Onkyo CRN 1 Service Manual

Page 1

ONIKYO® SERVICE MANUAL

CD RECEIVER
MODEL CR-N1

@-

x
I

@§
©
0

v
x

_ _ . RC-454s
Silver and Tllanlum model
(S)MDD,(S)MDT 120V AC, 60Hz
(T)MPP,(S)MPA 230-240V AC, SUHZ
(S)MGT,(S)MGR,(S)MGQ 220-230V AC, 50/60Hz

SAFETY-RELATED COMPONENT

WARNING

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 ()R RESISTANCE

MEASUREMENTS TO DETERMINE THAT EXPOSED

PARTS ARE ACCEPTABLY INSULATED FROM THE

SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

ONKYO.

IMAGINATIVE SIGHT 8. SOUND

CR-N1

Ref. No. 3687
092001

Page 31

MICROPROCESSOR TERMINAL DESCRIPTION
0701 : MPD78045GF-132-3BQ

CR-N1

PIN N0. FUNCTION I/O DESCRIPTION PIN N0. FUNCTION I/O DESCRIPTION
1 4G 0 Output pin for controlling grid of FL tube. 41 POWERAMP 0 Output pin for controlling power amplifier, H = 0N L = OFF
2 SG 0 4G - 106 42 RDSDATA I Input pin of data frotn RDS demodulator IC.
3 6G 0 43 USB POWER I Input pin of power supply from USB.
4 7G 0 44 SCOR I Input pin of sub code frame detected signal from the signal processing IC.
5 SG 0 45 RDSCLK 1 Input pin of clock form RDS demodulator IC.
6 9G 0 46 SYSIN No use.
7 10G O 47 REMIN I Input pin of control signal from remote sensor.
8 VDD POW SF'Ply pin. (+5V) 48 [C No use.
9 CDCLK 0 Output pm of clock for transmission of command to signal processing IC. 49 USB MIX 0 Output pin for controlling USB indicated-[=MIX, L=SOURCE
10 XLT 0 Output pm of latch for transm sion of command to signal processing 1C. 50 TUMUT 0 Output pin for controlling muting circuit of tuner output.
11 CDDATA 0 Output pm of data for transmission of command to signal processing lC. 51 ANGMUT 0 Output pin for controlling muting circuit of amplifier input signal.
12 SENSZO I Input pin of the SENS signal from CD servo IC. 52 VDDZ Power supply pin. (+5V)
13 DSPMUT 0 Output pin of muting signal for CD output. 53 POWERCD 0 Output pin for controlling power suPply of CD circuit.
14 SQCK 0 Output pin of clock for CD sub code reading to signal processing IC. 54 LED] 0 Output pin for controlling ENERGY SAVE indicator
15 SENS 1 Input pin of SENS signal from signal proc g IC. 55 XRST 0 Output pin of reset signal for signal processing IC.
16 $030 1 Input pin of CD sub code from signal processing IC. 56 CD AUTOADJ I Input pin for initial setting of CD adjustment state.
17 RESET I Input pin for system reset. 57 OPEN 0 Output pin for controlling of CD door.
18 STEREO 1 Input pin of the detection signal of FM stereo. 58 CLOSE 0
19 SD I Input pin of the detection signal of signal strength. 59 LED2 0 Output pin for controlling ACOUSTIC PRESENCE indicator.
20 AVSS Gmund pin of A/D converter. 60 Pl 0 Output pin for controlling segment of FL tube.
21 MAIN POWER 0 Output pin for controlling main power Suppl) H = ON. L = OFF 61 P2 0 P1 P11
22 NU O No use. 62 P3 0
23 NU O No use. 63 P4 0
24 AREA I Input pin for initial setting of the destination 64 P5 0
25 IN/OUT I Input pin for detecting opening-and-closing state of CD door. 65 P6 0
26 SIGNAL 1 Input pin of signal level for automatic memory. 66 P7 0
27 K1 I Input pin of key operation state. 67 P8 0
28 K0 1 Input pin of key operation state. 68 P9 0
29 AVDD Power supply pin. (+5V) 69 P10 0
30 AVREF Reference voltage input pin for A/D converter (+5V). 70 P11 0
31 POFF I Input pin for detection of power failure state. 71 V DISP 0 Power supply pin for FL tube.
32 XT2 O No use. 72 P12 0 Output pin for controlling segment of FL tube.
33 V35 Ground pin. 73 P13 0 p12 . p17
34 X1 Input pin for osc ation circuits of system clock. 74 P14 0
35 X2 Output pin for oscillation circuits of system clock. 75 P15 0
36 RCLK 0 Output pin of clock for controlling function switch IC. 76 P16 0
37 RDATA 0 Output pin of data for controlling function switch IC. 77 P17 0
38 FREQCAL 0 Output pin of frequency for clock adjustment. 78 16 0 Output pin for controlling grid of FL tube.
39 FCE 0 Output pin of latch for controlling function switch IC. 79 2G O 16 - 3G
40 PLLCE 0 Output pin of latch for controlling PLL IC. 80 3G 0

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