Pioneer A-307R, A-207R Manual

VOLUME

Direct Energy MOS

POWER										TAPE 1	TAPE 2
						CD	TUNER	PHONO	LINE	/MD	MONITOR
A SPEAKERS B	BASS		TREBLE			BALANCE			INPUT SELECTOR
PHONES			LOUDNESS		DIRECT						TAPE 2
											MONITOR
–	+	–	+	MIN	MAX	L	R

The illustration shows the A-307R.

ORDER NO.

RRV1912

STEREO AMPLIFIER

A-307R

A-207R

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

	Type	Model		Power Requirement	The voltage can be converted by the
		A-307R	A-207R		following method.
	MYXJ/EW			AC220-230V	––––
	MYXJ/GR			AC220-230V	––––
	MVXJ	–		AC220-230V	––––
	SAMXJ		–	AC110V/120-127V/220V/240V	With the voltage selector
	SDXJ		–	AC110V/120-127V/220V/240V	With the voltage selector

CONTENTS

1. SAFETY INFORMATION ......................................	2	7. GENERAL INFORMATION ................................		26
2. EXPLODED VIEWS AND PARTS LIST ................	3	7.1	IC .................................................................	26
3. SCHEMATIC DIAGRAM .......................................	6	7.2	DISASSEMBLY ...........................................	27
4. PCB CONNECTION DIAGRAM ..........................	14	7.3	BLOCK DIAGRAM .......................................	28
5. PCB PARTS LIST ...............................................	22	8. PANEL FACILITIES AND SPECIFICATIONS ....		29
6. ADJUSTMENT ....................................................	25

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.

PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923 c PIONEER ELECTRONIC CORPORATION 1998

T - IZK APR. 1998 Printed in Japan

A-307R, A-207R

1. SAFETY INFORMATION

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.

WARNING

Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).

When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with the solder. Also, when soldering do not inhale any smoke or fumes produced.

NOTICE

(FOR CANADIAN MODEL ONLY)

Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must be of identical designation.

REMARQUE

(POUR MODÈLE CANADIEN SEULEMENT)

Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pièces de remplacement doivent avoir la même désignation.

(FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS

The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5mA.

		Reading should
	Leakage	not be above
Device	current	0.5mA
under	tester
test
Test all
exposed metal
surfaces
Also test with
plug reversed		Earth
(Using AC adapter		ground
plug as required)

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appliance have special safety related characteristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual.

Electrical components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual.

The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards.

Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER.

2

A-307R, A-207R

2. EXPLODED VIEWS AND 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.

•Screws adjacent to mark on the product are used for disassembly.

2.1PACKINGParts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.NOTES:

MVXJ type Only

	19	20
		17

12

Except
MVXJ type
18
5	15
	(SAMXJ type
6	Only)

8

10

11

FRONT

7 1 (Except MYXJ/GR type)

2 (MYXJ/EW and MYXJ/GR types Only)

13	3 (MYXJ/EW
	type Only)

4 (MYXJ/EW, MYXJ/GR and MVXJ types Only)

14 (SAMXJ type Only)

21 (SDXJ type Only)

9

16 (SAMXJ type Only)

(1) PACKING PARTS LIST

Mark	No.	Description		Part No.
	1	Operating Instructions		See Contrast table(2)
		(English)
	2	Operating Instructions		See Contrast table(2)
		(German)
	3	Operating Instructions		See Contrast table(2)
	(French/Italian/Dutch/Swedish/Spanish/Portugese)
NSP	4	Warranty Card		See Contrast table(2)
	5	Remote Control Unit (CU-A014)		AXD7163
	6	Battery Cover		AZN2249
NSP	7	Dry Cell Battery (R6P,AA)		VEM-013
	8	Side Pad L		AHA7205
	9	Side Pad R		AHA7206
	10	Sub Pad		AHA7218
	11	Packing Case		See Contrast table(2)
NSP	12	Literature Bag		AHG1180
	13	Packing Sheet		AHG7015
	14	Operating Instructions		See Contrast table(2)
		(Chinese)
	15	Caution Label 220V		See Contrast table(2)
	16	Case Label		See Contrast table(2)
NSP	17	Air Cap		See Contrast table(2)
	18	Power Cord		See Contrast table(2)
	19	Power Cord with Fuse		See Contrast table(2)
	20	Fuse (T5A)		See Contrast table(2)
	21	Operating Instructions		See Contrast table(2)
		(Spanish/Chinese)

