601 pin 1/pin 7? (Check the C601L/R + pin.)

Yes

Is there signal

in Power Amp input? (Check the J335, J336.)

Yes

Is there signal

in Power Amp output? (Check the J122 L_HOT, J124 FR_HOT.)

Yes

No • IC605 is defective or communication defective or its solder is defective.

• C122L/R solder is defective.

No • R218 or R215 is defective or its

solder is defective.

•Check the ±15 V power supply.

•IC601 is defective or its solder is defective.

No • D1000 to D1003 are defective or those solders are defective.

•Q107 or Q113 is defective or its solder is defective.

								• Q314L/R, Q316, Q317 are defective
No			Is the voltage of			No		or those solders are defective.
			MAIN_MUTE 0 V?					• Q315 is defective or its solder is
			(Check the J317 MAIN_MUTE.)					defective.
				Yes				• C601L/R solder is defective.
		IC101 is defective or its solder is
		defective.
No		• Power Amp block is defective .
		• Check a solder of Power Amp block.

Is SPK-A/RLY High?	No		IC101 is defective or its solder is
(Check the R199			defective.
SPK-A/RLY.)

Yes

•RLY302 is defective or its solder is defective.

•Q314 is defective or its solder is defective.

A

B

C

D

Speaker_B No sound

[Product state]

•Power cord connection (230 V/50 Hz)

•Unit POWER SW: ON

•Power ON operation by remote control

•SPEAKER-B selection

•INPUT: SACD/CD

A sound does not come out from Speaker_B.

Does a sound come out from Speaker_A?

Yes

Is SPK-B/RLY High?

(Check the R200

SPK-B/RLY.)

Yes

No I

See "Speaker_A No Sound".

No IC101 is defective or its solder is defective.

•RLY301 is defective or its solder is defective.

•Q313 is defective or its solder is defective.

SX-20-K

E

F

17

	5		6		7		8

	1		2		3		4

A Phones No sound

[Product state]

•Power cord connection (230 V/50 Hz)

•Unit POWER SW: ON

•Power ON operation by remote control

•INPUT: SACD/CD

A sound does not come out from phones.

B

	Does a sound come	No
				I
	out from Speaker_A?

See "Speaker_A No Sound".

Yes

Is there signal in RLY303?

(Check the R343L/R.)

Yes

Is H/P_RLY High?

(Check the J107 H/P_RLY.)

C

Yes

No R343L or R343R is defective or its solder is defective.

No IC101 is defective or its solder is defective.

•RLY301 is defective or its solder is defective.

•Q313 is defective or its solder is defective.

•Connection of CP301 is defective.

•JACK401 is defective or its solder is defective.

NETWORK No sound

[Product state]

• Power cord connection (230 V/50 Hz)

D• Unit POWER SW: ON

•Power ON operation by remote control

•SPEAKER-A selection

•INPUT: NETWORK

A sound does not come out from NETWORK input.

	Does a sound come			No
						I
	out from SACD/CD input?
						See "Speaker_A No Sound".
E		Yes
	Is there signal in			No
						• JACK102 solder is defective.
	IC605 pin 2/pin 31?
						• C106L or C106R solder is defective.
	(Check the C106L/R + pin.)

Yes

IC605 is defective or communication defective or its solder is defective.

F

RECODER IN No sound

[Product state]

•Power cord connection (230 V/50 Hz)

•Unit POWER SW: ON

•Power ON operation by remote control

•SPEAKER-A selection

•INPUT: RECODER IN

A sound does not come out from RECODER input.

Does a sound come			No
					I
out from SACD/CD input?
					See "Speaker_A No Sound".
	Yes
Is there signal in			No
					• JACK101 solder is defective.
IC605 pin 3/pin 30?
					• C109L or C109R solder is defective.
(Check the C109L/R + pin.)

Yes

IC605 is defective or communication defective or its solder is defective.

18

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PHONO No sound

[Product state]
• Power cord connection (230 V/50 Hz)				• SPEAKER-A selection
• Unit POWER SW: ON				• INPUT: PHONO
• Power ON operation by remote control
A sound does not come out
fromPHONO input.
		No
Does a sound come			I
out from SACD/CD input?
			See "Speaker_A No Sound".
	Yes

Is there signal in

IC700 pin 3/pin 5? No (Check the C703L/R + pin.)

Yes

Is there signal in

IC700 pin 1/pin 7? No (Check the C708L/R + pin.)

