Onkyo DTM 5.3 Schematic

DTM-5.3

SERVICE MANUAL

Ref. No. 3729

Standby/On

Standby

Speakers

A

Phones

SERVICE MANUAL

Apl., 2002

AV RECEIVER

MODEL DTM-5.3

1 ABC 2 DEF 3 GHI

5 MNO 6 PQR

4 JKL

-

7 STU 8 VWX 9 YZ

/10/

Direct Tuning 0

B

Zone 2 Off

Display

Video

Direct Tuning

Tape 2

Tape 1

Monitor

FM

AM Phono CDDVD

Scan

Clear

Character

Memory

FM Mode

Black model

Master Volume

Bass

Treble Balance

R

L

DTM-5.3

RC-477S

120V AC, 60HzBMDD

SAFETY-RELATED COMPONENT
WARNING!!

COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

SPECIFICATIONS

DTM-5.3

AMPLIFIER SECTION

Power Output: 100 Watts per channel, min RMS, at 8 ohms,

both channels driven from 20 Hz to 20 kHz,
with no more than 0.08% THD.

Dynamic power output: 2

Total Harmonic Distortion: 0.08% at rated power

IM Distortion: 0.08% at rated power

Damping Factor: 60 at 8 ohms
Input Sensitivity and Impedance

PHONO: 2.5 mV, 50 kohms
Line (CD, TAPE-1, 2,

VIDEO, DVD): 150 mV, 50 kohms

Video (VIDEO, DVD) 1 Vp-p, 75 ohms

Output Level and Impedance

Line (TAPE-1, 2,

VIDEO): 150 mV, 2.2 kohms

Video (VIDEO,

MONITOR): 1 Vp-p, 75 ohms

Zone 2: 150 mV, 22 kohms
Phono Overload: 120 mV RMS. at 1 kHz, 0.5% T.H.D.
Frequency Response: 20 Hz to 30 kHz : ±1 dB
RIAA Deviation: 20 Hz to 20 kHz : ±0.8 dB
Tone Control

Bass: ±10 dB at 100 Hz

Treble: ±10 dB at 10,000 Hz
Signal-to-Noise Ratio

Phono: 80 dB (IHF A, 5 mV input)

CD/Tape: 100 dB (IHF A)
Muting: -50dB

× 170 Watts at 2 ohms

2 × 135 Watts at 4 ohms
2 × 140 Watts at 8 ohms

0.08% at 1 watt output

0.08% at 1 watt output

Image Rejection Ratio: 40 dB
IF Rejection Ratio: 90 dB
Signal-to-Noise Ratio

Mono: 76 dB, IHF
Stereo: 70 dB, IHF

Alternate Channel Att. (±400 kHz)

Mono: 55 dB, IHF
Selectivity: 55 dB DIN (±300 kHz 40 kHz Devi.)
AM Suppression Ratio: 50 dB
Total Harmonic Distortion

Mono: 0.15%

Stereo: 0.25%
Frequency Response: 30 Hz to 15 kHz, ±1.5 dB
Stereo Separation: 45 dB at 1 kHz

30 dB at 100 Hz to 10 kHz

Stereo Threshold: 17.2 dBf, 2.0 µV (75 ohms)

AM

Tuning Range: 530 to 1,710 kHz (10 kHz steps)
Usable Sensitivity: 30 µV
Image Rejection Ratio: 40 dB
IF Rejection Ratio: 40 dB
Signal-to-Noise Ratio: 40 dB
Total Harmonic Distortion: 0.7%

GENERAL

Power Supply: AC 120 V, 60 Hz
Power Consumption: 2.8 A
Dimensions (W

Weight: 19.8 lbs. (9.0 kg)

× H × D): 17-1/8" × 5-7/8" × 13-7/16"

435 × 150 × 341 mm

TUNER SECTION
FM

Tuning Range: 87.5 to 108.0 MHz (100 kHz steps)
Usable Sensitivity

Mono: 11.2 dBf, 1.0 µV (75 ohms IHF)

0.9 µV (75 ohms DIN)

Stereo: 17.2 dBf, 2.0 µV (75 ohms IHF)

23 µV (75 ohms DIN)

50 dB Quieting Sensitivity

Mono: 17.2 dBf, 2.0 µV (75 ohms)
Stereo: 37.2 dBf, 20 µV (75 ohms)

Capture Ratio: 2.0 dB

REMOTE CONTROLLER (RC-477S)

Transmitter: Infrared
Signal range: Approx. 16 ft., 5 meters
Power supply: Two "AA" batteries (1.5 V

× 2)

Specifications and features are subject to change without notice.

