Onkyo R 05 Service Manual

Page 1

Ref. Na 3402

ONKYO SERVICE MANUAL

QUARTZ SYNTHESIZED
TUNER AMPLIFIER
MODEL R-05

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UD, UDN. BHUD

120V AC. 60H2

UP, UPV, UPF. BHUP, BHUPV

230V AC. 50Hz

UW, BHUW

120 or 220V AC. 50/60Hz

UQA. BIIUQA

240V AC, 50Hz

SAFETY-RELATED COMPONENT WARNINGE!
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 COMPO
NENTS WITH ONKYO PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS
MANUAL,

MAKE LEAKAGECURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM
THE SUPPLY CIRCUIT BEFORE RETURNING

THE APPLIANCE TO THE CUSTOMER.

ONKYO
Illlllfl BIIMPIINEIIIS

TABLE OF CONTENTS

Specifications ................................................................... 2
Service pmcedurev ,
Exploded view ...............
Parts list ......
Block diagram
120V model .V
Other modelsi ,, ,
M ieroproccssor connection diagram
Terminaldcscriptions....mn V,
IC block diagrams and descriptions
Adjustment procedures .....................
Printed circuit board View from bottom dc .
Schematic diagram
120V model...
()lher mudels
Primed circuit board puns I
Packing view. .......................

Page 11

LM7001 (PLL Synthesizer and Controller)

Phase Detector P01

6
*3 Charge Pump

PDZ

Shift Register - Latch

R-05

3 , z. 5 H Bl
CE CL DATA it 802 we
Pin No. Terminal Description
1 XOUT ,
Connect to the 7.2 MHZ crystal oscxllator.

2 XIN

3 CE Chip enable terminal. Connect to the PLL terminal of microprocessor.

4 I CI. Serial clock input terminal. Connect to the CLOCK terminal of microprocessor.

5 DATA Serial data input terminal. Connect to the DATA terminal of mlcroprocessor.

6 SYN Not used.

7 AUTO/MONO AUTO/MONO selection output terminal. L" whcn AUTO.

8 W FM band control output terminal. L when FM.

9 m AM band control output terminal. L" when AM.

10 AMIN AM local oscillator input temiinal.

ll FMIN FM local oscillator terminal.

12 VDD 1 Power supply terminal for back-up.

l3 VDD 2 Power supply terminal.

14 Pm Charge pump output of the phase detector which constitutes the PLL. High level is output when the
divided local oscillator frequency is high than the reference frequency.

15 PD2 In the opposite case, low level is output. Floating occurs when the frequencies matched.
The output is applied to the variable capacitor diode in the local oscillator through the low pass
filters.

16 Vss Ground terminal

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