Denon SYS-T3L, SYS-C3L, SYS-A3L, SYSA2-1L, SC-T3L Service Manual

For U.S.A., Canada, Europe & Japan model

Ver. 2

SERVICE MANUAL

MODEL SYS-T3L/SYS-C3L SYS-A3L/SYS-A2.1L

SPEAKER SYSTEM PACK

SC-T3L/SC-A3L

SPEAKER SYSTEM

DSW-3L

SUPER WOOFER

●For purposes of improvement, specifications and design are subject to change without notice.

●Please use this service manual with referring to the operating instructions without fail.

●Some illustrations using in this service manual are slightly different from the actual set.

● ● 8

●

●

16-11, YUSHIMA 3-CHOME, BUNKYO-KU, TOKYO 113-0034 JAPAN

X0194V.02 DE/CDM 0311

SYS-T3L/SYS-C3L/SYS-A3L/SYS-A2.1L/SC-T3L/SC-A3L/DSW-3L 2

SAFETY PRECAUTIONS

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

LEAKAGE CURRENT CHECK

Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective.

500V

1M

(1)

(2)

(1)

(2)

2

SYS-T3L/SYS-C3L/SYS-A3L/SYS-A2.1L/SC-T3L/SC-A3L/DSW-3L	3

NOTE FOR PARTS LIST

l Part indicated with the mark " " are not always in stock and possibly to
take a long period of time for supplying, or in some case supplying of
part may be refused.
l When ordering of part, clearly indicate "1" and "I" (i) to avoid mis-
supplying.
l Ordering part without stating its part number can not be supplied.
l Part indicated with the mark " " is not illustrated in the exploded view.
l Not including Carbon Film Resister ±5%, 1/4W Type in the P.W.Board
parts list. (Refer to the Schematic Diagram for those parts.)
l Not including Carbon Chip Resister 1/16W Type in the P.W.Board parts	5% 1/4W
list. (Refer to the Schematic Diagram for those parts.)
WARNING:	1/16W

Parts marked with this symbol have critical characteristics.

Use ONLY replacement parts recommended by the manufacturer.

l Resistors

Ex.:

RN

14K

2E

182

G

FR

Type

Shape Power ResistAllowable

Others

and per-

ance

error

formance

RD

: Carbon

2B

: 1/8W

F

: ±1%

P

: Pulse-resistant type

RC

: Composition

2E : 1/4W

G

: ±2%

NL : Low noise type

RS

: Metal oxide film

2H : 1/2W

J

: ±5%

NB : Non-burning type

RW : Winding

3A : 1W

K

: ±10%

FR : Fuse-resistor

RN

: Metal film

3D : 2W

M

: ±20%

F

: Lead wire forming

RK

: Metal mixture

3F

: 3W

3H : 5W

] Resistance

1

8

2

1800 ohm = 1.8 kohm

s

s

Indicates number of zeros after effective number.

2-digit effective number.

• Units: ohm

1

R

2

1.2 ohm

s

s

1-digit effective number.

2-digit effective number, decimal point indicated by R.

• Units: ohm

RN

14K

2E

182

G

FR

RD

:

2B

: 1/8

W

F

:

±1%

P

:

RC

:

2E

: 1/4

W

G :

±2%

NL :

RS

:

2H

: 1/2

W

J

:

±5%

NB :

RW :

3A

: 1

W

K :

±10%

FR

:

RN

:

3D

: 2

W

M :

±20%

F

:

RK

:

3F

: 3

W

3H

: 5

W

18

2

Ö

1800

=1.8k

2

0

1R

2

1.2

Ö

1

2

R

l Capacitors

Ex.:

CE

04W

1H

2R2

M

BP

Type

Shape

Dielectric Capacity Allowable Others

and perstrength

error

formance

CE

: Aluminum foil

0J

: 6.3V

F

: ±1%

HS : High stability type

electrolytic

: ±2%

CA

: Aluminum solid

1A

: 10V

G

BP : Non-polar type

electrolytic

: ±5%

CS

: Tantalum electrolytic

1C

: 16V

J

HR : Ripple-resistant type

CQ : Film

1E

: 25V

K

: ±10%

DL : For change and discharge

CK

: Ceramic

1V

: 35V

M

: ±20%

HF : For assuring high

requency

CC : Ceramic

1H

: 50V

Z

: +80%

U

: UL part

CP

: Oil

2A

: 100V

–20%

C

: CSA part

CM : Mica

2B

: 125V

P

: +100%

W

: UL-CSA type

CF

: Metallized

2C

: 160V

–0%

F

: Lead wire forming

CH : Metallized

2D

: 200V

C

: ±0.25pF

2E

: 250V

D

: ±0.5pF

2H

: 500V

=

: Others

2J

: 630V

] Capacity (electrolyte only)

2

2

2

2200µF

s

s

Indicates number of zeros after effective number.

2-digit effective number.

• Units: µF.

2

R

2

2.2µF

s

s

1-digit effective number.

2-digit effective number, decimal point indicated by R.

• Units: µF.

] Capacity (except electrolyte)

2

2

2

2200pF=0.0022µF

s

s

(More than 2)

Indicates number of zeros after effective number.

2-digit effective number.

• Units: pF.

2

2

1

220pF

s

s

(0 or 1)

Indicates number of zeros after effective number.

2-digit effective number.

•Units: pF.

•When the dielectric strength is indicated in AC, "AC" is included after the dieelectric strength value.

