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