CLARION PN-2547N-D - Service Manual Immediate Download

NISSAN Automobile Genuine

AM/FM Radio, 6 CD changer,

Cassette Stereo

Model

-1-

(Genuine No.28188 CL010)

Service Manual

Published by Service Dept.

298-6181-00 Nov.2004X

Printed in P.R.C.

Clarion Co., Ltd.

50 Kamitoda , Toda-shi, Saitama 335-8511 Japan

Service Dept.: 5-66 Azuma, Kitamoto-shi, Saitama 364-0007 Japan

Tel: +81-48-541-2335/2432

FAX: +81-48-541-2703

PN-2547N-D

SPECIFICATIONS

Tuner section

Tuning system:

PLL synthesizer

Receive frequency:

530 kHz to 1710 kHz

87.75 MHz to 107.9 MHz

Intermediate frequency:

450 kHz

10.7 MHz

Quieting sensitivity:

Less than 38 dBu

Less than 15 dBu

Separation:

22+5/-7 dB (1 kHz)

S/N ratio:

More than 45 dB

More than 50 dB

Auto stop sensitivity(DX):

42+6/-6 dBu

(600 kHz)

39+6/-6 dBu

(1000 kHz, 1400 kHz)

32+6/-6 dBu

Cassette tape player section

Reproduction system:

4 track, 2 channel, stereo

auto reverse system

FF/REW time:

Less than 110 sec. (C-60)

Wow & flutter:

Less than 0.15% (W.R.M.S)

Separation:

More than 35 dB

Crosstalk:

More than 45 dB

S/N ratio:

Normal (120 us)

More than 55 dB (DOLBY B NR on)

More than 45 dB (DOLBY B NR off)

Metal (70 us)

More than 57 dB (DOLBY B NR on)

More than 47 dB (DOLBY B NR off)

FF/REW time:

110 sec. (C-60)

CD changer section

Separation:

More than 52 dB (20 kHz LPF)

S/N ratio:

More than 74 dB

Distortion:

Less than 0.4% (20 kHz LPF)

AUX(CD) section

Separation:

More than 52 dB (1 kHz, 3.0V input)

S/N ratio:

More than 74 dB (1 kHz, 3.0V input)

CMRR:

More than 40 dB (1 kHz, 3.0V input)

General section

Load impedance:

4 ohm/4 ch

Power output:

40 W x 4

Power supply voltage: DC 13.2 V

Back up current:

Less than 0.5 mA (at 13.2 V)

Dimensions(mm):

180 (W) x 106.4 (H) x 159.1 (D)

Weight:

approx. 2.8 kg

NOTE

* We can not supply PWB with component parts in principle.

When a circuit on PWB has failure, please repair it by comp-

onent parts base. Parts which are not mentioned in service

manual are not supplied.

* Dolby noise reduction manufactured under license from Dolby

Laboratories Licensing Corporation.

"Dolby" and the double-D symbol are trademarks of Dolby

Laboratories Licensing Corporation.

* Specifications and design are subject to change without noti-

ce for further improvement.

COMPONENT

PN-2547N-D

Main unit

-----------

To engineers in charge of repair or inspe-

ction of our products.

Before repair or inspection, make sure to follow the in-

structions so that customers and engineers in charge

of repair or inspection can avoid suffering any risk or

injury.

1. Use specified parts.

The system uses parts with special safety features against fi-

re and voltage. Use only parts with equivalent characteristics

when replacing them.

The use of unspecified parts shall be regarded as remodeli-

ng for which we shall not be liable. The onus of product liab-

ility (PL) shall not be our responsibility in cases where an ac-

cident or failure is as a result of unspecified parts being used.

2. Place the parts and wiring back in their original positions aft-

er replacement or rewiring.

For proper circuit construction, use of insulation tubes, bon-

ding, gaps to PWB, etc, is involved. The wiring connection

and routing to the PWB are specially planned using clamps

to keep away from heated and high voltage parts. Ensure

that they are placed back in their original positions after rep-

air or inspection.

If extended damage is caused due to negligence during repair,

the legal responsibility shall be with the repairing company.

3. Check for safety after repair.

Check that the screws, parts and wires are put back securely

in their original position after repair. Ensure for safety reas-

ons there is no possibility of secondary ploblems around the

repaired spots.

If extended damage is caused due to negligence of repair, the

legal responsibility shall be with the repairing company.

4. Caution in removal and making wiring connection to the parts

for the automobile.