•JACK103 solder is defective.

•C703L or C703R solder is defective.

Is there DC+6V in IC700 pin 8?		No		• IC105 or IC106 is defective or its
(Check the R708R.)
				solder is defective.
Is there DC-6V in IC700 pin 4?
				• Check the ±15 V power supply.
(Check the R708L.)

	Yes					Yes
					IC700 is defective or its solder is
					defective.
Is there signal in			No		C708L, C708R, C710L, C710R
IC605 pin 4/pin 29?
					are defective or those solders are
(Check the C710L/R + pin.)
					defective.

Yes

IC605 is defective or communication defective or its solder is defective.

TUNER No sound

[Product state]
• Power cord connection (230 V/50 Hz)	• SPEAKER-A selection
• Unit POWER SW: ON	• INPUT: TUNER (FM/AM)
• Power ON operation by remote control	• Tuner setting: FM

A sound does not come out from TUNER input.

Does a sound come out from SACD/CD input?

Yes

Is there signal in PACK101 pin 7/pin 8? (Check the C113L/R - pin.)

Yes

Is there signal in IC605 pin 5/pin 28? (Check the C113L/R + pin.)

Yes

IC605 is defective or communication defective or its solder is defective.

No I

See "Speaker_A No Sound".

No

No C113L or C113R is defective or its solder is defective.

Is there DC+5V in PACK101 pin 5? (Check the R708R for +6 V, R708L for -6 V.)

Yes

Is there communication waveform in TUNER_SCLK and TUNER_SDIO? (Check the J405 for TUNER_SCLK, J406 for TUNER_SDIO.)

Yes

PACK101 is defective or its solder is defective.

•IC103 is defective or its solder is defective.

No • BD121 solder is defective.

•D520 is defective or its solder is defective.

•Check the ±15 V power supply.

No • IC101 is defective or its solder is defective.

• PACK101 solder is defective.

A

B

C

D

E

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A

FL No light

[Product state]

• Power cord connection (230 V/50 Hz)

• SPEAKER-A selection

• Unit POWER SW: ON

• INPUT: SACD/CD

• Power ON operation by remote control

FL does not light.

No

Does a sound come

I

B

out from SACD/CD input?

See "Speaker_A No Sound".

Yes

Is there AC waveform

No

Is there AC waveform

No

• Connection of CP401 is defective.

signal in FLT pin 1/pin 39?

signal in R400A/R403A?

• Main transformer is defective.

(Check the FRONT Assy side B.)

(Check the FRONT Assy side B.)

Yes

Yes

•R400A or R403A is defective or its solder is defective.

•R404 or R405 is defective or its solder is defective.

•DZ400 is defective or its solder is defective.

	C		Is there DC-30V in
			FRONT Assy -30V?
			(Check the FPC400 pin 1
			on FRONT Assy side B.)
				Yes

	No		Is there DC-30V		No		• Q501 is defective or its solder is defective.
							• DZ513 is defective or its solder is defective.
			in MAIN Assy -30V?
							• R508 is defective or its solder is defective.
			(Check the J304.)
							• FPC101 or FPC400 solder is defective.
				Yes

•FPC101 or FPC400 solder is defective.

•Connection between FPC101 - FPC400 is defective.

Is there communication waveform in
FRONT Assy FL_CLK, FL_DOUT?		No		Is there communication waveform		No		IC101 is defective or its solder is
				in MAIN Assy FL_CLK, FL_DOUT?
(Check the FL_CLK, FL_DOUT								defective.
				(Check the FPC101 pin 9/pin 10.)
on FRONT Assy side B.)

Yes

D

Is there DC+3.3V in IC400 VDD?

(Check the VDD on FRONT Assy side B.)

Yes

E

Is there communication waveform signal in FLT pin 4 - pin 36?

(Check the FRONT Assy side B.)

Yes

Yes

•FPC101 or FPC400 solder is defective.

•Connection between FPC101 - FPC400 is defective.

No		Is there DC+3.3V in			No
		FRONT Assy FL_SW/RLY?
		(Check the FPC400 pin 15 on
		FRONT Assy side B.)
			Yes

Does the STADBY LED (Red) light at standby state?

Yes

•Q401 is defective or its solder is defective.

•Q402 is defective or its solder is defective.

No IC400 is defective or its solder is defective.

•FPC101 or FPC400 solder is defective.

•Connection between FPC101 - FPC400 is defective.

FLT400 is defective or its solder is defective.

F

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