SERVICE PROCEDURES

1. Replacing the fuses

This symbol located near the fuses indicates that the
fuse used is fast operating type. For continued protection against
fire hazard, replace with same type fuse. For fuse rating refer to
the marking adjacent to the symbol.

Ce symbole indique que le fusible utlise est a rapide.
Pour une protection permanente, n'untiliser que fusibles de
meme type. Ce darnier est la qu le present symbol est
appse.

CIRCUIT NO. PART NO. DESCRIPTION

F901

252258 or
252164

2. To initialize the unit

This device employs a microprocessor to perform various
functions and operations. If interference generated by an external
power supply, radio wave, or other electrical source results in
accident which causes the specified operations and functions to
operate abnormally.
To perform a result, please follow the procedure below.

5A-T/UL-ST2 or
5A-UL/T-237

DTM-5.3

1.Press and hold down the DVD button, then press the
Speakers A button.

2.After "CLEAR" is displayed, the preset memory and each
mode stored in the memory, such as surround, are
initialized and will return to the factory setting.
Unplug the power supply cord from outlet.

3. Safety-check out

After correcting the original service problem, perform the
following safety check before releasing the set to the customer.
Connect the insulating-resistance tester between the plug of power
supply cord and screw on the back panel.
Specifications: 3.3Mohm+/-10% at 500V.

4. Memory Preservation

This unit does not require memory preservation batteries. A
built-in memory power back-up system preserv es the contents
of the memory during power failures and e v en when the unit is
unplugged. The unit must be plugged in order to char ge the
back-up system.
The memory preservation period after the unit has been
unplugged v aries depending on climate and placement of the
unit. On the average, memory contents are protected over a
period of a fe w weeks after the last time the unit has been
unplugged. This period is shorter when the unit is e xposed to a
highly humid climate.

EXPLODED VIEW

42

41

41

22

43

19

25

DTM-5.3

U13

41

30

44

F901

U8

U2

24

U10

U6

U3

E811

9

U7

U11

13

Q523

U5

P710

11

4

Q526

D911

4

15

E801

U1

3

U4

37

P701

27

1

4

28

38

35

U12

2

T901

29

5

32

6

8

7

33

34

40

39

41

36

DTM-5.3

DTM-5.3

A

EXPLODED VIEW

PARTS LIST

1

2

3

4

5

BCD

REF.NO. PART NO. DESCRIPTION

1 27111267 Front bracket
2 28325756 Knob, standby
3 27141787 Retainer HP
4 838130088 3TTB+8B,Self-tapping screw
5 27100321B Chassis
6 27190991 Holder
7 27190511 KGLS-16RF,Holder
8 27190266 KGLS-12RF,Holder

9 830440089 4TTC+8C(BC),Self-tapping screw
10 27160379 Heat sink
11 27141530A Retainer HS-2
13 27141671 Retainer
15 801433 3SMS8W.SW+14B(BC),Special screw
19 27122952 Rear panel
22 87643010 W3*10F(BC),Flat washer
24 29362609 Label PT
25 29110083 Tape, cloth
27 27191166 Holder, plate
28 28191956 Clear plate
29 28133401 Back plate
30 28184663-1 Top cover
32 27175319B Leg
33 28141332 Cushion
34 831430088 3TTW+8B(BC),Self-tapping screw
35 28325984 Knob, volume
36 28325405 Knob, tone
37 29362772 Label, cover
38 27212367 Front panel
39 28135278 Badge
40 28198905 Facet

41 838430088 3TTB+8B(BC),Self-tapping screw
42 838930088 3TTB+8B(UN),Self-tapping screw
43 838430068 3TTB+6B(BC),Self-tapping screw
44 838440089 4TTB+8C(BC),Self-tapping screw

