Pioneer A-109 Service Manual

STEREO AMPLIFIER

A-109

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

ORDER NO.

RRV2284

Type

MYXJ AC220-230V –––––
MVXJ AC220-230V –––––
MLXJ AC220-230V –––––

SBDXJ AC110V/120-127V/220V/240V With the voltage selector

Model

A-109 the following method.

Power Requirement

The voltage can be converted by

¶ This service manual should be used together with the following manual(s):

Model No. Order No. Remarks

A-209R/MYXJ RRV2283

CONTENTS

1. CONTRAST OF MISCELLANEOUS PARTS

2. SCHEMATIC DIAGRAM

PIONEER 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 EUROPE N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

PIONEER CORPORATION 2000

.......................................

........

2
4

T – ZZK APR. 2000 Printed in Japan

A-109

1. CONTRAST OF MISCELLANEOUS PARTS

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.
Screws adjacent to mark on product are used for disassembly.
Reference Nos. indicate the pages and Nos. in the service manual for the base model.

When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).

560
47k

0.5
1

56 x 10
47 x 103
R50
1R0

1

561
473

RD1/4PU J
RD1/4PU J
RN2H K
RS1P K

561
473

R50

1R0

Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).

5.62k RN1/4PC F562 x 10

CONTRAST T ABLE

1

5621

5621

A-109/MYXJ, MVXJ, MLXJ, SBDXJ and A-209R/MYXJ are constructed the same except for the following :

Part No.

Ref. No. Mark Symbol and Description A-209R A-109 A-109 A-109 A-109 Remarks

/MYXJ /MYXJ /MVXJ /MLXJ /SBDXJ

PCB ASSEMBLIES

P5- 1 FRONT L ASSY AWX7123 AWX7120 AWX7120 AWX7120 AWX7120 ∗1
P5- 2 FRONT R ASSY AWX7124 AWX7121 AWX7121 AWX7121 AWX7121 ∗2
P5- 3 OPT ASSY AWX7125 Not used Not used Not used Not used

P5- 4 AC PRIMARY ASSY AWX7113 AWX7113 AWX7113 AWX7113 AWX7670 ∗2
P5- 5 NSP HEADPHONE ASSY AWX7114 AWX7114 AWX7114 AWX7114 AWX7114
P5- 6 VOLUME ASSY AWX7118 AWX7112 AWX7112 AWX7112 AWX7112 ∗2
P5- 7 AF ASSY AWX7117 AWX7111 AWX7111 AWX7111 AWX7111 ∗1

P3- 1 Operating Instructions (English) ARB7236 ARB7237 ARB7237 Not used Not used
P3- 2 Operating Instructions (German) ARC7322 ARC7324 Not used Not used Not used
P3- 3 Operating Instructions (French/Italian/ ARC7323 ARC7325 Not used Not used Not used

P3- 4 NSP Warranty Card ARY7022 ARY7022 ARY7022 Not used Not used
P3- 5 Remote Control Unit (CU-A019) AXD7193 Not used Not used Not used Not used

P3- 6 Battery Cover AZN2249 Not used Not used Not used Not used

P3- 7 NSP Dry Cell Battery (R6P,AA) VEM-013 Not used Not used Not used Not used
P3-11 Packing Case AHD7869 AHD7872 AHD7872 AHD7873 AHD7892
P3-14 Operating Instructions Not used Not used Not used ARE7269 ARE7269

P3-15 Caution Label 220V Not used Not used Not used Not used ARR1003
P3-16 AC Plug Adapter Not used Not used Not used Not used VKX1007
P3-17 NSP Air Cap Not used Not used AHG1087 Not used Not used
P3-18 Power Cord ADG1154 ADG1154 Not used ADG1154 ADG1154
P3-19 Power Cord with Fuse Not used Not used ADG1156 Not used Not used