Disconnect the battery terminal after turning the ignition key

off. If wrong wiring connections are made with the battery co-

nnected, a short circuit and/or fire may occur. If extensive da-

mage is caused due to negligence of repair, the legal respon-

sibility shall be with the repairing company.

5. Cautions regarding chips.

Do not reuse removed chips even when no abnormality is ob-

served in their appearance. Always replace them with new

ones. (The chip parts include resistors, capacitors, diodes,

transistors, etc). The negative pole of tantalum capacitors is

highly susceptible to heat, so use special care when replacing

them and check the operation afterwards.

6. Cautions in handling flexible PWB

Before working with a soldering iron, make sure that the iron

tip temperature is around 270 C. Take care not to apply the

iron tip repeatedly (more than three times) to the same patt-

erns. Also take care not to apply the tip with force.

7. Turn the unit OFF during disassembly and parts replacement.

Recheck all work before you apply power to the unit.

8. Cautions in checking that the optical pickup lights up.

The laser is focused on the disc reflection surface through the

lens of the optical pickup. When checking that the laser opti-

cal diode lights up, keep your eyes more than 30cms away fr-

om the lens. Prolonged viewing of the laser within 30cms m-

ay damage your eyesight.

9. Cautions in handling the optical pickup

The laser diode of the optical pickup can be damaged by ele-

ctrostatic charge caused by your clothes and body. Make su-

re to avoid electrostatic charges on your clothes or body, or

discharge static electricity before handling the optical pickup.

9-1. Laser diode

The laser diode terminals are shorted for transportation in

order to prevent electrostatic damage. After replacement,

open the shorted circuit. When removing the pickup from the

mechanism, short the terminals by soldering them to prevent

this damage.

9-2. Actuator

The actuator has a powerful magnetic circuit. If a magnet-

ic material is put close to it. Its characteristics will change.

Ensure that no foreign substances enter through the ventil-

ation slots in the cover.

9-3. Cleaning the lens

Dust on the optical lens affects performance. To clean the

lens, apply a small amount of isopropyl alcohol to lens pa-

per and wipe the lens gently.

CAUTIONS

Use of controls, adjustment, 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 properly qualified service personnel.

-2-

Top view of

the model unit

S E R I A L

N O .

M A N U F A C T U R E D

A M : 5 3 0 k H z - 1 7 1 0 k H z

I SO

( F L AT MACHI NE SCREW)

M 5

P A R T

N o .

F M : 8 7 . 7 5 M H z - 1 0 7 . 9 M H z

F R E Q U E N C Y

R A N G E

D O L B Y

N O I S E

R E D U C T I O N

S Y S T E M

M A N U F A C T U R E D

U N D E R

L I C E N S E

F R O M

D O L B Y

L A B O R A T O R I E S .

L I C E N S I N G

C O R P O R A T I O N .

D O L B Y

A N D

T H E

D O U B L E - D

S Y M B O L

A R E

T R A D E M A R K S

O F

D O L B Y

L A B O R A T R I E S . L I C E N S I N G

C O R P O R A T I O N .

T H I S

D E V I C E

C O M P L I E S

WI T H

P A R T

1 5

O F

T H E

F C C

R U L E S .

O P E R A T I O N

I S

S U B J E C T

T O

T H E

F O L L O WI N G

T WO

C O N D I T O I N S : ( 1 )

T H I S

D E V I C E

M A Y

N O T

C A U S E

H A R M F U L

I N T E R F E R E N C E , A N D ( 2 )

T H I S D E V I C E

M U S T

A C C E P T

A N Y

I N T E R F E R E N C E

R E C E I V E D , I N C L U D I N G

I N T E R F E R E N C E

T H A T

M A Y

C A U S E

U N D E S I R E D

O P E R A T I O N .

T H I S

P R O D U C T I O N

C OMP L I E S

WI T H

D H H S

R U L E S

2 1

C F R

S U B C H A P T E R

A P P L I C A B L E

A T

D A T E

O F

MA N U F A C T U R E .

M O U N T

S C R E W

8 m m

M A X

M O D E L

N O .

1 2 V ( - ) G R O U N D

P/N

D o n g g u a n

C l a r i o n

O r i e n t

E l e c t r o n i c s

C o . , L t d .

