Kenwood HM-901, R-SE9 Service Manual

PRECAUTIONS FOR REPAIR

• For the SERIAL TEST CODE LIST of the circuit description, see Service manual (B51-5210-00) of R-SA7.

• For the INITIAL STATE, the BACK UP and the MICROPROCESSOR of the circuit description, see Service manual (B515373-00) of R-SE7.

• No connection of ground line if disassemble the unit.

• Please connection the ground line on rear panel, PCBs, Chassis and some others.

STEREO INTEGRATED AMPLIFIER/TUNER

R-SE9

SERVICE MANUAL

band

volume control

auto/mono enter

phones

mode

pure

multi control

N.B.

∞ ∞

down up

stereo integrated amplifier/tuner R-SE9

TRAITR

on/standby

SYSTEM

CONTROL

ANTENNA

GND

FM75

IN IN

REC PLAY

SUPER WOOFER PRE OUT

SPEAKERS

( 6 - 16 )

TAPE

REC PLAY

AUX

Side plate (A50-1303-02)

Panel* (A60-)

Front glass (B10-2369-03)

AC power cord * (E30-)

Screw terminal board (E70-0061-05)

Lock terminal board (E20-0476-05)

Phono jack (E63-1014-05)

Phono jack (E63-0046-15)

Phono jack (E63-0047-15)

Rectangular receptacle (E08-0312-05)

Metallic cabinet (A01-3463-11)

Power cord bushing (J42-0083-05)

Knob (K29-6741-04)

Knob (K29-6738-04)

Knob (K29-6739-04)

Knob (K29-6751-04)

(HM-901)

* Refer to parts list on page 21.

FM indoor antenna (1) (T90-0182-15) : M (T90-0806-05) : T

DISPLAY

SLEEPTAPE

REMOTE CONTROL UNIT

RC-SE9

1 2 3 RANDOM

4 5 6 CLEAR

7 8 9 P.MODE

O.T.E. 0 +10 EDIT

TUNER

BAND

INPUT N.B. MUTE

VOLUME

CONTROL

CDP.CALL

Batteries (R6/AA) (2)

AM loop antenna stand (1) (J19-3645-05)

AM loop antenna (1) (T90-0820-05)

Audio cords (2) (E30-0615-05)

System control cord (1) (E30-2628-05)

Battery cover (A09-0374-08)

Remote control unit (1)

(A70-1154-05) : M .................RC-SE9

(A70-1155-05) : T ..................RC-SE9(E)

CONTENTS / ACCESSORIES

SCHEMATIC DIAGRAM............................................ 9

EXPLODED VIEW ....................................................20

PARTS LIST..............................................................21

SPECIFICATIONS....................................................27

SYSTEM NAME AMP/TUNER CD PLAYER SPEAKER

HM-901 R-SE9 DP-SE9 LS-SE9

R-SE9

CIRCUIT DESCRIPTION

1. DESTINATION LIST OF TUNER

1-1 Destination List of Tuner

2. TEST MODE

2-1. Initializing

The system is initialized when the power is turned on while pressing the POWER key.

(1) Contents of operation

EAll the functions are initialized.

2-2. AMP test mode using main unit's keys

2-2-1. Entering the AMP test mode

ETurn on the power while pressing the BAND key.

2-2-2. Canceling the AMP test mode

EBy turning off the power, the system is initialized and the

test mode is canceled. 2-2-3. Contents of AMP test mode (1) Automatic POWER ON

EThe POWER ON state is entered whenever the power is

turned on while pressing the BAND key. All functions are

then initialized and activated in the all-lighting mode.

ESub-clock oscillation diagnosis function

The oscillation diagnosis (existence of oscillation and

measurement of period) of a sub-clock is performed

before the test mode is entered. If the diagnosis result is

OK, the system enters the test mode.

If the diagnosis result is NG, the oscillation of the sub-

clock is diagnosed again. If the result is OK, the system

enters the test mode. If the diagnosis result is continu-

ously NG five times, the system stops with ERR 1 and

ERR 2 displayed. (2) All-lighting mode

EAll the fluorescent display indicators and LED lamps light

when the power is turned on while pressing the BAND

key.

E After that, the all-lighting mode is canceled when any

main unit's key is pressed. The normal display obtained when the selector is set to TUNER then appears.

(4) Others

EThe AMP test mode is not terminated even if the selector

is set to positions other than TUNER.

