Onkyo FR-155 Service Manual

CD/MD TUNER AMPLIFIER

MODEL FR-155

FR-155

Ref. No. 3662

092000

Silver model

UDT
UGT

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 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 OR RESISTANCE
MEASUREMENTS TO DETERMINE THA T EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

120V AC, 60Hz
220 -230V AC, 50/60Hz

TABLE OF CONTENTS

Specifications ----------------------------------------------------------­Caution on replacement of optical pickup ---------------------------
Protection of eyes from laser beam during servicing ---------------
Laser W arning Label----------------------------------------------------
Service procedures -----------------------------------------------------
Front panel view --------------------------------------------------------
Connecting to Other Components------------------------------------
Remote controller -------------------------------------------------------
Setting the day of the Week and the Time----------------------------
IC Block diagram and descriptions -----------------------------------
Microprocessor Connection Diagram---------------------------------
Microprocessor Terminal Description--------------------------------
Operation of the Microprocessor--------------------------------------
MD Mechanism Exploded view-------------------------------------
MD Mechanism Disassembly ----------------------------------------
MD Mechanism Reassembly ----------------------------------------
MD Adjustment Procedures ------------------------------------------
MD Mount View / Messages--------------------------------------------
CD Mechanism Exploded View ---------------------------------------
CD Adjustment Procdedure-------------------------------------------
Clock Adjustment Procdedure-----------------------------------------
Handling of Pickup-----------------------------------------------------
Chassis Exploded View Parts List------------------------------------
Chassis Exploded View ------------------------------------------------
Block Diagram----------------------------------------------------------
Block Diagram (Power Supply Section)------------------------------
Schematic Diagram (Amplifire Section)-----------------------------
Printed Circuit Board View 1------------------------------------------
Schematic Diagram (CD&Microprocessor Section)----------------
Printed Circuit Board View 2------------------------------------------
Schematic Diagram (Power Supply Section)-----------------------
Printed Circuit Board View 3------------------------------------------
Printed Circuit Board View Parts List--------------------------------
Wiring V ie w-------------------------------------------------------------
Packing View Parts List------------------------------------------------

2
2
3
3
3
4
5
6
6
7
15
16
17
18~19
20,21
22
23~25
26
27,28
29
30
31
32
33
35
37
39
41
43
45
47
49
51~54
55
57

FR-155

SPECIFICATIONS

General

Power supply AC 220-230 V, 50/60 Hz

AC 120 V, 60 Hz

Power consumption 63 W (220-230 V, 50/60 Hz)

82 W (120 V, 60 Hz)

(Standby) 7 W
(Energy Save) 1.5 W
Clock precision

Dimensions (W × H × D) 205 × 154 × 356 mm
Weight 5.5 kg, 12.1 lbs

Amplifier

Power output

Dynamic power 2 × 23 W at 4 W
Total harmonic distortion 0.4 % at rated power
IM distortion 0.2 % at rated power
Damping factor 25 at 8 Ω
Sensitivity and impedance LINE, TAPE:

Frequency response 10 to 50,000 Hz : +0dB / -3 dB
Tone Control S.BASS1: +4 dB at 40 Hz

Signal to noise ratio

Muting

CD player

Signal readout system Optical non-contact
Frequency response 10 Hz to 20 kHz ( 3 dB)
Wow and flutter Below threshold of

monthly error: 30 seconds
(at 25 degrees Celsius)

8-1/16" × 6-1/16"× 14"

2 × 26 W at 4 W EIAJ
2 × 21 W at 6 W EIAJ
Rated Power
2 × 19 W min, RMS at 4 W

1 kHz no more than

0.2 % THD

150 mV, 50 kW

CDR: 150 mV, 50 kW

S.BASS2: +8 dB at 50 Hz
S.BASS3: +4 dB at 10 kHz/

+8 dB at 50 Hz

LINE, CDR, TAPE: 100dB
(IHF-A)
50 dB

measurability

MD recorder

Signal readout system Optical non-contact
Recording time 320 minutes maximum

(at LP4 mode)

Frequency response 10 Hz to 20 kHz ( 3 dB)
Wow and flutter Below threshold of

measurability

Tuner

Tuning range FM: 87.50 to 108.00 MHz

(50 kHz steps)

AM: 522 to 1611 kHz

(9 kHz steps)

Usable sensitivity FM Mono:11.2 dBf,

1.0 µV (75 W IHF)
Stereo:17.2 dBf,

2.0 µV (75 W IHF)

AM: 30 µV

50 dB quieting sensitivity

Capture ratio 2.0 dB
Image rejection ratio FM: 85 dB

IF rejection ratio FM: 90 dB
Signal to noise ratio FM Mono : 73 dB IHF

Selectivity FM: 50 dB
Harmonic distortion FM: Mono: 0.7 %

Frequency response FM:
Stereo separation FM: 40 dB at 1,000 Hz

Specifications and features are subject to change without noitce.

FM Mono:17.2 dBf,

2.0 µV (75 W)
Stereo:37.2 dBf,

20.0 µV (75 W)

AM: 40 dB
AM: 40 dB

Stereo : 67 dB IHF

AM: 40 dB
( 300 kHz at 40 kHz devi.)

Stereo: 0.3 %

AM: 0.7 %

30 to 15,000 Hz ( 1.5 dB)

FM:

30 dB at 100 to 10,000 Hz

CAUTION ON REPLACEMENT OF OPTICAL PICKUP

The laser diode in the optical pickup block is so sensitive to
static electricity, surge current and etc., that the components
are liable to be broken down or its reliability remarkably
deteriorated.

PRECAUTIONS

1.Ground for the work-desk.
Place a conductive sheet such as a sheet of copper

(with impedance lower than 10 Mohm) on the work­desk and place the set on the conductive sheet so that
the chassis can be grounded.

2.Grounding for the test equipments and tools.

Test equipments and toolings should be grounded in
order that their ground level is the same the ground of
the power source.

During repair,carefully take the following precautions.
(The following precautions are included in the service
parts.)

3. Grounding for the human body.
Be sure to put on a wrist-strap for grounding whose
other end is grounded.
Be particularly careful when the workers wear
synthetic fiber clothes, or air is dry.

4. Select a soldering iron that permits no leakage and

have the tip of the iron well-grounded.

5. Do not check the laser diode terminals with the

probe of a circuit tester or oscilloscope.

2

.

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

FR-155

This set employs a laser. Therefore, be sure to follow carefully
the instructions below when servicing.

WARNING!!

SERVICE WARNING : DO NOT APPROACH THE
LASER EXIT WITH THE EYE TOO CLOSELY.

IN CASE IT IS NECESSARY TO CONFIRM LASER
BEAM EMISSION, BE SURE TO OBSERVE FROM
A DISTANCE OF MORE THAN 30cm FROM THE
SURFACE OF THE OBJECTIVE LENS ON THE
OPTICAL PICK-UP BLOCK.

LASER WARNING LABEL

The label shown below are affixed.

1. Warning label

Laser Diode Properties

Material: GaAS/GaALAs
Wavelength: 780nm
Laser output: max. 0.5mW*
Emission Duration: continuous
*This output is the value measured at a distance about 1.8mm

from the objective lens surface on the Optical Pick-up Block.

2. Class 1 label

LUOKAN 1
LASERLAITE

"CLASS 1 LASER
PRODUCT"

KLASS 1
LASER APPARAT

SERVICE PROCEDURE

1. Replacing the fuses

This symbol located near the fuse indicates that the
fuse used is show operating type, For continued protection against
fire hazard, replace with same type fuse , For fuse rating, refer to
the marking adjest to the symbol.

Ce symbole indique que le fusible utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.

REF.NO.

F901

PART NO.

252157
252083

NOTE : <DT> : 120 V model only

<GT> : 220 V~230 V model only

2. To initialize the unit

1. Press and the hold down the CD STOP button , then press the
STANDBY/ON button.

2. After " All lighting " is displayed, the preset memory and each
mode stored in the memory, are initialized and will return to the
factory settings.

3. Press the STANDBY/ON button.

4. Unplug the AC plug from the wall outlet.

DESCRIPTION

1.25A-UL/T-237, Fuse <DT>

0.4A-SE-EAW, Fuse <GT>

3. Safety-check out

(Only U.S.A. model)
After correcting the original service problem perform the
follwing safety check before releasing the set to the customer
Connect the insulating-resistance tester between the plug of
power supply cord and terminal GND on the back panel.
Specifications: More than 10Mohm at 500V

4. Memory Preservation

This unit does not require memory preservation batteries. A built-in
memory power back-up system preserves the contents of the
memory during power failures and even when the unit is un-plugged.
The unit must be plugged in order to charge the back-up
system.
The memory preservation period after the unit has been unplugged
varies depending on climate and placement of the unit. On the
average, memory contents are protected over a period of a few
weeks after the last time the unit has been unplugged. This period
is shorter when the unit is exposed to a highly humid climate.

5. Changing the AM band step

With the exception of the worldwide models, a tuning step selector
switch is not provided. When you change the band step, change
the parts as shown below.