J u n d a I n d u s t r i a l

Z o n e , Do n g Ke n g I n d u s t r i a l

Ro a d , Do n g Ke n g

T o wn Do n g g u a n , Gu a n g d o n g Pr o v i n c e 5 1 1 7 3 4 , T h e Pe o p l e ' s

Re p u b l i c o f

Ch i n a

* In case that the main unit is transported for repair, the lock

pin (966-0653-21) must be set to fix the mechanism assy.

LOCK PIN

966-0653-21

EXPLANATION OF IC

052-3177-12

M30624MGA-598GP

System Controller

1.Terminal Description

pin 1

: 1CD/6CD

: IN : The initial setting terminal. High = 1CD,

Low = 6CD.

pin 2

: TAPE SEL

: IN : The initial setting terminal. High = without tape.

pin 3

: SCV SEL

: IN : The initial setting terminal. Low = without SCV.

pin 4

: NU

: - : Not in use.

pin 5

: ES RETURN

: IN : The flexible PWB connection OK flag input.

pin 6

: BYTE

: IN : The data length selection(8bit/16bit).

pin 7

: CN VSS

: IN : Connect to VSS.

pin 8

: TEST

: - : For the Test.

pin 9

: ILL ON

: - : Not in use. (Low = ILL ON)

pin 10 : RESET

: IN : Reset signal input.

pin 11 : X OUT

: O : Crystal connection.

pin 12 : VSS

: - : Ground.

pin 13 : X IN

: IN : Crystal connection.

pin 14 : VDD

: - : Positive supply voltage.

PN-2547N-D

-3-

052-5047-24

M30621MCM-4U9GP

6 CD Auto Changer Controller

1.Terminal Description

pin 15 : NU

: - : Not in use.

pin 16 : BU DET

: IN : Backup detection signal input.

pin 17 : ACC IN

: IN : ACC ON flag input.

pin 18 : TEL

: IN : The telephone interrupt pulse input.

pin 19 : SBSY

: IN : Not in use.

pin 20 : AMP ON

: O : Audio power amplifier ON signal output.

pin 21 : SYS ON

: O : System ON signal output.

pin 22 : NU

: - : Not in use.

pin 23 : REAR MUTE

: O : The audio mute signal output for the rear

channels.

pin 24 : BEEP

: - : Not in use.

pin 25 : FRONT MUTE : O : The audio mute signal output for the front

channels.

pin 26 : 6-CD REQ

: IN : The request signal input from the 6CD-Changer.

pin 27 : 6-CD RX

: IN : The serial data input for 6CD-Changer.

pin 28 : 6-CD TX

: O : The serial data output for 6CD-Changer.

pin 29 : NDS FLASH TX : O : NDS serial data output for external A/C.

pin 30 : NDS FLASH RX : O : NDS serial data input for external A/C.

pin 31 : FLASH CLK

: O : Clock pulse output for flash memory.

pin 32 : NU

: - : Not in use.

pin 33 : DCU TX

: O : The serial data output to DCU.

pin 34 : DCU RX

: IN : The serial data input from DCU.

pin 35 : NDS CNT

: O : Low = A/C 1, High = A/C 2.

pin 36 : NDS REQ 2

: IN : NDS request signal input.

pin 37 : NDS REQ 1

: IN : NDS request signal input.

pin 38 : SOURCE CHG : O : The signal source change signal output.

pin 39 : FLASH EPM

: O : FLASH EPM.

pin 40 : VOL EEP-R DO : O : Serial data output for Volume IC or EEP-ROM.

pin 41 : VOL EEP-R CL : O : Clock pulse output for Volume IC or EEP-ROM.

pin 42 : VOL CE

: O : The chip enable signal output to the volume IC.

pin 43 : EEPROM CE

: O : The chip enable signal output to EEP-ROM.

pin 44 : FLASH CE

: IN : Chip enable signal input for flash memory.

pin 45 : EEPROM DI

: IN : Serial data input from the EEP-ROM.

pin 46 : NU

: - : Not in use.

pin 47 : AUX ON

: IN : AUX ON signal input.

pin 48 : COMBI ON

: O : Combi ON signal output.

pin 49 : BUC 0

: I/O : CD IC Data input / output.

pin 50 : BUC 1

: I/O : CD IC Data input / output.

pin 51 : BUC 2

: I/O : CD IC Data input / output.

pin 52 : BUC 3

: I/O : CD IC Data input / output.

pin 53 : BUC CLOCK

: O : CD IC clock pulse output.

pin 54 : CCE

: O : The chip enable signal output.

pin 55 : CD RESET

: O : The reset pulse output to the CD IC.