EIn the AMP test mode, the muting during mode selection

is not controlled. However, the operation during the power-on sequence is the same as the normal operation.

EThe SP protection operation is also the same as the nor-

mal operation.

E In the AMP test mode using main unit's keys, the keys

below provide a special operation according to the position where the selector is set. The main unit's keys except described below and the rotary encoder provide the normal operation.

(5) When selector is set to TUNER

Key Operation

PURE A key Increments the P.CALL every time this

key is pressed.

N.B. key Decrement the P.CALL every time this

key is pressed.

ENTER key Selects the display cyclically in the order

below every time this key is pressed.

@ Write data in the unused area of E2PROM, then read the

written data. If the read data is the same as the written data, "RAM OK" is displayed in the fluorescent display indicator. If the former is different from the latter, "RAM NG" is displayed.

A Set the TUNER ATT to OFF and display the S level in

hexadecimal when the ENTER key is pressed. ("ATT OFF **" is displayed in the fluorescent display indicator.)

B Set the TUNER ATT to ON and display the S level in

hexadecimal when the ENTER key is pressed. ("ATT ON

**" is displayed in the fluorescent display indicator.) * The special display using the ENTER key is continued until the next operation is carried out. (**: S LEVEL) When keys other than ENTER are pressed in items @to B above, the TUNER ATT is set to OFF and the normal display appears. The operation corresponding to the key that has been pressed is performed in this case.

Desti-

Receive

Channel

PLL

DIODE SW(X14)

nation

BAND frequency

space

1F reference DSW1 DSW2

range frequency

D26 D29

87.5MHz~

100kHz +10.7MHz 25kHz

108.0MHz

530kHz~

10kHz +450kHz 10kHz

1 1

1700kHz

87.5MHz~

50kHz +10.7MHz 25kHz

108.0MHz

531kHz~

9kHz +450kHz 9kHz

0 1

1602kHz

87.5MHz~

50kHz +10.7MHz 25kHz

108.0MHz

(RDS)

531kHz~

9kHz +450kHz 9kHz

1 0

1602kHz

K2 or E1 is changed the setting "DSW1".

X 1

(DSW1=1 : K2, 0 = E1)

0 : NO DIODE 1 : DIODE X : SWITCHING TRANSISTOR

3) CONSTRAINT IDLING CURRENT CHANGEOVER MODE

when selector is set to positions other than TUNER. [PURE A key] Every time this key is pressed. idling current mode is selected cyclically.

î NORMAL(B class)îPURE A(IDLING MID)îPURE A(IDLING HIGH)ì

PURE A NORMAL (MIDíîHIGH AUTO CHANGEOVER)

IDLING CURRENT MODE DISPLAY

PURE A IDLING MID (constraint) PURE A M PURE A IDLING HIGH (constraint) PURE A H PURE A NORMAL MID (less than VOL.10.00) PURE A ✻ M PURE A NORMAL HIGH (more than VOL.10.01) PURE A ✻ H

CIRCUIT DESCRIPTION

-- -> MUTE operation -> Minimum -> Maximum ->

ƒPre-condition

ƒ In the operation for except the AUTO key, become pre-

condition equlizer .

ƒPre condition : The equlizer becomes the condition to be

pushed the AUTO key before (include N.B. circuit).

Refer to Service manual (B51-5210-00) of R-SA7 on page 7.

ETurn on the power while pressing the TUNING UP key.

EBy turning off the power, the system is initialized and the

test mode is canceled.

EThe POWER ON state is entered whenever the power is

turned on while pressing the TUNING UP key. All the functions are then initialized.

E In the RDS test mode using main unit's keys, the keys

below provides a special operation according to the position where the selector is set. The main unit's keys except described below and the rotary encoder provide the normal operation.

Key Operation

CLASS A key Performs the same operation as for

remote control key "DISPLAY" every time this key is pressed.

remote control key "PTY" every time this key is pressed.

N.B. key Performs the same operation as for

remote control key "TA" every time this key is pressed.

ENTER key Selects the display cyclically in the order

below every time this key is pressed.

@Write data in the unused area of EEPROM, then read the

written data. If the read data is the same as the written data, "RAM OK" is displayed in the fluorescent display indicator. If the former is different from the latter, "RAM NG" is displayed.

A Set the TUNER ATT to OFF and display the S level in

hexadecimal when the ENTER key is pressed. ("ATT OFF **" is displayed in the fluorescent display indicator.)