P3-20 Fuse (T5A) Not used Not used AEK1046 Not used Not used

P5- 8 Fuse (FU1 : 1.25A) REK1023 Not used Not used Not used Not used

P5- 8 Fuse (FU1 : 800mA) Not used REK1021 REK1021 REK1021 Not used

P5- 8 Fuse (FU1 : 6.3A) Not used Not used Not used Not used REK1030
P5-11 Power Transformer (AC220-230V) A TS7190 ATS7192 ATS7192 ATS7192 Not used
P5-11 Power Transformer Not used Not used Not used Not used ATS7193

NSP CONTROL ASSY AWG7013 AWG7011 AWG7011 AWG7011 AWG7011

NSP AF COMPLEX ASSY AWM7357 AWM7353 AWM7353 AWM7353 AWM7509

PACKING SECTION

Dutch/Swedish/Spanish/Portuguese)

(English/Spanish/Chinese)

EXTERIOR SECTION

(AC110V/120-127V/220V/240V)

P5-13 Rear Panel ANC7925 ANC7931 ANC7931 ANC7933 ANC7934
P5-14 Insulator PNW2766 PNW2766 PNW2766 AMR7198 AMR7198
P5-25 NSP Shield Plate ANK7043 Not used Not used Not used Not used
P5-28 IR Filter AAK7532 Not used Not used Not used Not used
P5-38 Front Panel AMB7710 AMB7712 AMB7712 AMB7712 AMB7712

2

A-109

Part No.

Ref. No. Mark Symbol and Description A-209R A-109 A-109 A-109 A-109 Remarks

/MYXJ /MYXJ /MVXJ /MLXJ /SBDXJ

P5-42 Voltage Selector (S2) Not used Not used Not used Not used AKX-507
P5-43 Fuse (FU2, FU3 : 800mA) Not used Not used Not used Not used REK1021
P5-44 PVC Cover Not used AAK7541 AAK7541 AAK7541 AAK7541
P5-45 Foot Not used REC1263 REC1263 REC1263 REC1263

∗1 : Refer to “ 7 CONTRAST OF PCB ASSEMBLIES ” and “ 2. SCHEMATIC DIAGRAM ”.
∗2 : Refer to A-209/SBDXJ on the service manual RRV2283.

CONTRAST OF PCB ASSEMBLIES

AF ASSY

D

F

AWX7111 and AWX7117 are constructed the same except for the following :

Mark Symbol and Description

Q335, Q336 DTC143ES Not used
Q337, Q338 2SA1162 Not used
Q339, Q340 2SC2712 Not used
Q341 2SC5174P Not used
D341 UDZS5.1B Not used

D402 1SS355 Not used
D451 D5SBA20 D3SBA20
RY402 ASR7014 Not used
C301, C302, C305, C306 CEBA100M50 CEAT100M50
C307, 308 CEBA221M25 CEAT221M25

C334 CEANP221M16 Not used
C335, C336 CEAT100M50 Not used
C451 ACH7080 ∗1 ACH7082 ∗2 ∗1: 6800µF/42V
C452 ACH7081 ∗1 ACH7083 ∗2 ∗2: 4700µF/42V
C472 CKSQYF473Z50 Not used

R301, R302 RDR1/4VM240J Not used
R303, R304 RDR1/4VM561J Not used
R313, R314 Not used RS1/10S240J
R315, R316 Not used RS1/10S561J
R385–R388 RS1/10S473J Not used

R389, R390 RS1/10S471J Not used
R391, R392 RS1/10S102J Not used
R393 RS1/10S153J Not used
R460 RS1/10S2R2J Not used
401 SPEAKER TERMINAL AKE1011 ∗3 AKE1054 ∗4 ∗3: 8P, ∗4: 4P

HEAT SINK B ANH1021 Not used
JA401 REMOTE CONTROL JACK RKN1004 Not used

AWX7117 AWX7111

Part No.

Remarks

FRONT L ASSY

E

F

AWX7120 and AWX7123 are constructed the same except for the following :

Mark Symbol and Description

Q703, Q704 DTC124EK Not used
Q705 2SC2712 Not used
D702 Not used SLP9118C51H
D703, D705 SLP9118C51H Not used
D704 1SS355 Not used

S701 Not used VSG1009
S703, S704 VSG1009 Not used
R705 RS1/10S271J Not used
R708 RS1/10S472J Not used
R709 RS1/10S223J Not used

1603 3P CABLE HOLDER 51063-0305 Not used
J603 JUMPER WIRE DA15A03-100-2651 Not used

AWX7123 AWX7120

Part No.