(2) CONTRAST TABLE

A-307R/MYXJ/EW, MYXJ/GR, SAMXJ, SDXJ, A-207R/MYXJ/EW, MYXJ/GR and MVXJ are constructed the same except for the following :

						Part No.
Mark	No.	Symbol and Description		A-307R				A-207R		Remarks
			MYXJ/EW	MYXJ/GR	SAMXJ	SDXJ	MYXJ/EW	MYXJ/GR	MVXJ
	1	Operating Instructions (English)	ARB7138	Not used	ARB7142	ARB7142	ARB7138	Not used	ARB7138
	2	Operating Instructions (German)	ARC7183	ARC7183	Not used	Not used	ARC7183	ARC7183	Not used
	3	Operating Instructions (French/Italian/	ARC7184	Not used	Not used	Not used	ARC7184	Not used	Not used
		Dutch/Swedish/Spanish/Portuguese)
NSP	4	Warranty Card	ARY7009	ARY7009	Not used	Not used	ARY7009	ARY7009	ARY7009
	11	Packing Case	AHD7563	AHD7563	AHD7581	AHD7564	AHD7561	AHD7561	AHD7561
	14	Operating Instructions (Chinese)	Not used	Not used	ARC7186	Not used	Not used	Not used	Not used
	15	Caution Label 220V	Not used	Not used	ARR1003	Not used	Not used	Not used	Not used
	16	Case Label	Not used	Not used	ARW7032	Not used	Not used	Not used	Not used
NSP	17	Air Cap	Not used	Not used	Not used	Not used	Not used	Not used	AHG1087
	18	Power Cord	ADG1154	ADG1154	ADG7018	ADG1158	ADG1154	ADG1154	Not used
	19	Power Cord with Fuse	Not used	Not used	Not used	Not used	Not used	Not used	ADG1156
	20	Fuse (T5A)	Not used	Not used	Not used	Not used	Not used	Not used	AEK1046
	21	Operating Instructions	Not used	Not used	Not used	ARC7185	Not used	Not used	Not used
		(Spanish/Chinese)

3

A-307R, A-207R

2.2 EXTERIOR

35

34

37

39

28

18

41

16

38

30 or 45

27

31

33

31

32

			39
		26
	36					39
			26				39
	39
	A-307R
	Only
		24
			39
		A-307R/	43
		SAMXJ and			39
		SDXJ Types
		Only				15
				15
			8
		6	4
	3
			15
	1
			15
5			7
	25	2
	9	17	13		42	A-307R/SAMXJ
				39		and SDXJ
						Types Only
	11
41					39	39	A-307R
	39						/SAMXJ
						39	Type Only
27	29 or 44						46
			19
							40
			23
	20	19
	A-307R Only
					23
	12
		22
39	14				23
	39	17
		21				20