To 10kHz To 9kHz
R748 open 1 kohms
R749 1 koms open

R748 and R749 on the microprocessor PC board (NADG-6933)

3

FR-155

FRONT PANEL VIEW

MD disc slot

VOLUME control

ACOUSTIC

STANDBY/ON button

ENERGY SAVE button

REC MODE switc

Remote control sensor

PRESENCE

/indicator

CD disc tray

DISPLAY button

MD

CD/ MD TUNER AMPLIFIER

DISC LOADING MECHANISM

CD/ MD

FM/AM

button

MD
MD

button

button
CD/MD button
FM/AM button

OTHER

STANDBY/ON

ENERGY SAVE

WIDE RANGE AMPLIFIER
TECHNOLOGY

DISCRETE OUTPUT STAGE

ACOUSTIC
PRESENCE

VOLUME

MIN MAX

INPUTS

REC

CD DUBBING

MODE

AUTO/ MONO

OTHER INPUTS button
MD

REC button
CD DUBBING button
MODE button

AUTO/MONO button

button

CD
MULTI JOG dial

EDIT/CLEAR/NO button
REPEAT/YES button

CD

button

CD button

MULTI JOG

PUSH TO ENTER

EDIT/ CLEAR

REPEAT

NO

YESTUNING

PHONES

REC MODE

SP

LP2

MONO

h

LP4

DISPLAY

TIMER

PHONES jack

/ buttons

TUNING / buttons

DISPLAY

TIMER indicator

CD indicator

SOURCE indicator

Timer indicators

Recording level indicator

MUTING indicator

LEVEL-SYNC indicator

DIGITAL indicator

Playback mode indicators

SLEEP

SOURCE CD TIMER MD MDCHCD
ONCE
W.DAY
W.END
REC

MUTING
L

- 40 - 20 -10 0 OVER- 6 - 2-

R

LEVEL-SYNC DIGIT AL

CHAIN
REPEAT

1 TR MEMOR Y

RANDOM

DISC TRA CK ELAPSED REMAIN TITLE

CD MD

DUB

TUNEDSTEREOAUTOMONO

TIMER button

TOC

MD indicator
MD/CD setting indicator

Multi-purpose displa

s

y

CH (channel) indicator
When lit, the indicators show

what the mulit-purpose display
( Multi-purpose display) above
them is currently displaying.

TOC indicator

MD operation indicators

DUB indicator

CD operation indicators

Indicators for radio frequency
information

4

CONNECTING TO OTHER COMPONETS

FR-155

Connecting an Onkyo stereo
cassette tape deck

The illustration below describes the connections to an Onkyo stereo
cassette tape deck.

TAPE OUT (REC) and IN (PLAY) jacks of the unit to the INPUT (REC) and
OUTPUT (PLAY) jacks of the cassette tape deck, respectively.

Audio
connection
cable

LINE-1 LINE-2 TAPE

L

R

FR-155's rear panel

DIGITAL

OUT IN

OPTICAL

To connect to another cassette tape deck, connect the

Onkyo stereo cassette

: Signal flow

tape deck rear panel

INPUT OUTPUT

white

(REC) (PLAY)

L

red

R

OUT IN OUT IN

(

REC)(PLAY

WOOFER

REMOTE

CONTROL PRE OUT

CDR

)(

)

REC

SUB

cable supplied with
the Onkyo stereo
cassette tape deck

L

R

)(

PLAY

Audio connection
cable

REMOTE

CONTROL

Connecting a portable MD player

Refer to the portable MD playerÕs Instruction Manual.

: Signal flow

Audio
connection
cable

white

red

LINE-1 LINE-2 T

L

R

OUT

(

REC

ANTENNA

Rear Panel View

LINE-1 LINE-2 TAPE

OUT IN OUT IN

L

R

AM

(

REC)(PLAY

CAUTION: SPEAKER IMPEDANCE

4 OHMS MIN./ SPEAKER

DIGITAL

SUB

WOOFER

OUT IN

REMOTE

FM

CONTROL PRE OUT

75

OPTICAL

CDR

)(

)

PLAY)(REC

SPEAKERS

L

R

Connecting an Onkyo compact
disc recorder

The following diagram shows how to connect an
optional Onkyo compact disc recorder to the FR-155.
Connect its CDR OUT (REC) jacks and IN (PLA Y)
jacks to the disc recorderÕs INPUT (REC) jacks and
OUTPUT (PLAY) jacks respectively.

: Signal flow

LINE-1 LINE-2 TAPE

L

R

FR-155's rear panel

DIGITAL

OUT IN

OPTICAL

L

R

+–

+–

cable that comes

An
with the compact disc recorder

jack connection enables you to use the

The

following functions:

ANALOG

INPUT

OUTPUT

(REC)

L

R

K

red

white

Audio connection cable

OUT IN OUT IN

(

)(

REC)(PLAY

SUB

WOOFER

REMOTE

CONTROL PRE OUT

¥ You can control a connected Onky o compact disc

recorder from the FR-155' s remote controller.

¥ When the connected Onkyo compact disc recorder

plays bac k, the Input Selector on the FR-155 is
automatically switched to CD-R.

¥ To connect both CD recorder and a cassette tape

deck to the FR-155, connect the
both devices.

Jacks on the compact disc

recorder's rear panel

REMOTE

CONTROL

(PLAY)

L

REC

INPUT1 INPUT2

L

R

CDR

L

R

)(

)

PLAY

Optical fiber audio cable

DIGITAL

OPTICAL

OUTPUT

connectors of

Connecting a DVD player

In addition to the optical digital audio connections,you must also
make analog connections.To connect to the Onkyo DVD player, be
sure to connect to the LINE-1 jacks with the audio connection cable,
not the LINE-2 jacks.

DVD player

Digital

audio

output

Analog

audio output

L R

Audio connection
cable

Optical fiber
audio cable

: Signal flow

FR-155's rear panel

white

L

R

red

LINE-1 LINE-2 TAPE

DIGITAL

OUT IN

OPTICAL

OUT

(

REC)(PL

REMOTE

CONTROL PR

S

WO

Connecting a subwoofer

The FR-155 has a SUBWOOFER PRE OUT jack. Connect
an active subwoofer (a subwoofer that contains an amplifier),
or connect an amplifier to the FR-155, then connect a non­active subwoofer to the amplifier.

Active subwoofer

(with a built-in amplifier)

SUB

WOOFER

PRE OUT

Subwoofer

(without a built-in amplifier)

Amplifier

: Signal flow

5

FR-155

REMOTE CONTROLLER

STANDBY/ON button

CDR/TAPE/LINE/DIGITAL buttons

CD button

MD button

Number buttons

/TAPE REW button

MUTING button

button

MODE button

REPEAT button

CLEAR button

SCROLL button

STANDBY/ON SLEEP

TAPE REW

CD/MD/CDR

REPEAT

CLEAR

SCROLL

CLOCK

CALL

CDR TAPE LINE1 LINE2

CD MD FM AM

1 2 3 4

9 10/0 --/---

M

E

U

L

U

O

P

V

MUTING

V

N

O

L

W

U

O

M

E

D

MODE

REMOTE CONTROLLER

RC-434S

DIGITAL

INPUT

8765

A.PRESENCE

TAPE FF

CD

MD

CDR

TAPE

SLEEP button
CLOCK CALL button

FM/AM buttons

A.PRESENCE button

/TAPE FF button

VOLUME

/ buttons

button

CD operation buttons
MD operation buttons
Operation buttons for an Onkyo CDR
Operation buttons for an

Onkyo stereo cassette tape

dec

k

SETTING THE DAY OF THE WEEK AND THE TIME

You can select either the 12-hour display or
to set the time based on the 24-hour display.)

1

TIMER

2

MULTI JOG

PUSH TO ENTER

3

MULTI JOG

PUSH TO ENTER

4

MULTI JOG

PUSH TO ENTER

Press TIMER repeatedly
"Clock"

appears in the display.

SLEEP SOURCE C D TIMER M D M DCHC D
ONCE
W.DAY
W.END
REC

S.BASS

MUTING DIGITAL CHAIN

LEVEL - SYNC

L

-40-20-

-

10 0 OVER-6-2

R

Press MULTI JOG.

SLEEP SOURCE C D TIMER M D M DCHC D
ONCE
W.DAY
W.END
REC

S.BASS

MUTING DIGITAL CHAIN

LEVEL - SYNC

L

-40-20-

-

10 0 OVER-6-2

R

You can now set the day of the week.
If you prefer the 12-hour display, press

DISPLAY.

Turn MULTI JOG to select the
current day of the week.

SLEEP SOURCE C D TIMER M D M DCHC D
ONCE
W.DAY
W.END
REC

S.BASS

MUTING DIGITAL CHAIN

LEVEL - SYNC

L

-40-20-

-

10 0 OVER-6-2

R

Press MULTI JOG to confirm the

SLEEP SOURCE C D TIMER M D M DCHC D
ONCE
W.DAY
W.END
REC

S.BASS

MUTING DIGITAL CHAIN

LEVEL - SYNC

L

-40-20-

-

10 0 OVER-6-2

R

You can now set the time .