pin 56 : S STOP

: IN : Inside limit signal input from the CD mecha-

nism.

pin 57 : CHU SW

: IN : CD disc chucking signal input.

pin 58 : TR A

: IN : Photo sensor signal input from the CD mech-

anism.

pin 59 : TR B

: IN : Photo sensor signal input from the CD mech-

anism.

pin 60 : VDD

: - : Positive supply voltage.

pin 61 : LD CONT

: I/O : Loading motor control signal output.

pin 62 : VSS

: - : Ground.

pin 63 : PLL CE

: O : The chip enable signal output to the PLL IC.

pin 64 : PLL CLK

: O : The clock pulse output to the PLL IC.

pin 65 : PLL DO

: O : Serial data output to the PLL IC.

pin 66 : PLL DI

: IN : Serial data input from the PLL IC.

pin 67 : ST/TWEET

: I/O : Outputs "L" at AM 900kHz receiving. Inputs

L at FM stereo receiving.

pin 68 : NU

: - : Not in use.

pin 69 : MECH MUTE

: O : Muting signal output to the Tape mechanism.

pin 70 : RDS DATA

: IN : RDS data input.

pin 71 : RDS CLK

: IN : RDS clock pulse input.

pin 72 : SP PULS

: - : Not in use.

pin 73 : TAPE IN

: IN : The tape in signal input.

pin 74 : MODE BIT 1

: IN : The mode bit input from the tape mechanism.

pin 75 : MODE BIT 2

: IN : The mode bit input from the tape mechanism.

pin 76 : MODE BIT 3

: IN : The mode bit input from the tape mechanism.

pin 77 : REEL PULSE

: IN : Reel pulse input from the tape mechanism.

pin 78 : APC SENSE

: O : APC gain control signal output.

pin 79 : APC DET I

: IN : APC detected signal input.

pin 80 : PWR MTR 1

: O : Power motor control signal output.

pin 81 : PWR MTR 2

: O : Power motor control signal output.

pin 82 : MAIN MTR

: O : Main motor control signal output.

pin 83 : NR

: O : Noise reduction control.

pin 84 : FWD/REV

: O : Forward/Reverse selection.

pin 85 : NU

: - : Not in use.

pin 86 : CD CONNECT : IN : CD connection check signal input.

pin 87 : 6-CD LOAD

: IN : The loading control signal input for 6CD-

Changer.

pin 88 : TAPE EJECT

: IN : Tape eject signal input.

pin 89 : 6-CD EJECT

: IN : The eject signal input for 6CD-Changer.

pin 90 : NAVI MUTE

: O : Muting signal output to suppress the noise

without Navigation sound interrupting.

pin 91 : NU

: - : Not in use.

pin 92 : NU

: - : Not in use.

pin 93 : NU

: - : Not in use.

pin 94 : A VSS

: - : Analog ground.

pin 95 : NU

: - : Not in use.

pin 96 : Vref

: - : Reference voltage.

pin 97 : A VDD

: - : Positive supply voltage for the internal analog

section. Low = with RDS

pin 98 : RDS SEL

: IN : The initial setting terminal.

High = without RDS.

pin 99 : EXP/USA

: O : High = USA, Low = EXP

pin 100 : BOSE AMP SEL : IN : The initial setting terminal.

High = BOSE amplifier.

pin 1

: SQ CK

: O : The clock pulse output to read SUB Q Data

from the CD IC.

pin 2

: NU

: - : Not in use.

pin 3

: NU

: - : Not in use.

pin 4

: NU

: - : Not in use.

pin 5

: NU

: - : Not in use.

pin 6

: CN VSS

: IN : Inputting "L" at single mode operation.

pin 7

: MLD_

: O : The load command output to the CD IC.

pin 8

: NU

: - : Not in use.

pin 9

: RESET_

: IN : Reset signal input.

pin 10 : X OUT

: O : Crystal connection.

pin 11 : VSS

: - : Negative supply voltage.

pin 12 : X IN

: IN : Crystal connection.

pin 13 : VDD

: - : Positive supply voltage.

pin 14 : NMI

: IN : Not in use.

pin 15 : BLK CK

: IN : Block clock pulse input.

pin 16 : ACC DET

: IN : ACC detection signal input.

pin 17 : NU

: - : Not in use.

pin 18 : NU

: - : Not in use.

pin 19 : NU

: - : Not in use.

pin 20 : T CLR_

: O : The clear signal output for the test mode

indication.

pin 21 : REQ

: O : Request signal output.

pin 22 : NU

: - : Not in use.

pin 23 : NU

: - : Not in use.

pin 24 : TX_

: O : Ce-NET TX_.

pin 25 : RX_

: IN : Ce-NET RX_.

pin 26 : SW 9V

: O : The power supply control for the disk sensors.

pin 27 : P ON 1

: O : Power ON signal output.

pin 28 : M DATA

: O : The command data output to the CD IC.

pin 29 : STAT

: IN : The status data input from the CD IC.

pin 30 : M CLK

: O : The clock puse output to the CD IC.

pin 31 : P ON 2

: O : Power ON signal output.

pin 32 : LIMIT

: IN : Limiting switch signal input.

pin 33 : SW 1

: IN : The datum point signal input for the Mode

Plate.

pin 34 : SW 2

: IN : The datum point signal input for the V Motor.

pin 35 : PT 2

: IN : The positioning pulse input for the V Motor.

pin 36 : PT 5

: IN : The disk sensor.

pin 37 : PT 4

: IN : The disk sensor.

pin 38 : PT 3

: IN : The disk sensor.

pin 39 : PT 1

: IN : The positioning pulse input for the Mode Plate.

pin 40 : PT 6

: IN : The disk sensor.

pin 41 : M 2 CCW

: O : The control signal output for the V Motor.

pin 42 : NU

: - : Not in use.

pin 43 : M 2 CW

: O : The control signal output for the V Motor.

pin 44 : M 1 CCW

: O : The control signal output for the Mode Motor.

pin 45 : M 1 CW

: O : The control signal output for the Mode Motor.

pin 46 : M 3 CCW

: O : The control signal output for the Roller Motor.

pin 47 : M 3 CW

: O : The control signal output for the Roller Motor.

pin 48 : N RESET_

: 0 : The reset signal output to the CD IC.

pin 49 : NU

: - : Not in use.

pin 50 : HS SW1

: IN : Normal speed = "H", x2 speed = "L".

PN-2547N-D

-4-

D-RAM

SERVO

DRIVER

BL101

AM/FM

TUNER

LPF

IC104

LC72191

PLL

TAPE MECHANISM

PRE-AMP

DOLBY-B

APS

IC401

TA7291F

MOTOR

DRIVER

CD CHANGER MECHANISM

RF AMP

DSP/SSP/DAC/

SPMC

CPU

IC403

NJM4558

NAVI AMP

IC302

LC75412WH

ELECTRONIC

VOLUME

MUTE

IC405

S-80933

RESET

IC404

M30624MGA

SYSTEM CONTROL

POWER

SUPPLY

PANEL SW

A/C

INTERFACE

V06

V05

V27

V28

V09

V15

V21

V25

V22

V26

V30

V31

V23

IC102

RDS

SAA6581

IC808

TA8275

POWER AMP

IC101

LA1061M

DIVER-IC

880-1921U

MAIN SUB

AUD-DCU

INTERFACE

V07

V08

V16

IC201

NJM4565V

AUX AMP

AUX / COMBI-ON

INTERFACE

IC801-804

,806

NJM2060

BLOCK DIAGRAM

Main section

AUX-ON

L-CH INPUT (+)

L-CH INPUT (-)

COMBI-ON

R-CH INPUT (-)

R-CH INPUT (+)

GND

J202

J601 NS06 MW

REAR RIGHT (+)

REAR LEFT (-)

REAR LEFT (+)

REAR RIGHT (-)

J601 NS10 MW

FRONT LEFT (+)

FRONT RIGHT (+)

ACC

FRONT LEFT (-)

FRONT RIGHT (-)

ANT

B/U

GND

J1001

A-16 MW

REMOTE-CONTROL

J1002 A-12MW

NDS-AUTO CHANGER

V21

CD-LCH INPUT (+)

V22

CD-RCH INPUT (+)

V23

TXD(COMBI to CD)

V24

V25

CD-LCH INPUT (-)

V26

CD-RCH INPUT (-)

V27

GND

V28

GND

V29

V30

REQ(CD to COMBI)

V31

RXD(CD to COMBI)

V32

V01

V02

V03

V04

V05

NAVI INPUT (-)

V06

NAVI INPUT (+)

V07

TX(AUD-DCU)

V08

RX(DCU-AUD)

V09

DATA GND

V10

V11

V12

V13

V14

V15

GND

V16

GND

pin 51 : T CLK

: O : "Test mode display" clock output.

