Denon SYS-65HT, SYS-55HT, SC-C65, SC-A65, DSW-65 Service Manual

For U.S.A., Canada &

Europe model

SERVICE MANUAL	Ver. 2

MODEL SYS-65HT

SYS-55HT

SPEAKER SYSTEM PACK

SC-C65/SC-A65

SPEAKER SYSTEM

DSW-65

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

●

●

TOKYO, JAPAN

X0211V.02 DE/CDM 0409

SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65

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.

	500
	1 Ω
(1)

(2)

さい。特に配線図、部品表に

	(1) …
	(2) …

2

SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65

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

NOTE FOR SCHEMATIC DIAGRAM

WARNING:

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

SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65

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.

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.

(1)Ω Ω M MΩ

(2)F F

4

5

LINE

INPUT

LINE

INPUT DIRECT MODE

				NORMAL
				U203
LINE INPUT		CROSSOVER	VOL	SW202 REVERSE PHASE	POWER AMP SPEAKER
	U201	CONTROL
				DIRECT
		HPF		MODE SW	U203
					ALC
		DIRECT MODE
		ATT		+50.5dB 20V/4ohrm THD 0.7% (ALCON)
(dB)					at 55Hz
40		+20dB
20		+4.34dB
75mV
0
-10	-1dB
(dB)				+27.2dB 20V/4ohrm THD 0.7% (ALCON)
					at 55Hz
40		+4.34dB
20			+1.84dB
830mV
0
-10	-1dB

65-A65/DSW-C65/SC-55HT/SC-65HT/SYS-SYS Section 65-DSW

DIAGRAM LEVEL / BLOCK

DSW-65 Section		SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65

PRINTED WIRING BOARDS

AMP P.W.B. UNIT

6

DSW-65 Section		SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65

PREAMP P.W.B. UNIT

POWER P.W.B UNIT.

7