REPEAT
1 TR MEMORY
RANDOM

REPEAT
1 TR MEMORY
RANDOM

REPEAT
1 TR MEMORY
RANDOM

REPEAT
1 TR MEMORY
RANDOM

until

DISC TRACK ELAPSED REMAIN TITLE
RDS MONO AUTO STEREO TUNED

M D

C D

DUB TOC

DISC TRACK ELAPSED REMAIN TITLE
RDS MONO AUTO STEREO TUNED

M D

C D

DUB TOC

DISC TRACK ELAPSED REMAIN TITLE
RDS MONO AUTO STEREO TUNED

M D

C D

DUB TOC

DISC TRACK ELAPSED REMAIN TITLE
RDS MONO AUTO STEREO TUNED

C D

M D

DUB TOC

setting.

24-hour displa

DISPLAY

5

MULTI JOG

PUSH TO ENTER

6

MULTI JOG

PUSH TO ENTER

To cancel the clock setting

Press EDIT/CLEAR /NO.

y. (This section

explains how

1

Turn MULTI JOG to set the current

(This example

shows the 24-hour display.)

SLEEP SOURCE C D TIMER M D M DCHC D
ONCE
W.DAY
W.END
REC

LEVEL - SYNC

S.BASS

MUTING DIGITAL CHAIN

L

-40-20-

-

10 0 OVER-6-2

R

REPEAT
1 TR MEMORY
RANDOM

DISC TRACK ELAPSED REMAIN TITLE
RDS MONO AUTO STEREO TUNED

C D

Press MULTI JOG in sync with
signal.

SLEEP SOURCE C D TIMER M D M DCHC D
ONCE
W.DAY
W.END
REC

LEVEL - SYNC

S.BASS

MUTING DIGITAL CHAIN

L

-40-20-

-

10 0 OVER-6-2

R

The clock starts operating and a dot
indicating seconds starts to flash.

REPEAT
1 TR MEMORY
RANDOM

DISC TRACK ELAPSED REMAIN TITLE
RDS MONO AUTO STEREO TUNED

C D

2-6
EDIT/
CLEAR/NO

M D

DUB TOC

the time

M D

DUB TOC

time

.

Checking the time and the day of the week

To check the time and the day of the week, press
TIMER to display "Clock, then press DISPLAY.The
display now indicates the day of the week and the
current time.Alternatively,press CLOCK CALL on the
remote controller. To switch between the 12-hour and
24-hour displays,press DISPLAY while the current time
is indicated on the display.

STANDBY/ON SLEEP

CLOCK

CALL

DIGITAL

CDR TAPE LINE1 LINE2

CD MD FM AM

1 2 3 4

INPUT

CLOCK CALL

6

I C BLOCK DIAGRAM AND DESCRIPTIONS

FR-155

Q401:TC9273N-004 (Analog function switch)

VSS

VDD

128

2

S1
S2
S3
S4
S5
S6
S7
S8
S9

S10

OUT

10
11
12

3
4
5
6
7
8
9

10BITS LATCH CIRCUIT

LEVEL SHIFT AND

SHIFT REGISTER

13 14 15 16

GND CK DATA STB

10BITS LATCH CIRCUIT

27
26
25
24
23
22
21
20
19
18
17

S1
S2
S3
S4
S5
S6
S7
S8
S9

S10

OUT

Q103,Q181:TA7291S (Motor driver)

Vref

Vcc

2

8

REG

PROTECTOR

159

IN1 IN2 GND

INPUT

IN1

IN2
0
1
0
1

CCW : Counter clockwise direction
CW : Clockwise direction

OUTPUT

OUT1
0
0
1
1

OUT2

MODE

STOP

H
H

L

L
H
L

CW/CCW
CCW/SW

BRAKE

6

7

3

Vss

OUT1

OUT2

Q447:TC9162AN (Analog function switch)

S1

S2

S3

COM1

S4

S5

S6

COM2

S7

S8

COM3

ST

12

13

10

11

VSS

1

2

3

4

5

6

7

8

9

LATCH CIRCUIT

LEVEL SHIFTER

SHIFT REGISTER

GND

14

VDD

28

LATCH CIRCUIT

LEVEL SHIFTER

27

26

25

24

23

22

21

20

19

18

17

16

15

S1

S2

S3

COM1

S4

S5

S6

COM2

S7

S8

COM3

DATA

CK

7

FR-155

Q351:CXD2589Q (CD Digital Signal Processor)

Block Diagram

XTSL

VPCO

VCKI

V16M

VCTL

XUGF

GFS

EMPH

49

EFM

WFCK

56

54

C4M

RF

ASYI

ASYO

BIAS

XPCK

FILO

FILI

PCO

CLTV

52

52

35

35

37

37
38
36

36

48

48
30

30
31

31
29

29
33

38

33

51

51 25 26 27 28 47 49 54 56 50 39 41 43 55 40 42 44 62

25

Clock

28

26

47

27

OSC

Generator

demodurator

Asymmetry

Corrector

Digital

PLL

Sub Code
Processor

Error

Corrector

16K

RAM

C2PO

LRCK

39

50

D/A

Interface

Digital

OUT

PCMD

41

BCK

EMPHI

LRCKI

40

424344

55

Serial-In
Interface

Over Sampling

Digital Filter

Noise Shaper

PWM

PCMDI

BCKI

SYSM

62

3rd-Order

Timing

Logic

PWM

24

24

23

23

79

79

70

70
71

71

3

3

2

2

TES1
TEST

XRST

RMUT
LMUT

XTAI
XTAO

FOK

SEIN

CNIN

18

18
10

10
11

11

Servo

Auto

Sequencer

12 13 14 6 7 8 9 15 16 17 57 58 59 5 4 21 22 53 74 75 76 67 66 65

14

13

12

DATO

CLKO

XLTO

CPU

Interface

65

7

SENS

DATA

XLAT

15 16 17

CLOK

SPOA

XLON

SPOB

57

58

SCOR

9

8

59

EXCK

SBSO

4

SQCK

SQSO

Digital

CLV

21

MDP

22

53

PWMI

DOUT

74

LOUT2

75

76

AIN2

AOUT2

67

LOUT1

66

65

AIN1

AOUT1

8

PIN Description

Pin
No.

1
2
3
4
5
6
7
8

9
10
11
12
13

14
15
16
17
18

19
20
21
22
23
24
25
26
27

28

29
30
31
32
33
34
35
36
37
38
39
40
41

42

Symbol

VSS
LMUT
RMUT
SQCK
SQSO
SENS
DATA
XLAT

CLOK
SEIN
CNIN
DATO
XLTO

CLKO
SPOA
SPOB
XLON
FOK

VDD
VSS
MDP
PWMI
TEST
TES1
VPCO
VCKI
V16M

VCTL

PCO
FILO
FILI
AVSS
CLTV
AVDD
RF
BIAS
ASYI
ASYO
LRCK
LRCKI
PCMD

PCMDI

I/O

GND

—

Left-channel zero detection flag.

O

Right-channel zero detection flag.

O

SQSO readout clock input.

I

Sub Q 80-bit serial output.

O

SENS output to CPU.

O

Serial data input from CPU.

I

Latch input from CPU. Serial data is latched at the

I

falling edge.
Serial data transfer clock input from CPU.

I

SENS input from SSP.

I

Track jump count signal input.

I

Serial data output to SSP.

O

Serial data latch output to SSP. Latched at the falling

O

edge.
Serial data transfer clock output to SSP.

O

Microcomputer extended interface (input A).

I

Microcomputer extended interface (input B).

I

Microcomputer extended interface (output).

O

Focus OK input.

I

Used for SENS output and the servo auto sequencer.
Power supply (+5V).

—

GND

—

Spindle motor servo control.

O

Spindle motor external control input.

I

TEST pin; normally GND.

I

TEST pin; normally GND.

I

Charge pump output for the wide-band EFM PLL.

O

VCO2 oscillation input for the wide-band EFM PLL.

I

VCO2 oscillation output for the wide-band EFM

O

PLL.
VCO2 control voltage input for the wide-band EFM

I

PLL.
Master PLL charge pump output.

O

Master PLL (slave = digital PLL) filter output.

O

Master PLL filter input.

I

Analog GND.

—

Master VCO control voltage input.

I

Analog power supply (+5V).

—

EFM signal input.

I

Constant current input of the asymmetry circuit.

I

Asymmetry comparator voltage input.

I

EFM full-swing output (low = VSS, high = VDD).

O

D/A interface. LR clock output f = Fs.

O

LR clock input.

I

D/A interface. Serial data output (two's complement,

O

MSB first).
D/A interface. Serial data input (two's complement,

I

MSB first).

Description

Pin
No.