Remarks

3

1

23

A-109

2. SCHEMATIC DIAGRAM

2.1 AF ASSY

4

A

1k

1k

B

: AUDIO SIGNAL ROUTE

AF ASSY

D

D

F

AWX7111

C313,C337 :

IDLE ADJ.

(L CH)

C314,C338 :

C

IDLE ADJ.

(R CH)

D

CN501

4

D

F

1234

A

5

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

IRF530(S)

678

CAUTION : FOR CONTINUED PROTECTION AGAINST
RISK OF FIRE. REPLACE ONLY WITH
SAME TYPE NO. 491001 MFD, BY
LITTELFUSE INK. FOR IC454 (AEK7009).

ACH7082

C451

(4700/42)
ACH7083

C452

(4700/42)

A-109

A

B

IRF9530(S)

IRF530(S)

IRF9530(S)

Q333–Q334:

R361–R366:

C321–C324:

TO POWER

TRANSFORMER

C

F

5

CN601

D

J551

B

F

5

D

6

7

8

1

A-109

2.2 FRONT L ASSY

A

23

E

E

F

FRONT L ASSY

AWX7120

4

B

J602

F

VSG1009

VSG1009

CN502

A

C

D

FRONT L ASSY
S701 : SPEAKER A
S702 : LOUDNESS

6

E

F

1234

VOLUME

LOUDNESS DIRECT

MIN MAX

TAPE 1

TUNER

CD

BALANCE

L

R

TAPE 2

LINE

PHONO

/CD-R/MD

MONITOR

INPUT SELECTOR

TAPE 2
MONITOR

—

A SPEAKERS B

STEREO AMPLIFIER

z¿<?/B

Î

POWER

OFF ON

_

PHONES

Direct Energy MOS

BASS

TREBLE

–

–

+

+

STEREO AMPLIFIER

A-209R

A-209

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

Type

A-209R A-209 the following method.

Model

Power Requirement

MYXJ – AC220-230V –––––
MVXJ – AC220-230V –––––
MLXJ – AC220-230V –––––

SBDXJ – AC110V/120-127V/220V/240V With the voltage selector

The voltage can be converted by

ORDER NO.

RRV2283

CONTENTS

1. SAFETY INFORMATION

2. EXPLODED VIEWS AND PARTS LIST

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

4. PCB CONNECTION DIAGRAM

5. PCB PARTS LIST

6. ADJUSTMENT

...............................................

....................................................

PIONEER 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 EUROPE N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

c

PIONEER CORPORATION 2000

......................................

...............

.....

.........................

16
24
27

2
3
6

7. GENERAL INFORMATION

7.1 DISASSEMBLY

7.2 IC

..................................................................

8. PANEL FACILITIES AND SPECIFICATIONS

................................

............................................

.......

T – ZZK APR. 2000 Printed in Japan

28
28
29
30

A-209R, A-209

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians ; it is not meant for the casual do-it­yourselfer. 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
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause
cancer, birth defects or other reproductive harm.

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.

Health & Safety Code Section 25249.6 – Proposition 65

(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
not be above

0.5mA

Earth
ground

Device
under
test

Also test with
plug reversed
(Using AC adapter
plug as required)

Test all
exposed metal
surfaces

Leakage
current
tester

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
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.

on the schematics and on the parts list

AC Leakage Test

2

A-209R, A-209

2. EXPLODED VIEWS AND PARTS LIST

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

2.1 PACKING

MVXJ type Only

19

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.