A-307R Only

14

21

39

4

A-307R, A-207R

(1) EXTERIOR PARTS LIST

Mark	No.	Description		Part No.	Mark No.		Description		Part No.
	1	FRONT L Assy		AWX7123		26	Screw		PBA1096
	2	FRONT R Assy		AWX7124	27		LED Lens		AAK2459
	3	OPT Assy		AWX7125	28		IR Filter		AAK7532
	4	AC PRIMARY Assy		See Contrast table(2)	29		LED Lens T		See Contrast table(2)
NSP	5	HEADPHONE Assy		AWX7114	30		Name Plate		See Contrast table(2)
	6	VOLUME Assy		AWX7118	31		Rotary Knob A		AAB7148
	7	AF Assy		See Contrast table(2)	32		Rotary Knob B		AAB7149
	8	Fuse (FU1)		See Contrast table(2)	33		Volume Knob		AAB7150
	9	Flexible Cable (19P)		ADD7032	34		Speaker Button		AAD7435
		(AF CN202-FRONT R CN601)			35		Power Joint		AAD7439
	10	• • • • •			36		Bonnet Case		ANE7183
	11	Power Transformer (T1)		See Contrast table(2)	37		Panel Base		AMB7489
NSP	12	Chassis		ANA7064	38		Front Panel		See Contrast table(2)
	13	Rear Panel		See Contrast table(2)	39		Screw		BBZ30P080FZK
	14	Insulator		PNW2766	40		Screw		BCZ30P060FCC
	15	Screw		ABA1018	41		Nut		NK90FUC
	16	Screw		ABA1027	42		Voltage Selector (S2)		See Contrast table(2)
	17	Screw (4 × 10)		ABA7047	43		Fuse (FU2, FU3 : 2A)		See Contrast table(2)
	18	Nut		ABN-065	44		LED Lens A		See Contrast table(2)
	19	PCB Support		AEC7006	45		PIONEER Badge		See Contrast table(2)
	20	Rubber Spacer		See Contrast table(2)	46		Label (Rear Base)		See Contrast table(2)
NSP	21	PCB Holder		AEC7057
NSP	22	Cord Clamp F		AEC7134
	23	PCB Mold		AMR2533
NSP	24	Damping Plate		See Contrast table(2)
NSP	25	Shield Plate		ANK7043

(2) CONTRAST TABLE

A-307R/MYXJ/EW, MYXJ/GR, SAMXJ, SDXJ, A-207R/MYXJ/EW, MYXJ/GR and MVXJ are constructed the same except for the following :

						Part No.
Mark	No.	Symbol and Description		A-307R				A-207R		Remarks
			MYXJ/EW	MYXJ/GR	SAMXJ	SDXJ	MYXJ/EW	MYXJ/GR	MVXJ
	4	AC PRIMARY Assy	AWX7113	AWX7113	AWX7115	AWX7115	AWX7113	AWX7113	AWX7113
	7	AF Assy	AWX7119	AWX7119	AWX7119	AWX7119	AWX7117	AWX7117	AWX7117
	8	Fuse (FU1 : 2A)	REK1025	REK1025	Not used	Not used	Not used	Not used	Not used
	8	Fuse (FU1 : 2.5A)	Not used	Not used	REK1026	Not used	Not used	Not used	Not used
	8	Fuse (FU1 : 6.3A)	Not used	Not used	Not used	REK1030	Not used	Not used	Not used
	8	Fuse (FU1 : 1.25A)	Not used	Not used	Not used	Not used	REK1023	REK1023	REK1023
	11	Power Transformer (T1 : AC220-230V)	ATS7188	ATS7188	Not used	Not used	ATS7190	ATS7190	ATS7190
	11	Power Transformer	Not used	Not used	ATS7189	ATS7189	Not used	Not used	Not used
		(T1 : AC110V/120-127V/220V/240V)
	13	Rear Panel	ANC7643	ANC7643	ANC7645	ANC7644	ANC7639	ANC7639	ANC7639
	20	Rubber Spacer	AEC7034	AEC7034	AEC7034	AEC7034	Not used	Not used	Not used
NSP	24	Damping Plate	AMR7216	AMR7216	AMR7216	AMR7216	Not used	Not used	Not used
	29	LED Lens T	AAK7544	AAK7544	AAK7544	AAK7544	Not used	Not used	Not used
	30	Name Plate	AAM7004	AAM7004	AAM7004	AAM7004	Not used	Not used	Not used
	38	Front Panel	ANB7114	ANB7114	ANB7114	ANB7114	AMB7493	AMB7493	AMB7493
	42	Voltage Selector (S2)	Not used	Not used	AKX-507	AKX-507	Not used	Not used	Not used
	43	Fuse (FU2, FU3 : 2A)	Not used	Not used	REK1025	REK1025	Not used	Not used	Not used
	44	LED Lens A	Not used	Not used	Not used	Not used	AAK7537	AAK7537	AAK7537
	45	PIONEER Badge	Not used	Not used	Not used	Not used	PAM1755	PAM1755	PAM1755
	46	Label (Rear Base)	Not used	Not used	PRW1499	Not used	Not used	Not used	Not used