43
44
45
46
47

48

49

50

51

52

53
54

55

56
57

58
59
60
61
62
63
64
65
66
67
68
69
70

71
72
73
74
75
76
77
78
79
80

Symbol

BCK
BCKI
VSS
VDD
XUGF

XPCK

GFS

C2PO

XTSL

C4M

DOUT
EMPH

EMPHI

WFCK
SCOR

SBSO
EXCK
VSS
VDD
SYSM
AVSS
AVDD
AOUT1
AIN1
LOUT1
AVSS
XVDD
XTAI

XTAO
XVSS
AVSS
LOUT2
AIN2
AOUT2
AVDD
AVSS
XRST
VDD

I/O

D/A interface. Bit clock output.

O

D/A interface. Bit clock input.

I

GND

—

Power supply (+5V).

—

XUGF output. Switched to MNT1 or RFCK output

O

by a command.
XPLCK output. Switched to MNT0 output by a com-

O

mand.
GFS output. Switched to MNT3 or XRAOF output

O

by a command.
C2PO output. Switched to GTOP output by a com-

O

mand.
Crystal selector input. Low: 16.9344MHz;

I

high: 33.8688MHz.

4.2336MHz output. 1/4 frequency-divided VCKI out-

O

put in CAV-W mode.
Digital Out output.

O

Outputs a high signal when the playback disc has

O

emphasis, and a low signal when there is no emphasis.
Inputs a high signal when de-emphasis is on, and a

I

low signal when de-emphasis is off.
WFCK output.

O

Outputs a high signal when either subcode sync S0

O

or S1 is detected.
Sub P to W serial output.

O

SBSO readout clock input.

I

GND

—

Power supply (+5V).

—

Mute input. Active when high.

I

Analog GND.

—

Analog power supply (+5V).

—

Left-channel analog output.

O

Left-channel operational amplifier input.

I

Left-channel LINE output.

O

Analog GND.

—

Power supply for master clock.
Crystal oscillation circuit input. Input the external

I

master clock via this pin.
Crystal oscillation circuit output.

O

GND for master clock.
Analog GND.

—

Right-channel LINE output.

O

Right-channel operational amplifier input.

I

Right-channel analog output.

O

Analog power supply (+5V).

—

Analog GND.

—

System reset. Reset when low.

I

Power supply (+5V).

—

Description

FR-155

9

FR-155

Q101:CXA1992BR (RF Signal Processing Servo Amplifier)
Block Diagram

FE-BIAS

V

TEO

LPFI

TEI

ATSC

TZC

TDFCT

VC

FZC

O
RF

M

­FE

-

LDON

I

­RF

323334353637

VEE

LEVEL S

VEE

MIRR

VCC

LPCL

LPC

TGFL

IIL DATA REGISTER
INPUT SHIFT REGISTER
ADDRESS DECODER
SENS SELECTOR
OUTPUT DECODER

DFCTO IFB1-6

VCC

FS1

FS2

Charge

VEE

8

SRCH

BAL1-4
TOG1-4

up

CP

31

VCC

9

TGU

30

VEE

FS1-4 TG1-2

TG2

10

CB

MIRR

TG2

VCC

DFCT

IIL

TTL

TN1-7 PS1-4

TM3

FSET

11

CC1

DFCT1

FSET

CC2

2829

CC1

12

FOK

27

26

SENS2

IIL

TTL

TTL

IIL

ISET

VCC

VCC

TM4

TM6

TM3

TM5

VEE

VEE

13

O

M

-

­TA

TA

25

SENS1

24

C.OUT

23

XRST

22

DATA

XLT

21

CLK

20

LOCK

19

VCC

V

CC

18

ISET

17

16

SL-O

15

SL-M

14

SL-P

TM2

M

-

RFTC

RF SUMMING AMP

FO.BIAS
WINDOW COMP.

RF

FOK

FOH

FOL

TGH

TGL
BALH
BALL
ATSC

TZC

FZC

PD

VEE

APC

LASER POWER CONTROL

IFB5

IFB3

IFB4

TRK.GAIN
WINDOW COMP

LD

VEE

FE AMP

IFB6

PD1

PD2

3839

PD1 IV

PD2 IV

AMP

AMP

40

41

F

42

E

EI

43

EE

44

F IV AMP

E IV AMP

BAL1

BAL2

BAL3

TOG2

TOG3

BAL4

TOG4

VEE

TOG1

TGFL

VCC

VCC

IFB2

IFB1

VEE

45

E-F BALANCE

46

WINDOW COMP.

47

48

ATSC
WINDOW
COMP.

TZC COMP.

49

50

VCC

DFCT

TM1

TG1

TRACKING
PHASE COMPENSATION

51

VCC

VEE

52

FZC COMP.

12

FEI

FEO

FOCUS
PHASE COMPENSATION

DFCT

FS4

45

3

FDFCT

FGD

FLB

6

7

O

-

FE

10

Pin Description

Pin

Symbol

No.

1 FEO O

2 FEI Focus error input. I
34FDFCT

FGD I

5 FLB

6 FE_O
7 FE_M

8 SRCH

9

TGU

10 TG2

11

FSET

12 TA_M I Tracking amplifier inverted input.

TA_O

13
14

SL_P

15 SL_M
16 SL_O O Sled drive output.
17 ISET I Connect an external capacitance to set the current

18

VCC

19 LOCK I

20 CLK

XLT

21
22 DATA

XRST I Reset input; resets at Low. (no pull-up resistance)

23
24 C. OUT

SENS1

25

I/O

Focus error amplifier output.
Connected internally to the window comparator input
for bias adjustment.

I

Capacitor connection pin for defect time constant.
Ground this pin through a capacitor for cutting the

focus servo high-frequency gain.
External time constant setting pin for boosting the

I

focus servo low-frequency.

O

Focus drive output.
I Focus amplifier inverted input.
I

External time constant setting pin for generating

focus search waveform.
I External time constant setting pin for switching track-

ing high-frequency gain.

External time constant setting pin for switching track-

I

ing high-frequency gain.

Peak frequency setting pin for focus and tracking

I

phase compensation amplifier.

O Tracking drive output.

I Sled amplifier non-inverted input.
I Sled amplifier inverted input.

which determines the Focus search, Track jump, and

Sled kick heights.
I Positive power supply.

The sled overrun prevention circuit operates when

this pin is Low. (no pull-up resistance)
I

Serial data transfer clock input from CPU.

(no pull-up resistance)
I

Latch input from CPU. (no pull-up resistance)

Serial data input from CPU. (no pull-up resistance)

I

O

Track number count signal output.

O

Outputs FZC, DFCT1, TZC, BALH, TGH, FOH,

ATSC, and others according to the command from

CPU.

Description

FR-155

Pin

Symbol

No.

26 SENS2 O

27

FOK

28

CC2 I

CC1

29

30 CB I Connection pin for defect bottom hold capacitor.
31 CP

32

RF_I I

33 RF_O O
34 RF_M

35 RFTC I

LD O APC amplifier output.

36
37 PD I APC amplifier input.

PD1

38
39

PD2

40

FE_BIAS

41

F

42IE
43 EI

44

VEE
45 TEO O
46 LPFI I Comparator input for balance adjustment.

47

TEI

ATSC

48
49

TZC
50

TDFCT
51

VC
52 FZC

I/O

Outputs DFCT2, MIRR, BALL, TGL, FOL, and
others according to the command from the CPU.

O Focus OK comparator output.

Input for the defect bottom hold output with capa­citance coupled.

O Defect bottom hold output. Connected internally to

the interruption comparator input.

Connection pin for MIRR hold capacitor.

I

MIRR comparator non-inverted input.
Input for the RF summing amplifier output with capa-

citance coupled.
RF sunning amplifier output. Eyepattern check point.
RF summing amplifier inverted input.

I

The RF amplifier gain is determined by the resistance
connected
between this pin and RFO pin.

External time constant setting pin during RF level
control.

I

RF I-V amplifier inverted input. Connect these pins
to the photo diode A + C and B + D pins.

I
I

Bias adjustment of focus error amplifier.
Leave this pin open for automatic adjustment.

I

F I-V and E I-V amplifier inverted input.
Connect these pins to photo diodes F and E.

—

I-V amplifier E gain adjustment.
(When not using automatic balance adjustment)

—

Negative power supply.
Tracking error amplifier output. E-F signal is output.

(Input from TEO through LPF)
Tracking error input.

I

Window comparator input for ATSC detection.

I
I

Tracking zero-cross comparator input.

I

Capacitor connection pin for defect time constant.

O (VCC + VEE)/2 direct voltage output.

I

Focus zero-cross comparator input.