B Set the TUNER ATT to ON and display the S level in

hexadecimal when the ENTER key is pressed. ("ATT ON **" is displayed in the fluorescent display indicator.)

* The special display using the ENTER key is continued until the next operation is carried out. (**: S LEVEL) When keys other than ENTER are pressed in items @to B above, the TUNER ATT is set to OFF and the normal display appears. The operation corresponding to the key that has been pressed is performed in this case.

2-4. SERIAL TEST MODE

(1) Setting the serial test mode The unit is put into the serial test mode when a serial code

"TEST ON" is input during the POWER-ON sequence. In the 16-bit serial test mode, serial code C27FH is input.

EIn the serial test mode, all remote control keys and ordi-

nary serial codes are disabled. Only the panel keys perform the same operation as usually.

(2) Canceling the serial test mode

EThe serial test mode is canceled to return to the ordinary

mode by inputting a "TEST OFF" code (C27 EH). After the ordinary mode was returned, the serial mode is returned to the state before the test mode is entered.

The backup operation is not initialized.

EThe serial test mode is also canceled when the AC power

is turned OFF.

(3) Cautions

EThe serial test code is prescribed as a 16-bit code only. EThe operations below are inhibited in the serial test mode.

The operations mentioned above cannot be guaranteed when they are performed in the serial test mode.

E An identical code is output when the serial test mode

code is input.

INITIALIZE level ìî MAX î MID î MIN ì

VOLUME

Press the ENTER key.

Press the PURE A key,

then press the ENTER key.

MAX 86 16.00

MID 40 8.00 MIN 1 0.20

INITIALIZE 7 1.40

R-SE9

ADJUSTMENT

NO.

ITEM

INPUT

SETTINGS

OUTPUT

SETTINGS

TUNER

SETTINGS

ALIGNMENT

POINTS

ALIGN FOR

FIG.

DISCRIMINATOR

(A)

98.0kHz

1kHz, ±75kHz dev.

60dBµ(ANT input)

Connect a DC

voltmeter

between

Pin 1 and Pin 2

of CN 2.

MONO

98.0MHz L 31

(a)

L 32

Minimum distortion.

DISTORTION

(STEREO)

(C)

98.0MHZ

1kHz, ±68.25kHz dev.

Pilot: ±6.75kHz dev.

60dBµ(ANT input)

(B)

AUTO

98.0MHz

IFT (A1)

Minimum distortion.

(a)

NO.

ITEM

INPUT

SETTINGS

OUTPUT

SETTINGS

AMP SETTINGS

ALIGNMEN

T POINTS

ALIGN FOR

FIG.

POWER: ON

A CLASS B CLASS

IDLE CURRENT

—

Connect a DC

voltmeter

across

CN9(L)

CN10(R)

(X09, A/4)

PURE A : ON

PURE A : OFF

Volume : 0

VR1(L)

VR2(R)

(X09, A/4)

18mV

(b)

A CLASS

IDLE CURRENT

—

[EXCEPT TUNER]

PURE A : ON

Volume : 0.20~10.00

Less than 90mV.

(Check)

A CLASS

IDLE CURRENT

—

[EXCEPT TUNER]

PURE A : ON

Volume : 10.20~16.00

Less than 250mV.

(Check)

SYSTEM

CONTROL

ANTENNA

GND

FM75

IN IN

REC PLAY

SUPER WOOFER PRE OUT

SPEAKERS

( 6 - 16 )

TAPE

REC PLAY

AUX

Oscilloscope

Distortion meter

AC voltmeter

Dummy antenna

(A)

(B)

(C)

(D)

FM SG

MPX

FM SG

AM SG

(a) (b)

CN9(L) CN10(R)

Dc voltmeter

18mV

FM SECTION

X05-4622-71 (T TYPE)

AUDIO SECTION (X09-470x-xx)

SYSTEM CONNECTIONS

A B DC E

Refer to the schematic diagram for the value of resistors and capacitors.

PC BOARD

(

Component side view

)

TUNER UNIT (X05-4600-72) : M

(X05-4622-71) : T

FHJLNGIKMO

Refer to the schematic diagram for the value of resistors and capacitors.

PC BOARD(Component side view

)

7 8

AUDIO UNIT (X09-4700-21) : M

(X09-4702-71) : T

DISPLAY UNIT (X14-4560-21) : M (X14-4562-71) : T

+ 16 hidden pages

Kenwood HM-901, R-SE9 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual