Onkyo PTS 303 Service Manual

Page 1

PTS-303/505/707
PTS-307/507/707

Ref. No.3546-2

ONKYO® SERVICE MANUAL

Personal Theater System
FM STEREO/AM TUNER AV AMPLFIER

PTS-303I307/505/507/707
(RY-303/307/505/507f707)

PTS-303/5 05/707
(RY-303/505/707)

UDN

120V,60Hz
U.S.A model

(RY-307/507/707)

PTS-303/505/707 UM

220V/230V»240V,50Hz
Asian model

SAFETY-RELATED COMPONENT WARNINGII
COMPONENTS IDENTIFIED BY MARK A 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.

TABLE OF CONTENTS

SERVICE PROCEDURES ..
SPECIFICATIONS ...............
ADJUSTMENT PROCEDURE ..

.. 2
..2
3

EXPLODED VIEW .....................
EXPLODED VIEW PARTS LIST
MICROPROCESSOR CONNECTION DIAGRAM I
TERMINAL DESCRIPTION .......................
IC BLOCK DIAGRAMS

PRINTED CIRCUIT BOARD PARTS LIST I

.. 14
15
16
17
18
22

SCHEMATIC DIAGRAMS ...................... 31

ONKYOg
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_1_

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TS-303/505/707
TSr307/507/707

SERVICE PROCEDURES

1.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 chassis.

Specifications : More than 10 Mohm at 500V.

2. Replacing the fuses
For continued protection against fire hazard, replace only
with same type and same rating fuse.

Circuit No. Part No Description
F551 40035-1 T2.5A/250V
model RY-707
4-0039-1 TSA/ZSOV
mode] RY»707
4-0040v1 T4A/250V
model RY-303/505
F552 4-0041<1 T4A/250V
model RY-307/507
4-0042-1 T2.5A/250V
mode] RY-303/505/707
4-0043-1 T2.5A/250V

model RY-307/707
NOTE: 120V model only
Asian model only

SPECIFICATIONS

Amplifier Section
Power Output:
Front: 70W x 2 at 8 ohm train 40 Hz to 15 kHz

with no more than 0.9% THD

(model: RY-707)
50W x 2 at 3 ohm Irom 40 Hz to 15 kHz
with no more than 0.9% THD

(models: RY-SOII, 307, 505, 507)

30W (3.0% THD.1 kHz, 8 ohm)
(model: RYA7O7)

20W (3.0% THD,1 kHz, 8 ohm)
(models: RY-SOS. 507)

Center:

15W x 2 (8.0% THD,1 kHz. 16 ohm)
(model: RY»7D7)

10W x 2 (3.0% THD. 1 kHz, 16 ohm)
(models: RV-SOS. 507)

S/N: 89 dB (IHF-A)

Surround:

PM Section
Tuning Range: 87.9 - 1079 MHz

(USA. and Canadian models)
87.5 -108r0 MHZ

(Asian models)

(Asian models: 50 kHz step U.S.A. and

Canadian models: 200 kHz step)

3. Voltage Selector (Rear Panel)

Asian model are equipped with a voltage selector to
conform to local power supplied.

Be sure to set this switch to match the voltage of the
power supply in your area before plugging in the unit.
Models without a voltage selector can only be used in
area where the power supply is the same as that of the
unit.

VOLTAGE SELECTOR

III] |
L.

230-240V

<_l

220V 220V 230-24C

at AC 230-24OV at AC 220V
Setting the voltage selector
1. Determine the proper for volmge for your area : 230-
240V or 220V.

2. If the preset voltage is not proper for your area, insert
a screwdriver into the groove in the switch. Slide the
switch all the way to the right (230<240V) or to the left
(220V), which-ever is proper.

AM Section
Tuning Range: 520 - 1710 kHz. 10 kHz step
(U.S.A. and Canadian models)
522 - 1620 kHz, 9 kHz step
(Asian models)
General

120V AC, 60 Hz (USA. and Canadian models)
220/230 - 240V AC, 50/60 Hz (Asian models)
Tuner/Amplifier unit

270 x185 x 322 mm

(105/8 x 7-5/16 X12-11/16'In.)

Power Requirement:

Dimensions:
(w x H x D)