Description

11

FR-155

Q102:LA6541D (CD 4-channel BTL Driver )

Vcc

Mute

VIN1

VG1

Vo1

Vo2

GND

GND

GND

Vo3

Vo4

VG2

VI2

Reg OUT

Reg IN

10

11

12

13

14

15

Pin No. Pin Name Description

Vcc

1

2

3

Level shift

1

Level shift

4

4

5

BTL AMP

1

BTL AMP

4

6

30

29

28

27

26

25

Vref

VIN4

VG4

Vo8

Vo7

1
2
3
4
5
6
7
8
9
10
11
12

GND

7

8

Vcc

24

23

GND

13
14
15
16

GND

9

22

17
18

BTL AMP

2

BTL AMP

3

21

20

Vo6

Vo5

19
20
21
22

Level shift

2

Level shift

3

19

18

VG3

VIN3

23
24
25
26

Regulator

RESET

17

16

CD

RES

27
28
29
30

VCC

Mute ON/OFF control for all BTLAMP outputs

VIN1

VG1 BTL AMP 1 input (for gain control)

Vo1

Vo2

GND GND (minimum electric potential)
GND GND (minimum electric potential)
GND GND (minimum electric potential)

V

O

V

O

VG2 BTL AMP 2 input (for gain control)

V

IN

REG OUT Connection for collector of external transistor (PNP); 5 V supply output

REG IN Connection for base of external transistor (PNP)

RES

C

V

IN

VG3 BTL AMP 3 input (for gain control)
V

O

V

O

GND GND (minimum electric potential)
GND GND (minimum electric potential)
GND GND (minimum electric potential)

V

O

V

O

VG4 BTL AMP 4 input (for gain control)

V

IN4

V

REF

V

CC

Power supply (shorted with pin 30)

BTL AMP 1 input

BTL AMP 1 output (non-inverting side)
BTL AMP 1 output (inverting side)

3 BTL AMP 2 output (inverting side)
4 BTL AMP 2 output (non-inverting side)

2 BTL AMP 2 input

Reset output
Reset output delay time setting (with capacitor)

D

3 BTL AMP 3 input

5 BTL AMP 3 output (non-inverting side)
6

BTL AMP 3 output (inverting side)

7 BTL AMP 4 output (inverting side)
8 BTL AMP 4 output (non-inverting side)

BTL AMP 4 input
Reference voltage input for level shift circuit
Power supply (shorted with pin 1)

(Function)

Q171:BU1923(RDS Decoder)

100k

(4)

MUX

VREF

VDD1

VSS1

VDD2

VSS2

120k

(3)

(5)

(6)

(12)

(11)

Analog
Power supply

Digital
power supply

(13) (14)

X1

XO

100k

PLL

57kHz

RDS/ARI

Reference

+

anti-aliasing

filter

clock

PLL

1187.5Hz

capacitor filter

8ch Switched

Bi-phase

decoder

Measurement

(10)

VSS3

circuit

CMP

(7)

Comparator

Differential

decoder

(9)

T2T1

(8)

(16)

(1)

(2)

Pin No.

RCLK

QUAL

RDATA

Symbol

QUAL

1

RDATA

2
3
4

VDD1

5
6
7
8
9

10

VDD2

11
12
13
14
15

RCLK

16

Vref

MUX

Vss1
Vss3
CMP

T2
T1

Vss2

XI

XO

(NC)

Pin name
Demodulator quality
Demodulator data
Reference voltage
Input
Analog power supply

GND
Comparator input
Test input

Digital power supply

Crystal oscillor

-
Demodulator clock

Function
Good data : High , bad data : Low
Refer to output data trimming
1/2 VDD1 (refer to input/output circuits)
Composite signal input

4.5V to 5.5V

­C-junction
Open or connected to ground

4.5V to 5.5V

Connects to 4.332MHz oscillator
(refer to input/output circuit)

-

1187.5Hz clock

12

Q752:M66004F (FL Tube Driver)

FR-155

Chip select

input

Shift clock

input

Serial data

input

Reset

input

Clock

input

Clock

output

CS

SCK

SDATA

RESET

XIN

XOUT

15

16

13

21

22

14

Serial
receive
circuit

Clock

generator

Display code
register

code
write

Code /

command

control

circuit

Display

control

register

RAM

write

code
select

Display controller

CG ROM

(35bit 160)

Decoder

CG RAM

(35bit 16)

Decoder

Segment
output circuit

Output port

(2bits)

Digit

output circuit

12

59

33

31

23

18

17

1

64

61

SEG00

SEG26

SEG27

SEG35

P0

P1

DIG00

DIG11

DIG12

DIG15

Segment
output

Output
ports

Digit
outputs

Pin No.

13
14

15
16

21,
22

1-12
61-64

23-31
33-59

17,18

19
60
22

32

Symbol Pin name Function

RESET Reset input This pin is used to initialize the internal state on the M66004
CS Chip select input

"L" : communication with the MCU is possible.
"H" : any instruction from teh MCU is neglected.

SCK Shift select input At the rising edge from "L"to"H" , input data is shifted.
SDATA Serial data input Character code or command data to display is input from MSB.

XIN,
XOUT

DIG00 -

Clock input
Clock output

Digit output

Set oscillation frequency

These pins are used to connect to digit pins of VFD.

DIG15

SEG00 -

Segment output

These pins are used to connect to segment pins of VFD.

SEG35
P0,PI Output port (static operation)

VCC1
VCC2
VSS

Positive power supply for internal logic.
Positive power supply for high-pressure-resistant output port.
GND

VP Negative power supply for VFD drive.

13

FR-155

Q751:BJ780GNK(FL T ube)

13G 12G 11G 10G 9G 8G 7G 6G 5G 4G 3G 2G 1G

Dp

SLEEP SOURCE C D TIMER M D M DCHC D
ONCE
W.DAY
W.END
REC

S.BASS

MUTING DIGITAL

LEVEL - SYNC

L

-

-

40-20-10 0 OVER

-

S2

-

6

2

R

1-1 2-1 3-1 4-1 5-1

1-2 2-2 3-2 4-2 5-2

1-3 2-3 3-3 4-3 5-3

1-4 2-4 3-4 4-4 5-4

1-5 2-5 3-5 4-5 5-5

1-6 2-6 3-6 4-6 5-6

1-7 2-7 3-7 4-7 5-7

(12G 1G)

(13G)

L

-

R

(14G)

Col-2

CHAIN
REPEAT
1 TR MEMORY
RANDOM

S1

B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 B22

-

40

B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11

C D

S3

DISC TRACK ELAPSED REMAIN TITLE
RDS MONO AUTO STEREO TUNED

C D

-

20

-

10 0 OVER

DUB TOC

14G

-

6

M D

S4

Col-1

M D

-

2

14G 13G 12G 11G 10G 9G 8G 7G 6G 5G 4G 3G 2G 1G

P1
P2
P3
P4
P5
P6
P7
P8

P9
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P33
P34
P35
P36

CHAIN

REPEAT

1 TR

MEMORY
RANDOM

DISC

TRACK

ELAPSED

REMAIN

TITLE

RDS

MONO

AUTO

STEREO

TUNED

S3

(CD)
(CD)

DUB

S4

(MD)
(MD)
(MD)

TOC

(TITLE)

-

-

-

-

-

-

-

-

-

-

-

B1

B8
B12
B19

S1

B2

B9
B13
B20

S2

B3
B10
B14
B21

OVER

B4
B11
B15
B22

SLEEP

B5

ONCE

B16

W.DAY

W.END

B6

REC

S.BASS
MUTING

B18

LEVEL-SYNC

B7

DIGITAL

-

B17

-

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

SOURCE

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

-

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

CD

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

TIMER

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6
Dp

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

col 2

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

MD

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

-

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

MD

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

CD

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

col 1

1-1
2-1
3-1
4-1
5-1
1-2
2-2
3-2
4-2
5-2
1-3
2-3
3-3
4-3
5-3
1-4
2-4
3-4
4-4
5-4
1-5
2-5
3-5
4-5
5-5
1-6
2-6
5-7
4-7
3-7
2-7
1-7
5-6
4-6
3-6

CH

14

MICROPROCESSOR CONNECTION DIAGRAM

Q751

FL TUBE

REMOTE

SENSOR

15

AC IN

Q753

P907

to POWER
SUPPLY

NAPS-6928

REC MODE SW

ST

LP2

LP4

YES

CD

STOP

CD

PLAY

REC

OTHER

INPUT

CD

EDIT

EJECT

/NO

MULTI JOG

MD MECHANISM

CN105

RC DATA

RC REQ

SHUT DOWN

MD REQ-2

15

MD CLK

F901

P913B

D901

Q901

POWER

16
17

MD RST

MD DATA-2

14 AMOT

15

CN102

RELAY DRIVE

2

5
6

RL901

F.F

MONO

MD

FM

/CDMDSTOPMDPLAY

/AM

ENERGY

SAVE

Q902

POWER

SWITCH

REW

STANDBY

T901

AMP

Q112

M66004F

DISPLAY

A.PRES

RL902

+5.6 V

Q752

FL TUBE
DRIVER

TIMER

MD

EJECT

MODE

Q391

BUFFER

TO POWER AMP

PC BOARD

(NAAF-6930)