•

(1) PACKING PARTS LIST

20

17

12

13

8

10

FRONT

16 (SBDXJ
type Only)

Except
MVXJ type

18

6

7

1 (MYXJ and
MVXJ types
Only)

9

5

15
(SBDXJ type
Only)

2 (MYXJ type
Only)

3 (MYXJ type
Only)

4 (MYXJ and
MVXJ types
Only)

14 (MLXJ and
SBDXJ types
Only)

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-A019) See Contrast table(2)
6 Battery Cover See Contrast table(2)

NSP 7 Dry Cell Battery (AA/R6P) See Contrast table(2)

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)

(English/Spanish/Chinese)
15 Caution Label 220V See Contrast table(2)
16 AC Plug Adapter 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)

11

(2) CONTRAST TABLE

A-209R/MYXJ, MVXJ, A-209/MLXJ and SBDXJ are constructed the same except for the following :

Part No.

Mark No. Symbol and Description A-209R A-209R A-209 A-209 Remarks

/MYXJ /MVXJ /MLXJ /SBDXJ

1 Operating Instructions (English) ARB7236 ARB7236 Not used Not used
2 Operating Instructions (German) ARC7322 Not used Not used Not used
3 Operating Instructions (French/Italian/ ARC7323 Not used Not used Not used

Dutch/Swedish/Spanish/Portuguese)

NSP 4 Warranty Card ARY7022 ARY7022 Not used Not used

5 Remote Control Unit (CU-A019) AXD7193 AXD7193 Not used Not used
6 Battery Cover AZN2249 AZN2249 Not used Not used

NSP 7 Dry Cell Battery (AA/R6P) VEM-013 VEM-013 Not used Not used

11 Packing Case AHD7869 AHD7869 AHD7870 AHD7891
14 Operating Instructions Not used Not used ARE7269 ARE7269

(English/Spanish/Chinese)

15 Caution Label 220V Not used Not used Not used ARR1003
16 AC Plug Adapter Not used Not used Not used VKX1007

NSP 17 Air Cap Not used AHG1087 Not used Not used

18 Power Cord ADG1154 Not used ADG1154 ADG1154
19 Power Cord with Fuse Not used ADG1156 Not used Not used

20 Fuse (T5A) Not used AEK1046 Not used Not used

3

A-209R, A-209

2.2 EXTERIOR

36

39

26

39

28 or 44

38

30

39

18

37

41

34

16

35

27

26

39

39

SBDXJ
Type Only

3

MYXJ,
MVXJ
Types Only

1

5

41

MYXJ,

25

MVXJ
Types Only

11

39

2

9

6

17

43

39

15

8

4

15

15

7

13

42

39

15

SBDXJ
Type Only

39

39

39

31

33

31

32

27

39

48

49

29

46

47

12

46

14

46

39

17

22

19

21

19

21

23

39

14

23

23

39

45

14

40

MLXJ,
SBDXJ

MYXJ,
MVXJ

4

A-209R, A-209

(1) EXTERIOR PARTS LIST

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

1 FRONT L Assy See Contrast table(2)
2 FRONT R Assy See Contrast table(2)
3 OPT Assy See Contrast table(2)
4 AC PRIMARY Assy See Contrast table(2)

NSP 5 HEADPHONE Assy AWX7114

6 VOLUME Assy See Contrast table(2)
7 AF Assy See Contrast table(2)

8 Fuse (FU1) See Contrast table(2)

9 Flexible Cable (19P) ADD7032

(AF CN202-FRONT R CN601)

10 • • • • •

11 Power Transformer (T1) See Contrast table(2)
NSP 12 Chassis ANA7064

13 Rear Panel See Contrast table(2)
14 Insulator See Contrast table(2)
15 Screw (3 × 8) ABA1018

16 Screw (3 × 8) ABA1027
17 Screw (4 × 10) ABA7047
18 Nut ABN-065
19 PCB Support AEC7006
20 • • • • •

NSP 21 PCB Holder AEC7057
NSP 22 Cord Clamp F AEC7134

23 PCB Mold AMR2533
24 • • • • •

NSP 25 Shield Plate See Contrast table(2)

26 Screw (3 × 8) PBA1096
27 LED Lens AAK2459
28 IR Filter See Contrast table(2)
29 LED Lens A AAK7537
30 Name Plate PAM1776

