Clarion PU-9836A service manual Adjustment

• ADJUSTMENT:

ITEM

TEST-POINT

PROCEDURE

I.CONNECT THE DIGITAL VOLT-METER TO TP3 AND TP4.

OV

IFI60I

2. INPUT THE 98.IMHz/30dB SIGNAL(no MOD),AND ADJUST THE READING OF

DIGITAL VOLT-METER TO 0±201lV BY IFI60!.

I. INPUT THE 98.IMHz/65dB SIGNAL(400Hz,30% MOD). [OUTPUT:OdB(0.245V)]

Limiter

VR602

2.SET THE SSG OUTPUT TO 10dB,AND ADJUST THE OUTPUT LEVEL TO -3dB

BY VR602.

I.CONNECT BETWEEN TP9 AND TPIO(5V).

SO

VR60I

2. INPUT THE 98.IMHz/23dB SIGNAL(400Hz,309Vo MOD).

3.ADJUST VR601 SO THAT THE VOLTAGE OF TP5 IS IN THE RANGE OV TO 5V.

I.CONNECT THE DIGITAL VOLT-METER TO TP6.

S-meter

VRI02

2. INPUT THE 98.IMHz/35dB SIGNAL(400Hz no MOD).

3. ADJUST THE LEVEL TO 2.4 ± 0.1 V BY

VRI02.

1. INPUT THE 98.IMHz/65dB SIGNAL(7KHz 30% MOD).

SASC

VR603

2.SET THE OUTPUT TO OdB BY VR603 FULLY

COUNTER-CLOCKWISE. (0. 775V)

3.SET THE SSG OUTPUT TO 43dB,AND ADJUST VR603 SO THAT THE OUTPUT

LEVEL IS -2dB.

Separation

VR604

1. INPUT THE 98. IMHz,CONNECT THE OUTPUT OF ASTEREO MODULATOR TO

THE EXTERNAL MODULATION TERMINAL, AND INPUT

A65dB SIGNAL.

2.SET THE STEREO MODULATOR TO THE L OR R-ch AND ADJUST VR604 SO

THAT THE MAXIMUM SEPARATION IS OBTAINED. (MORE THAN 20dB)

CW

VR50I

I.CONNECT THE MILLI VOLT-METER TO TP8.

2. INPUT THE 98.IMHz/65dB SIGNAL(IOOHz,MONO) AND ADJUST THE LEVEL

TO 1. 77V± IdB BY VR501.

I. INPUT tTHE 98.IMHz/55dB SIGNAL (no MOD,SK DK on)

DK

VR502

2.CONNECT THE OSCILLOSCOPE TO TP9,AND ADJUST VR502 SO THAT

THE OSCILLOSCOPE OUTPUT WAVEFORM IS MAXIMUM.

Tape

speed

TRIOI

1. INSERT A TAPE SPEED TEST TAPE (3000Hz).

2.ADJUST THE TAPE SPEED TO 3000±45Hz BY TRIO!.

VR40I

1. INSERT A DOLBY LEVEL TEST TAPE (400Hz-200nWb/.),CONNECT THE

Dolby

NR

VR402

MILLI VOLT-METER TO TPI(L) AND TP2(R).

2. ADJUST VR401(L) AND VR402(R) TO OBTAI N AN OUTPUT OF 388mV ± 1dB.

ADJUSTMENT POINT/TEST POINT

TOP VIEW

BOTTOM

VIEW

TP5

VR 601

r --VR 603

TP3 -

- TP4

1FT 601 ------ ,

~VR602

VR 604 ----- ,

VR 102

C!)

T~P6

(:~~.

TPII

TPI2

••••

TP7

~ C!)TP9

TPIO

TP'4 TPB

TP2

MAIN PWB MAIN PWB

*DIVER FIX(HAIN) :Connect TP12 to earth.

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I PU-9836A]