+B

1G 14G

1 12,60 64

GRID

+5 V

+5.6 V

CD.DUB

Q203,Q204

MD MUT

Q112

Q112

CD POWER

CONTROL

RESCSSCK
131415

P1 P36

23 31,33 59

SEGMENT

DATA

16

1 ROTEN 2
2 ROTEN 1

3 FLRESET
4 GND
5 SHUT DOWN
6 RCREQ
7 +5 V

8 MD DATA
9 RC DATA
10 S CLK
11 FLCE
12 FL DATA
13 FL CLK
14 TXD
15 RXD
16 SQSO
17 SESN
18 SQCK
19 CD CLK
20 CD DATA

Q222 TC4052BP

REC LEVEL

CONTROL

SIGNAL 80

21 CD XLT

K 2 78

K 1 77

MD REC MODE 79

22 CD RESET

23 CD POWER

24 OPEN

X701 5MHz

+5.6 V

72

K 0 76

+5 V 75

+5 V 74

GND 71

GND 73

Q701

MPD780058GC

MICROPRCESSOR

25 CLOSE

26 AC POWER

27 OPEN SW

28 CLOSE SW

29 SENS 2

30 ECO LED

+5.6 V

IN2
IN1

TRAY MOTOR DRIVER

+5.6 V

+5 V 68

GND 67

CLOCK 70

CLOCK 69

MD REQ 66

31 REC VOL 1

32 REC VOL 2

33 GND

34 RC POWER

35 MD RESET

Q449 POWER

2
1
9

5

Q103 TA7291S

POFF 63

SCOR 65

RDS CLK 64

36 BAND 0

37 BAND 1

38 AM 10K

AMPLIFIRE

CONTROL

3

OUT2

7

OUT1

MD MECHA
AUX-MD IN
A MUTE
MD OUT

+5.6 V

D OUT 62

REMIN 61

39 RD SEN

40

Q705

RESET

IN

OUT

RESET 60

SYS OUT 59

SYS IN 58

VOL DOWN 57

VLO UP 56

RDS DATA 55

RDS SIG 54

PLLCE 53

SD 52

STEREO 51

MODEL 1 50

FREQCAL 49

C DATA 48

C CLK 47

TU MUT 46

FCE/VCE 45

REC MUT 44

AP LED 43

SEL MUT 42

CD MUT 41

9
8
7

Q351

6

CXD2589Q

5

CD DIGITAL

4

SIGNAL

79

PROCESSOR

19

Q704

Q371

TC74HCT00AF

BUFFER

Q372

TC7WU04FU

BUFFER

Q401

TC9273N-004

INPUT

Q703

RESET

SELECTOR

+5.6 V

Q447

TC9162AN

ACOUSTIC

PRESENCE SELECTOR

Q171 BU1923

Q253

TUNER MUTING

Q223,Q224

Q707

MUT

Q448

SEL MUT

Q702

CD MUT

57

Q112

20
21
22
24
25

27
23

26

15

19

30

Q101

CXA1992BR

RF SIGNAL

PROCESSING

SERV O AMP

28 3 13

Q102

LA6541D

FOCUS

/TRACKING

& SLED

/SPINDLE

MOTOR
DRIVER

14
13
12
11
10
18

15

21

MD REC
MUTING

Q443

,Q444

Q114 LD DRIVE

37

36
39

38
41
42

1361615

5

6
10
11

25
26

21
20

Q171

BU1923

VOLUME MOTOR

DRIVER

2
1

IN2
IN1

9

5

RDS

DECODER

ENERGY

SAVE

LED

TUNER UNIT

3

7

+5 V

OUT2
OUT1

PLLCE
SD
STEREO
SIGNAL
DAT A
CLK

LD

S.STOP

Q372

OUT

DIGITAL

OPTICAL

Q372

IN

VOLUME

MOTOR

M

RI

REMOTE

CONTROL

ACOUSTIC

PRESECE

LED

Q706

LED DRIVE

PD

E

A

B

C

F

FOCUSING
COIL

TRACKING
COIL

SLED

M

MOTOR

M

SPINDLE
MOTOR

OPEN
/CLOSE SW

M

TRAY
MOTOR

ANTENNA

FM

AM

FR-155

MICROPROCESSOR TERMINAL DESCRIPTION

Q701:MPD780058GC-8BT

16

PIN
No.

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

Function

ROTEN2
ROTEN1
FLRESET
GND
SHUTDOWN
RCREQ
AVDD
MDDATA
RCDATA
SCLK
FLCE
FLDATA
FLCLK
TXD
RXD
SQSO
SENS
SQCK
CDCLK
CDDATA
CDXLT
CDRESET
CDPOWER
OPEN
CLOSE
ACPOWER
OPENSW
CLOSESW
SENS2
ECOLED
RECVOL1
RECVOL2
GND
RCPOWER
MDRESET
BAND0
BAND1
AM10K
RDSEN

I/O

I

Pulse input pin 1 from rotary encoder.

I

Pulse input pin 2 from rotary encoder.

O

Reset signal output pin for FL driver IC(M66004)

I

Ground pin.

O

Output pin of power failure signal for MD mechanism microcomputer.

O

Serial data output pin for communication of MD microcomputer.

I

Power supply pin for A/D converter.

I

Serial transfer data input pin from MD mechanism microcomputer.

O

Serial transfer data output pin to MD mechanism microcomputer.

O

Serial transfer clock output pin to MD mechanism microcomputer.

O

Chip enable signal output pin for FL drover IC(M66004).

O

Serial data output pin for FL drover IC(M66004).

O

Clock data output pin for FL drover IC(M66004).

O

Output pin for flash writer.

I

Input pin for flash writer.

I

Input pin of subcode data from CD signal processor IC(CXD2589).

I

Input pin of sens data from CD signal processor IC(CXD2589).

O

Clock signal output pin for read out to signal processor IC(CXD2589).

O

Command output pin for transfer the clock signal to CD signal processor IC(CDX2589).

O

Command output pin for transfer the data signal to CD signal processor IC(CXD2589).

O

Command output pin for transfer the latch signal to CD signal processor IC(CXD2589).

O

Reset signal output pin for CD circuit ICs(CXD2589,CXA1992)

O

Control signal output pin for CD circuit.

O

Control signal output pin for motor driver IC of CD tray.

O

Control signal output pin for motor driver IC of CD tray.

O

Control signal output pin for relay of main power supply.

I

Detection signal input pin for the opening completion of CD tray.

I

Detection signal input pin for the closing completion of CD tray.

I

Sens2 signal input pin from CD servo IC(CXA1992)

O

Control output pin of energy save indicator.

O

Output pin 1 for MD recording level adjust IC.

O

Output pin 2 for MD recording level adjust IC.

I

Ground pin.

O

Output pin for control relay of power supply in receiver section.

O

Output pin of reset signal for MD mechanism.

I

Initializing input pin 1 for FM band.

I

Initializing input pin 2 for FM band.

I

Initializing input pin 2 for AM band step.

I

Initializing input pin of RDS function. (H=Function, L=Not function)

I

Not used.(ground)

Description

PIN

Function

No.

CDMUT

41

SELMUT

42

APLED

43

RECMUT

44

FCE/VCE

45

TUMUT

46

CCLK

47

CDATA

48

FREQCAL

49

MODEL1

50

STEREO

51

SD

52

PLLCE

53

RDSSIG

54

RDSDATA

55

VOLUP

56

VOLDOWN

57

SYSIN

58

SYSOUT

59

RESET

60

REMIN

61

DOUT

62

POFF

63

RDSCLK

64

SCOR

65

MDREQ

66

GND

67

VDD

68

CLOCK

69

CLOCK

70

GND

71
72

GND

73

VDD

74

AVDD

75

K0

76

K1

77

K2

78

MDRECMODE

79

SIGNAL

80

I/O

Muting signal output pin for CD analog signal.

O

Muting signal output pin for audio section.

O

Control output pin of acoustic presence indicator.

O

Muting signal output pin for muting of MD recording signal.

O

Chip enable signal output pin for function ICs(T9273,TC9162).

O

Muting signal output pin for tuner signal.

O

Clock data output pin for Ics of receiver section.

O

Serial data output pin for Ics of receiver section.

O

Output pin for adjustment of main clock frequency

O

Initialization input pin for model set.

I

FM stereo broadcast detection input pin.

I

Broadcast detection input pin.

I

Chip enable signal output pin for tuner PLL IC.

O

Not used.

I

Not used.

I

Control output pin for motor driver IC of volume.

O

Control output pin for motor driver IC of volume.

O

System code input pin.

I

System code output pin.

O

System reset input pin.

I

Signal input pin from remote sensor.

I

Control output pin for CD/MD digital output selector. (H=CD, L=MD)

O

Power failure detect input pin.

I

Not used.

I

Detection signal input pin CD signal processor IC(CXD2589).

I

Signal input pin for communication from MD mechanism microprocessor.

I

Ground pin.

I

Power supply pin. (+5V)

I

Master clock connection pin.

O

Master clock connection pin. (connect the trimming capacitor)

I

Not used. (connect ground)

I

Not used.

O

Not used. (connect ground)

I

Power supply pin. (+5V)

I

Power supply for A/D converter.

I

Operation key-1 connection input pin.

I

Operation key-2 connection input pin.

I

Operation key-3 connection input pin.

I

Connect the MD recording mode serector.

I

Signal level input pin for automatic memory.