5

	1		2		3		4

A-307R, A-207R

3. SCHEMATIC DIAGRAM

3.1 OVERALL CONNECTION DIAGRAM

A

		B			F
	HEADPHONE		ASSY	FRONT R ASSY
	AWX7114			AWX7124

B

D

AF ASSY

AWX7119(A-307R)

AWX7117(A-207R)

C

451

A

VOLUME ASSY

AWX7118

D

6

	1		2		3		4

	5		6		7		8

A-307R, A-207R

Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".

A

E

FRONT L ASSY

AWX7123

B

		C
	G	AC PRIMARY ASSY
		AWX7113
		(MYXJ/EW, MYXJ/GR, MVXJ)
	OPT ASSY	AWX7115
	AWX7125
		(SDXJ, SAMXJ)

AC POWER CORD

ADG1154 : MYXJ/EW, MYXJ/GR types

ADG1156 : MVXJ type

		ADG1158 : SDXJ type
	MYXJ/EW, MYXJ/GR,	MYXJ/EW, MYXJ/GR types
	MVXJ types	SDXJ type
	POWER TRANSFORMER	SAMXJ type
	ATS7188 : A-307R/MYXJ/EW, MYXJ/GR ( )
		ADG7018 : SAMXJ type
	ATS7190 : A-207R/MYXJ/EW, MYXJ/GR and NVXJ
	A-307R
	(13)
	(15)	A-307R/SDXJ, SAMXJ
	(17)

C

S2 : AKX-507

VOLTAGE

SELECTOR

POWER TRANSFORMER

ATS7189

D

7

	5		6		7		8

	1		2		3		4

A-307R, A-207R

3.2 VOLUME AND HEADPHONE ASSEMBLIES

A

B

HEADPHONE ASSY

AWX7114

D J551A

: AUDIO SIGNAL ROUTE

B

A VOLUME ASSY

AWX7118

C

D

D CN203

8 A B

E J3

	1		2		3		4

	1		2		3		4

A-307R, A-207R

3.3 AC PRIMARY ASSY

• NOTE FOR FUSE REPLACEMENT

CAUTION -FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.

REPLACE WITH SAME TYPE AND RATINGS ONLY.

	C AC PRIMARY ASSY		MYXJ/EW, MYXJ/GR, MVXJ types
	AWX7113 (MYXJ/EW, MYXJ/GR, MVXJ)
	AWX7115 (SDXJ, SAMXJ)		MYXJ/EW, MYXJ/GR, types
			SDXJ type
			SAMXJ type
	SDXJ, SAMXJ
	types
	REK1025	POWER
LIVE	T2AL250V
		S801
			TO
		ASG1035
TO POWER			AC POWER
	MYXJ/EW,		CORD
TRANSFORMER
	MYXJ/GR,
	MVXJ types

NEUTRAL

REK1025

T2AL250V

A-307R

SDXJ, SAMXJ

A

B

C

TO S2

VOLTAGE

SELECTOR

D

C 9

	1		2		3		4

	1		2		3		4

A-307R, A-207R

		3.4 AF ASSY
		: AUDIO SIGNAL ROUTE
	A
		AF ASSY
		D AWX7119 (A-307R)
		AWX7117 (A-207R)
		C313,C337 :
	B	IDLE ADJ.
		(L CH)
		C314,C338 :
	C
		IDLE ADJ.
		(R CH)
	D
		A CN501

10 D

	1		2		3		4