CE

04W

1H

2R2

M

BP

CE

:

0J

: 6.3

V

F

: ±1%

HS

:

CA

:

1A

: 10

V

G

: ±2%

BP

:

CS

:

1C

: 16

V

J

: ±5%

HR :

CQ

:

1E

: 25

V

K

: ±10%

DL :

CK

:

1V

: 35

V

M

: ±20%

HF

:

CC

:

1H

: 50

V

Z

: +80%

U

:

UL

CP

:

2A

: 100 V

−20%

C

:

CSA

CM :

2B

: 125 V

P

: +100%

W :

UL-CSA

CF

:

2C

: 160 V

−

0%

F

:

CH

:

2D

: 200 V

C

: ±0.25pF

2E

: 250 V

D

: ±0.5pF

2H

: 500 V

=

:

2J

: 630 V

22

2

Ö

2200µF

2R

2

Ö

2.2µF

2

0

1

2

R

µF

µF

22

2

Ö

2200pF=0.0022µF

22

1

Ö

220pF

0

0

(0

2

)

(0

0

1

)

2

2

pF

pF

AC

3

SYS-T3L/SYS-C3L/SYS-A3L/SYS-A2.1L/SC-T3L/SC-A3L/DSW-3L 4

NOTE FOR SCHEMATIC DIAGRAM

WARNING:

Parts marked with this symbol ! have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.

!

CAUTION:

Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective.

(1)Ω Ω M MΩ

(2)F F

WARNING:

DO NOT return the unit to the customer until the problem is located and corrected.

NOTICE:

ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM

ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD

EACH VOLTAGE AND CURRENT ARE MEASURED AT NO SIGNAL INPUT CONDITION.

CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.

4

DSW-3L Section		SYS-T3L/SYS-C3L/SYS-A3L/SYS-A2.1L/SC-T3L/SC-A3L/DSW-3L	5

DISASSEMBLY
(Follow the procedure below in reverse order when reassem-
bling.)
1. Speaker Unit		1.
(1)	Remove 4 screws , detach the Base Board and Sup-	(1)	4
	porter.
(2)	Remove 4 screws , detach the Speaker Unit and Grille	(2)	4
	Ass’y.		Ass'y
(3)	Disconnect the Connector.	(3)

1 x 4

Base Board

Supporter

2 x 4

Grille Ass'y

Speaker Unit

Connector

2. AMP Ass’y	2. Ass'y
(1) Remove 10 screws , detach the AMP Ass’y.	(1) 10 Ass'y

3 x 10

AMP Ass'y

5

DSW-3L Section		SYS-T3L/SYS-C3L/SYS-A3L/SYS-A2.1L/SC-T3L/SC-A3L/DSW-3L	6

3. Rear Panel		3.
(1)	Remove 4 screws , detach the Rear Panel.	(1)	4
(2)	Disconnect the Connector.	(2)

4 x 4

Rear Panel

Connector

4.Heatsink Ass’y and Each Unit

(1)Remove 5 screws , detach the Heatsink Cover.

(2)Remove 6 screws , detach the Heatsink Ass’y.

(3)Remove 4 screws , detach the AMP Unit -1.

(4)Remove 2 screws , 1 screws and 2 screws , detach the AMP Unit -2.

5 x 5

Heatsink Cover Heatsink Ass'y

4.Ass'y

(1)5

(2)6 Ass'y

(3)4 AMP -1

(4)2 1 2 AMP -2

7 x 4

AMP Unit -1

6 x 6

9

8 x 2	AMP Unit -2
	10 x 2

6

DSW-3L Section		SYS-T3L/SYS-C3L/SYS-A3L/SYS-A2.1L/SC-T3L/SC-A3L/DSW-3L	7

5.Per-amp Unit

(1)Detach the 2 VR Knob. remove 2 Nut and 2 Washer.

(2)Remove 2 screws , detach the Pre-amp Unit.

VR Knob

Nut

Washer

(1)2 22

(2)2

11 x 2

Pre-amp Unit

6.Each Unit

(1)Remove 2 screws , detach the Sub trans Unit.

(2)Remove 5 screws , detach the Main trans Unit.

(1)2

(2)5

13 x 5

12 x 2

Sub Trans Unit

Main Trans Unit

7

BLOCK / LEVEL DIAGRAM

NORMAL

LINE INPUT

IC501

IC501

REVERSE PHASE

(dB)

LINE

INPUT

	40
	20	+13dB
	0	53mV
	-10
LINE	(dB)
INPUT	40
DIRECT
MODE	20	+13dB
	0	0.54V
	-10

DSW-3L Section		SYS-T3L/SYS-C3L/SYS-A3L/SYS-A2.1L/SC-T3L/SC-A3L/DSW-3L	8

	CROSSOVER	VOL	S401	POWER AMP
	CONTROL				SPEAKER
			DIRECT
			MODE SW
				IC601
				ALC
	DIRECT MODE
	ATT

+51dB

at 55Hz

+12dB

+32dB

at 55Hz

-1dB

8

DSW-3L Section		SYS-T3L/SYS-C3L/SYS-A3L/SYS-A2.1L/SC-T3L/SC-A3L/DSW-3L	9

PRINTED WIRING BOARDS

MAIN P.W.B. UNIT

COMPONENT SIDE

9

	DSW-3L Section		SYS-T3L/SYS-C3L/SYS-A3L/SYS-A2.1L/SC-T3L/SC-A3L/DSW-3L					10

FOIL SIDE

10