I

Description

FR-155

OPERATION OF THE MICROPROCESSOR

OPERATION OF THE MICROPROCESSOR TERMINAL LINKED WITH THE ENERGY SAVE FUNCTION

In the energy save mode (including the preparation period). only the STANDBY/ON button and the ENERGY SAVE button can be operated.
60 seconds after the energy save is operated. the microprocessor is turned to the energy save mode.
Even if the AC cord is removed. the energy save mode is stored. (the stored period is about 2 or 3 weeks that are the same as the stored
period of the preset values for the tuner.) When the initial values are set. the energy save mode is released.

(*1) : The back-up voltage for the microprocessor is supposed to be 0 volt after the initial values are set.
(*2) : The energy save mode is set when the power supply is on.
When the ENERGY SAVE button is pressed in the stand-by state. you can also enter the energy save mode.

SETTING
OPERATION

SET. STATE

ENERGY SAVE LED

FL TUBE

Q701 (Microprocessor)
Terminal
NO.

60

Function
Name

RESET

Connect the
AC cord.(*1)

Power
supply
is off.

Light goes out.

Time is
indicated.

Press the
STANDBY/ON
button.

Stand-by
state

Light goes out.

Press the
ENERGY SAVE
button.(*2)

Power supply is turned ON.

Light comes on.

Press the
STAND/BY
button.

Energy save

(under preparation)

Energy save mode

Light blinks. Light comes on.
After the " Energy save " is

scrolled. the light goes out.

Press the
ENERGY SAVE
button.

Stand-by

Light goes out.

Time is
indicated.

Disconnect
the AC cord.

Power
supply
is off.

FR-155

AC POWER

26

MD

ON
ON
ON

60 sec.

60 sec.

CD

CONTROL

ON

OFF

FM/AM

ON

CONTROL

OFF

RC POWER

34

SEL MAT

42

35
3

MDRESET

FLRESET

1sec.

OPERATION of RECVOL1 and RECVOL 2

Analog switch (TC-4052) is controlled here.

Terminal
No.

31
32

Function
Name

REC VOL1
REC VOL2

1

L
L

Rec. Level

2

3

H

L

L

H

OTHER OPERATIONS

1sec.

4

H
H

5 sec.

OPERATION of CDMUT. TUMUT and REC MUT

ON means that the mute function is always on and OFF means that the mute function is always off.
The mute functions shown by CONTROL become ON or OFF according to the set states.

41
46
44

Function
Name

CD MUT
TU MUT
REC MUT

Terminal
No.

H means the high level and L means the low level. The state shown by CONTROL varies with the set state.

Terminal
No.

3
5
6

9
10
11
12
13
14
15
18
19
20
21
22
23
24
25
26
30

Function
Name

~FLRESET
~SHUTDOWN
~RICKRACK
RCDATA
~SILK
~FACE
FLAT
~FLCLK
TAD
RED
~SACK
~CDCLK
CDDATA
~CDXLT
~CDRESET
CDPOWER
~OPEN
~CLOSE
ACPOWER
EQUALLED

Input Selector

CD

CONTROL

H
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL

L

L
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL

H

CONTROL

CD Except

CONTROL

CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL

L
L
L
L
L
L
L
L
H
H
H

CONTROL

In stand-by
state

CONTROL

CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL

CONTROL

H

L
L
L
L
L
L
L

L
H
H
H

In energy
save state

L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L

CONTROL

Terminal
No.

31
32
33
34
35
41
42
43
44
45
46
47
48
49
53
56
57
59
62

Function
Name

RECVOL1
RECVOL2
GOD
RCPOWER
~MDRESET
CDMUT
SELMUT
AILED
RECUT
FCE/VCE
TUMULT
CLACK
DATA
FRECKLE
PLACE
~VOLUP
~VOLDOWN
~SYSOUT
DOLT

CONTROL
CONTROL

CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL

CONTROL
CONTROL
CONTROL
CONTROL
CONTROL

Input Selector

TAPE

CD R

ON

ON

ON

ON

OFF

OFF

Input Selector

-

H

L

CD Except

CONTROL
CONTROL

H

CONTROL

L
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL

L
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL

CD

1sec.

-

LINE-1

ON
ON

OFF

In stand-by
state

CONTROL

LINE-2

ON
ON

OFF

L
L

­L
H
L
H
L
H
L
H
L
L
L
L
H
H

L

DIGITAL

ON
ON
ON

In energy
save state

L
L

­L
L
L
H
L
H
L
H
L
L
L
L
L
L

CONTROL

L

17

FR-155

MD MECHANISM EXPLODED VIEW(1)
(KMK-260BCN)

35

34

35

35

13
11

9

SW1-SW4

19

15

14

16

17

10

18

8

32

3

4

7

6

5

13

11

26

31

20

33

21

23

24

27

Ref. No. Part No. Description

Motor Plate ass'y
Screw(+PTT2.6 4 Type S)
L-SW pc board
Flexible flat cable(5 core)
Gear(Relay B)
Gear(Relay A)
Slot Frame ass'y
Spring(Slot arm), Tension coil
Slot Arm
Load Frame ass'y
Insulator
Screw, Step
Slide Frame
Head Arm,
Spring, SP Tension

10
11
13
14
15
16

1
2
3
4
5
6
7
8
9

-

7685-790-09

-

­2646-555-02
2646-554-11

X2646-249-1

2646-563-01
2646-556-01

­2646-548-01
2647-337-01

­2646-559-02
2646-561-01

2

1

2

30

Parts which have been described to the
NOTE column of the undermentioned
part list as NSP are not supplied.

NOTE

NSP

NSP
NSP

NSP

NSP

Ref. No. Part No. Description

17
18
19
20
21
23
24
26
27
30
31
32
33
34
35

2646-562-01
2646-560-02
1669-181-11
2627-529-01
1500-518-11

­7685-791-09
2646-545-01

­X2626-328-1
7627-852-38
7685-780-09

-

­7621-259-25

Spring
Gear
Head flexible pc board
Screw (+P1.7 2.5)
MD Over write head
MD mount
Screw (+PTT2.6 5 Type S)
Spring(Door arm), Tension coil
Case(Lower)
Loading motor ass'y
Special screw(+P1.7 1.8 Type 3)
Screw (+TT2 3 Type S)
Loading ass'y
Case(Upper)
Screw (+P2.6 4)

NOTE

NSP

NSP

NSP
NSP

18

MD MECHANISM EXPLODED VIEW(2)

FR-155

(KMK-260BCN)

51

55

54

52

54

53

57

69

65

65

56

66

64

67

70

58

51

62

61

63

74

71

72

51

Ref. No. Part No. Description

51
52
53
54
55
56
57
58
61
62
63
64
65
66
67
68
69
70
71
72
74

2627-404-01
2646-453-01
1783-387-11
7627-850-79
1677-526-11

-

­1669-180-11
2646-452-01
2627-529-01
2647-338-01
2646-567-01
2627-431-01

X2626-329-2

2646-571-11
7627-852-18

X2626-327-1
X2626-330-1

2646-574-03
2646-573-01

A4672-541-A

Screw (+P1.4 3.5 Type3)
Sub Guide
Flexible flat cable(7 core)
Special screw(+P1.4 1.8 Type 3)
D-SW pc board
Mechanical Chassis
Bracket, Spindle motor
Flexible pc board, Optical pick-up
Guide Shaft
Screw (+P1.7 2.5)
Rack Spring
Pre load Plate
Special screw(1.2 3.3)
Slid motor ass'y
Gear (MD)
Special screw(+P1.7 4 Type 3)
Spindle motor Ass'y
Lead screw Ass'y
Lead holder(A)
Lead holder(B)
KMS-260A/JIN

68

NOTE

NSP
NSP

19

Parts which have been described to the NOTE column
of the undermentioned part list as NSP are not supplied.

Ref. No. Part No. Description

-

-

­IC101
IC102
IC103
IC104
IC121
IC122
IC125
IC152
IC171
IC181
IC201
IC301

Q101,Q163

Q102
Q162
Q181
Q182
Q303
D101

D181,D183

X201

SW1~4

SW5
CN101
CN102
CN103
CN104
CN105
CN107
CN110

-

-

­8752-080-95
1781-569-21
8729-903-10
8759-689-63
8752-404-64
8759-234-20
8759-498-44
8759-574-24
8759-640-39
8759-523-35
8759-919-21
8759-689-64
8729-028-91
8729-026-52
8729-101-07
8729-018-75
8729-017-65
8729-028-73

223233R1
8719-046-87
1767-179-31
1771-092-21
1771-327-11
1691-385-21
1774-794-11
1779-341-11
1778-283-11
1779-345-11

-

1779-353-21

L-SW PWB
D-SWPWB
MD PWB
CXA2523AR
90 MHz
FMW1-T-148
RH5RZ35CA-TI
CXD2662R
TC7S08F
MSM51V4400D-70TSK
BA5984FP-E2
BR24C02F-WE2
TC74ACT02FT(EL)
CXP740010-048R
AK4522VF-E2
DTA144EUA-T106
2SA1576A-T106-QR
2SB798-T1DK
2SJ278MY
2SK1764KY
DTA114EUA-T106
1SS355TE-17
F1J6, Diode
12 MHz, Crystal
Push switch(1key)
2pin push switch (2key)
FFC/FPC connector 21P
FFC/FPC connector 26P
FFC/FPC connector 23P
FFC/FPC connector 4P
FFC/FPC connector 7P
FFC/FPC connector 5P
FFC/FPC connector 5P

NOTE

NSP
NSP
NSP

NSP

FR-155

MD MECHANISM DISASSEMBLY

1

MD Mechanism KMK-260BCN

Remove the spring(Z3) from the door MD(Z3).