31 Rotary Knob A AAB7148
32 Rotary Knob B AAB7149
33 Volume Knob AAB7150
34 Speaker Button AAD7435
35 Power Joint AAD7439

36 Bonnet Case ANE7183
37 Panel Base AMB7489
38 Front Panel See Contrast table(2)
39 Screw BBZ30P080FZK
40 Screw BCZ30P060FCC

41 Nut NK90FUC

42 Voltage Selector (S2) See Contrast table(2)
43 Fuse (FU2, FU3 : 1.25A) See Contrast table(2)

44 PVC Cover See Contrast table(2)
45 Foot See Contrast table(2)

46 Spacer ABF7004
47 Transformer Plate ANG7312

NSP 48 Sub Frame ANG7313

49 Screw IBZ30P120FCC

(2) CONTRAST TABLE

A-209R/MYXJ, MVXJ, A-209/MLXJ and SBDXJ are constructed the same except for the following :

Part No.

Mark No. Symbol and Description A-209R A-209R A-209 A-209 Remarks

/MYXJ /MVXJ /MLXJ /SBDXJ

1 FRONT L Assy AWX7123 AWX7123 AWX7122 AWX7122
2 FRONT R Assy AWX7124 AWX7124 AWX7121 AWX7121
3 OPT Assy AWX7125 AWX7125 Not used Not used
4 AC PRIMARY Assy AWX7113 AWX7113 AWX7113 AWX7670
6 VOLUME Assy AWX7118 AWX7118 AWX7112 AWX7112

7 AF Assy AWX7117 AWX7117 AWX7116 AWX7116
8 Fuse (FU1 : 1.25A) REK1023 REK1023 REK1023 Not used

8 Fuse (FU1 : 6.3A) Not used Not used Not used REK1030
11 Power Transformer (AC220-230V) ATS7190 ATS7190 ATS7190 Not used
11 Power Transformer Not used Not used Not used ATS7191

(AC110V/120-127V/220V/240V)

13 Rear Panel ANC7925 ANC7925 ANC7927 ANC7928

NSP 25 Shield Plate ANK7043 ANK7043 Not used Not used

14 Insulator PNW2766 PNW2766 AMR7198 AMR7198
28 IR Filter AAK7532 AAK7532 Not used Not used

38 Front Panel AMB7710 AMB7710 AMB7711 AMB7711
42 Voltage Selector (S2) Not used Not used Not used AKX-507

43 Fuse (FU2, FU3 : 1.25A) Not used Not used Not used REK1023
44 PVC Cover Not used Not used AAK7541 AAK7541
45 Foot Not used Not used REC1263 REC1263

5

1

23

A-209R, A-209

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

A

3.1 BLOCK DIAGRAM

4

CN101
CN102

2.8mV

PHONO

/50kΩ

TUNER

CD

200mV
/50kΩ

LINE
TAPE1

/CD-R

200mV
/1kΩ

200mV
/50kΩ

200mV
/1kΩ

/MD
REC

TAPE2

MONITOR

REC

B

IC151

RIAA

31

37dB

Q101

Q103

26

24

25

FUNCTION

27

24

24

D

AF ASSY

IC101

19

18

17

CN203

20

12 12

CN501

Q501
Q503

LOUDNESS

CN501

CN203

UP/DOWN

ON/OFF

VOLUME

M

VR501

1, 2

1, 2

Q337-Q340

F

Q331, Q327, Q328

C

D

D

FROM UNUSUAL
OUTPUT DETECTION

KEY INPUTS

S602, S603
S702–S704

E

FROM FUNCTION SEL

S601

604

G

FRONT R ASSY

23, 24,
36, 40,

µ-COM

42

IC601

32, 33

137

TO FUNCTION SW

2, 3, 438

DIRECT, LOUDNESS ON/OFF

12, 15

VOLUME UP/DOWN

30, 31

FUNC MUTE ON/OFF

17

TO PROTECTION RYSR INPUT

IC101

D

Q501–Q514

A

Q337–Q340

D

Q303

D

Q334, Q336

D

6

1234