pin 52 : TEST 4

: IN : For the test.

pin 53 : TEST 3

: IN : For the test.

pin 54 : TEST 2

: IN : For the test.

pin 55 : TEST 1

: IN : For the test.

pin 56 : EEP DI

: IN : The serial data input from EEP ROM.

pin 57 : EEP DO

: O : The serial data output to EEP ROM.

pin 58 : EEP CLK

: O : The clock pulse output to EEP ROM.

pin 59 : EEP CE

: O : The chip enable signal output to the EEP ROM.

pin 60 : NU

: - : Not in use.

pin 61 : NU

: - : Not in use.

pin 62 : SHUT

: IN : Shutter switch input.

pin 63 : NU

: - : Not in use.

pin 64 : NU

: - : Not in use.

pin 65 : NU

: - : Not in use.

pin 66 : NU

: - : Not in use.

pin 67 : NU

: - : Not in use.

pin 68 : NU

: - : Not in use.

pin 69 : NU

: - : Not in use.

pin 70 : NU

: - : Not in use.

pin 71 : NU

: - : Not in use.

pin 72 : NU

: - : Not in use.

pin 73 : NU

: - : Not in use.

pin 74 : T DATA

: O : The serial data output for the test mode

indication.

pin 75 : A VSS

: - : Analog ground.

pin 76 : NU

: - : Not in use.

pin 77 : Vref

: - : Reference voltage

pin 78 : A VCC

: - : Positive supply voltage for the internal analog

section.

pin 79 : SUB Q

: IN : Sub Q data input from the CD IC.

pin 80 : NU

: - : Not in use.

PN-2547N-D

-5-

CD PWB(B3)

DRIVE PWB(B6)

DRIVE UNIT ASSY

HBS-531-100

SENSOR PWB(B4)

LED-L-PWB(B8)

LED-R-PWB(B9)

SIDE PWB(B2)

NJM4556

IC504

L-OUT

R-OUT

EEPROM

BR93LC46

IC501

MICOM

M30621

IC502

VDDREF

Q102

RESET

S-80827AN

IC503

B/U DET

Q503,Q504

ACC-DET

Q502

B/U DET

SYS-ACC

VDD

P-ON1

VDD

Q103

SENSOR 9V

Q505,506

CD 5V

Q104,105,106

CD-9V

AUDIO L

AUDIO R

D-OUT

33MHz

D-RAM

MSMS1V7400F

IC2

DSP

SSP

DAC

SPMC

MN662785

IC1

RF-AMP

AN8882

IC4

SERVO

DRIVER

BD7961FM

IC3

MOTOR

DRIVER

3.3V

REG

PICK-UP

KSS661B

SPINDLE MOTOR

SLED MOTOR

LIMIT SW

CD3.3V

MOTOR DRIVER

BA6920FP

IC1

V-INT SW

V-SENSOR

IC6

MOTOR

MODE

MOTOR

V MOTOR

MODE-INT SW

MODE SENSOR

PT1

DISC SENSOR

PT3,4,5,6

LED

LED3,4,5,6

J102

P-ON2

CD CHANGER MECHANISM

CD changer module section

ADJUSTMENT

FM noise

convergence

1. Input the 98.1MHz/55dBu(1kHz,30% MOD) signal. (Volume max.=0dB)

2. Adjust the outputs to -22+1/-1dB by VR102 when the SG output is set -20dBu.

SSG

Milli-volt meter

Item

Procedure

Measuring

instrument

Diversity

1. Use the diver ANT, the signal is 98.1MHz(1kHz, 30%MOD), when connect the ANT at

the side of MAIN.

2. Input the 25dB signal, PIV-TP is 0V.

3. Adjust VR101 so that the TP101 is more than 2V, when the SG(signal) input is 25dB.

SSG

Digital tester

Dolby level

1. Insert a Dolby level test tape(400Hz,200nWb/m). (Dolby SW:off)

2. Adjust VR1(L)/VR2(R) so that an output of TP-L(L)/TP-R(R) is 300mV+1/-1dB.

Dolby level tape

Milli-volt meter

Tape speed

1. Playback a Wow & flutter test tape(3kHz,-10VU) and connect the frequency

counter to TP-L(L)/TP-R(L).

2. Adjust speed VR of the motor to obtain an output of TP-L(L)/TP-R(R) is 2970Hz

to 3090Hz.

Wow & flutter tape

Frequency counter

PN-2547N-D