Onkyo DXF 771 Service Manual

Page 1

DX-F71

Heir No 3489

ONKYO® SERVICE MANUAL

PORTABLE CD PLAYER
MODEL DX-F771

UD 120V AC, 601-12

UP 230V AC, SOHZ

SAFETY-RELATED COMPONENT WARNING I!
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 PARTS NUMBERS APPEAR AS SHOWN IN
THIS MANUAL.

MAKE LEAKAGE~CURRENT OR RESISTANCE MEA»
SUREMENTS TO DETERMINE THAT EXPOSED PARTS
ARE ACCEPTABLY INSULATED FROM THE SUPPLY
CIRCUIT BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.

l ONKYO
AIIIIIII IIIIMPIIIIIIIIS

SPECIFICATIONS

Signal readout system: Optical nonvcontact
Error correction system: Cross Interleave Reed Solomon code
I BIT D/A converter

352.8 kHz

(Eight-times oversampling)

D/A converter:
Sampling frequency:

Number of channels: 2 (stereo)

Frequency response: 20 Hz - 20 kHz

Wow and Flutter: Below threshold of measurability
Output level: lSmW X 2 (headphone)

Power supply rating; AC 120 V, 60Hz (UD type)
AC 230V, 50Hz (UP type)
3V: Using two AA batteries
3V: Using the rechargeable battery
Dimensions (W x H x D): 129 X 32 x163 mm

5-1/8"><1-1/4">< 6-7116"
Weight: 0.3 kg, 1L4 oz (main unit only)
Specifications and external appearance are subject to change with
out notice because of product improvements.

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DX-F71

SAFETY CERTIFICATION

This Compact Disc Player is made and tested to meet exacting safety standards. it meets UL and FCC requirements and complies
with safety performance standards of the US. Department 01 Health and Human Services.

Luer Diode Properties
Material: Ga-AI-As
Wavelength: 755 - 815 nm (25°C)

Laser Output: Continuous Wave max.0.5 mW

ONKYOQ
PORTABLE CD PLAYER

MODEL No. DX-F71
DC 3V EXTERNAL DC SUPPLY
BATTERY SUPPLY 15sz
AA' SIZE R6 OFI EQUIVALENT

om CORPORATION MADE lN CHINA
SN 2913 756

COMPLIES WITH FDA RADIATION
PERFORMANCE STANDARDS,
21 CFR SUBCHAPTER J.

MANUFACTURED: SSHQ

( amend. )

MADE IN CHINA

CAUTION - USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED
HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE

THE COMPACT DISC PLAYER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT QUALIFIED SERVICE PERSON-

NEL.

LASER BEAM RADIATION SPOT

Laser Beam Radiation

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IC PIN FUNCTIONS (Contlnued)

MN SYMBOL NO FUNCflON
44 SBSY O Sync signal of the sub code block
45 EFLG 0 Used for the correction monitor of C1, 02, 1 multiplex, and 2 multiplex.
46 PW O SFSY is the sync signal of the sub code frame. The sub codes of P, O, R. S, T,
47 SFSY 0 U , V. W are read by sending the clock to SBCK 8 times.
48 SBCK |
49 FSX 0 7.35 kHz sync signal output.
50 WHO 0
WHO becomes H" when the data of sub code 0 has passed the CRC check.
5 WC ' This is taken externally and by sending COCK, the data is read from soour.
52 SOOUT 0 When the data is desired with the LSB first, M/L is dropped to "L.
53 COIN I After RWC is set to H" by the microprocessor, it is synchronized with the
_ COCK command data and sent to give the command
54 CQCK |
56 MIL l
55 RES I This is set once to L" when the power is switched on.
57 LASER 0 This output pin can be controlled by serlal control trom
50 CONT O the microprocessor.
56 16M 0 16.9844 MHz output pin.
59 4.2M 0 4.2336 MHz output pin.
61 TESTS l LSl test pin; normally not connected.
62 2% l Chip select pin. The LC78681 becomes active when this pin is ".L
63 XIN l
63 XOUT 0 Connection plns of the 16.9344 MHz crystal oscHlator.

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