D911 22380130, D5SBA20,

22380274 or RS603M or

22380038 RBV602,Diode
E801 260208 Wire tie
E811 223025 AC262,Isolated plate
F901 252258 or ! 5A-T/UL-ST2 or

252164 ! 5A-UL/T-237,Fuse
P701 2047332012 NCFC7-332012,FF cable
P710 2047152012 NCFC7-152012,FF cable

Q523,Q524 2202823 * 2SC5200-O or

2202822 * 2SC5200-R,Transistor

Q525,Q526 2202813 or * 2SA1943-O or

2202812 * 2SA1943-R
T901 2301216 ! NPT-1281D,Power transformer

U1 1A137586-1A NADIS-7386-1A,Display circuit PC board ass'y
U2 1A137587-1A NAPS-7387-1A,Primary circuit PC board ass'y
U3 1A137588-1A NAVD-7388-1A,Video terminal PC board ass'y
U4 1A137589-1A NAETC-7389-1A,Volume PC board ass'y
U5 1A137590-1A NAETC-7390-1A,Headphone terminal PC board ass'y
U6 1A137591-1A NAETC-7391-1A,Terminal PC board ass'y
U7 1A137592-1A NAETC-7392-1A,Control terminal PC board ass'y
U8 1A137593-1A NAETC-7393-1A,AC inlet PC board ass'y
U9 1A137595-1A NAAF-7395-1A,Main circuit PC board ass'y

U10 1A137596-1A NASW-7396-1A,Impedance switch PC board ass'y

DTM-5.3

7

5

3

1

A

BLOCK DIAGRAM 1

NAAF-7395 (SCH.-2)

1

AUDIO INPUT

PHONO L

R

CD L

R

TAPE-1 REC L

R

TAPE-1 PLAY L

2

R

TAPE-2 REC L

R

TAPE-1 PLAY L

U13

FM/AM TUNER

PACK

BCD

TC9162AN
TC9274N-008

NAETC-7392

(SCH.-1)

MUTE

MUTE

S

12V

TRIGGER

CONTROL

IR

DE-MODULATOR

IR 56K

RE-MODULATOR

IR

DE-MODULATOR

2
4
6
8

12V

I

R

DVD L

ZONE2 L

-6dB

-6dB

R

3

VIDEO OUT L

R

VIDEO IN L

R

RIGHT

REC/Z2

U7

SW-OUT

+5.6V

STANDBY

U9

4

VIDEO IN

VIDEO OUT

LA7956

DVD IN

MONITOR

+12V

AUDIO

-27V

-VP

-12V

AUDIO

5

U3

SUBWOOFER

RI

RI
INTER­FACE

NAVD-7388 (SCH.-1)

N

DTM-5.3

A

BLOCK DIAGRAM 2

56K
IR OUT

1

2

40K
IR OUT 1

40K

IR OUT 2

1

2

3

4

5

A-BUS

6

7

8

ZONE A

DC24V
4A IN

OUT

12V TRIGGER

IN

IRIN

U4

FLT

BCD

NAETC-7390 (SCH.-1)

SPEAKER B

U5

SPEAKER A

HEADPHONE

LEFT

RIGHT

LEFT

RIGHT

BOOST

BYPASS

BYPASS

BALANCE

U12

Zone 2 LED
Rec Out LED

MUTE

MUTE

Power Amplifier

+29dB

+29dB

SUBWOOFER

INTERFACE

IR OUT

E2 LINEOUT

L

R

3

MAIN
MICROPROCESSOR

U1

NADIS-7386(SCH.-1)

NAPS-7387
(SCH.-2)

REMOTE SENSOR

RELAY
DRIVER

MUTE

SW-OUT

RELAY

DRIVER

T902

U8

F901

U10

NASW-7396(SCH.-2)

IMPEDANCES

SELECTOR

4

MAIN AMP

+B1/-B1

RELAY
+B2

FL TUBE

S911

FLAC

FLAC

NAETC-7397

(SCH.-2)

T901

5A/125V

AC OUTLET

TV-5

U2

NAETC-7393
(SCH.-2)

AC IN

U11

5