2

Remove the case (lower)(27) by unscrewing the four

5

screws (step)(13).

Screw(step)

Screw(step)

Remove the two special screws(31)used to

6

fix the loading motor.

Screw(step)

Screw(step)

Special Screw(31)

Door MD(Z2)

Remove the spring(26) from the case (lower)(27).

3

Spring(26)

Remove the case (upper)(34) by unscrewing the

4

five screws.

Screw

Screw

Spring(Z3)

Case (lower)(27)

screw

Remove the screw(24) used to fix the

7

MD mount(23)

Keep the MD mount(23) upright.

8

MD mount(23)

Screw(24)

Screw

Pickup unit(74)

Screw

Case (upper)(34)

20

MD MECHANISM DISASSEMBLY

Short circuit with solder the short land on the
pick-up unit(74).

9

[NOTE]

Do not do the work of before completing the work of .

8

short land

FR-155

Remove the gear(18).

9

13

Remove the gear(18)

Disconnect the four flexible flat cables.

10

flexible flat cables

Remove the MD overwrite-head(21) by

11

unscrewing the screw(20).

Remove the motor plate ass'y(1).

14

Remove the mechanical chassis(56) from the load

15

flame ass'y(10).

mechanicl chassis(56)

screw(20)

Remove the two screws(2) used to fix the

12

motor plate ass'y(1).

motor plate ass'y(1)

screws(2)

21

Load flame ass'y(10)

16

load flame ass'y(10)

18

17

FR-155

MD MECHANISM DISASSEMBLY

Remove the screw(51) used to fix the guide shaft(61).

17

Guide shaft (61)

Lead holder B(72)

Screw(51)

Loosen the screw(51) used to fix the guide shaft (61).

18

Lead holder A(71)

Remove the pick-up unit(74).

19

Pick-up unit(74) is exchanged.

20

Pick-up unit(74)

Screw(51)

MD MECHANISM REASSEMBLY

1. To reassemble each mechanism, reverse the applicable disassembling procedure.

2. Do not do unsoldering short land on the pick-up unit before connecting the flexible flat cables.

3. When motor plate ass'y is installed in the MD mechanism, it is necessary to note the position of the gear.
And it is necessary to place the push switch on L-SW prited circuit board (3) and note not getting crowded.

22

MD RECORDING ADJUSTMENT PROCEDURES

1.TEST MODE

1. Precaution for using the test mode

(1)

It is necessary to adjust in the test mode.
Make clear the test mode after ending the adjustment.

(2)

In the following, the rotation of the disc dose not stop even if EJECT key is pushed.

(3)

CPLAY MODE , CREC MODE

Take out the disc pushing EJECT key after the rotation of the disc is stopped pushing EDIT/CLEAR/NO key once.
In the following, the function of the mis-deletion prevention becomes invalid.

(4)

Note when you use the disc not deleted for the adjustment.

LDPWR ADJUST, LDPWR CHECK, CREC MODE, CPLAY MODE, EFBAL ADJUST
and press the REC key.

FR-155

2. Setting the test mode

The set is put into the state of the standby again pushing

(1)

The power supply code is inserted in the wall outlet.

Press the STANDBY/ON key

(2)

The input selector is put into the state of MD.

(3)

The set is put into the state of the standby once

(4)

pushing the STANBY/ON key.

(5)

While hold down REC key at the standby mode, press

STANDBY/ON

CD/ MD

STANDBY/ON

STANDBY/ON key to set the power unit on.

STANDBY/ON

REC

(6)

the STANDBY/ON key.

While hold down EDIT/CLEAR NO key, press

(7)

DISPLAY key.

(8)

Press the STANDBY key to set the unit power on.

DISPLAY

The display shows TEMP ADJUST indicating that the
test mode has been selected.

3. Exiting the Test Mode

Unplug the power supply coad from the wall outlet.

4. Basic operation of each operation key

All the operations are done with MULTI JOG key, REPEAT/YES key, and EDIT/CLEAR/NO key.

EDIT/CLEAR

MULTI JOG

PUSH TO ENTER

REPEAT

YES

NO

MULTI JOG I<< >>I
MULTI JOG PUSH REPEART/YES
EDIT/CLEAR NO

Key name

Changes the parameter and test item.

Proceeds to the next step or finalizes the operation.

Returns to previous step or abouts the operation.

STANDBY/ON

EDIT/ CLEAR

NO

STANDBY/ON

Function

5. Selection of test mode

The multijog key is turned in the state of 2 - (8) and a necessary test mode is selected.
It is possible to escape from the mode to other test modes by mistake when selecting by pushing the EDIT/CLEAR/NO key.

Test mode name
TEMP ADJUST
LD POWER ADJUST

LD POWER CHECK
LOAD CHECK
SLEVEL CHECK
EFBALANCE ADJUST
FBIAS ADJUST
FBIAS CHECK
CPLAY MODE
CREC MODE
EEP MODE
POINT MODE

Display

TEMP ADJUST
LD POWER ADJUST
LD POWER CHECK
LOAD CHECK
SLEVEL CHECK
EFBALANCE ADJUST
FBIAS ADJUST
FBIAS CHECK
CPLAY MODE
CREC MODE
EEP MODE
POINT MODE

Function

Temperature compensation offset adjustment
Laser power adjustment
Confirmation of laser power.
Confirmation of lodhing operation.
Operation confirmation of object lens of pickiup
Traverse adjustment
Focus bias adjustment
Comfirmation of focus bias.
Continuous play mode
Continuous recording mode
The data memorized in non-volatile memory is rewritten.
In CREC mode and the CPLAY mode, the accessed address is changed.

23

FR-155

2. PRECAUTIONS

1. Precaution for chacking laser emmition from the laser diode.

Never look into the laser diode when checking the laser emmition durring adjustments.
During so may cause loss of your eyesight.

2. Adjustment information.

Test mode

TEMP ADJUST
LDPR ADJUST
EFBAL ADJUST

Replacement pickup Replacement PC board Replacement other parts

3. Measuring instruments and test disc.

Measuring instruments

Laser power meter :
Oscilloscope :
Digital volt meter :

LPM-8010 (manufactured by LEADER)
Band width 40 MHz or higher calibrate the probe prior to measurement.

Digital volt meter

Test disc

Standard disc for recording/playback)

4. Precautions for adjustments.

When an oscilloscope is used to monitor signal waveforms, do not connect the VC to GND inside the oscilloscope.

3. ADJUSTMENT

1. Temperature compensation offset adjustment

Save the temperature data at that time in the non-volatile memory as 25 C referance data.

[Note]

1. Usually, do not perform this adjustment.

2. Performe this adjustment in an ambient temperature of 22 C to 28 C.

3.When D101 has been replaced, perform this adjustment after the temperature of this part has become
the ambien temperature.

[Procedure]

Operation Display

1.Enter the test mode select "TEMP ADJUST"

2. Press the MULTI JOG knob.

3. Press the MULTI JOG knob, when data is
memorized.

4. Press the EDIT/CLEAR/NO keyb,when data is
not memorized.

TEMP ADJUST
TEMP= # #

TEMP # # SAVE
TEMP ADJUST

TEMP ADJUST

Present temperature data is shown.

The adjustment value of the temperature
is memorized in non-volatile memory.

2. Laser power adjustment

CN110

5. RF

4. VC

3. TE

2. IOP

1. I+3V

[Preparation]

1. Connect the digital voltmeter to between IOP and I+3V of test point CN110.

2. Install the laser power meter on the objective lens of the laser pick-up.

[Procedure]

Operation

1. Enter the test mode select "LD POWER"

2. Press the MULTI JOG knob.

3. Rotate the MULTI JOG knob so that the reading of
laser power meter becomes from 0.86mW to 0.92 mW.

4. Range of the laser power meter is set in 10mW.

5. Press the MULTI JOG knob.

6. Turn the MULTI JOG knob so that the reading of
laser power meter becomes from 6.9mW to 7.1mW.

7. Press the MULTI JOG knob.

[NOTE]

Do not continue the luminescence of 7mW of the laser power for 15 seconds or more.

Do not continue the luminescence of 7mW of the laser power for 15 seconds or more.

Digital volt meter

Display

LDPWR ADJUST
LD 0.9mW $ # #

LD SAVE $ # #
LD 7.0mW $ # #

LD SAVE $ # #
LD 0.9mW $ # #

24

To optical pick up

Laser power meter

The adjustment value of the laser power
is memorized in non-volatile memory.

The adjustment value of the laser power
is memorized in non-volatile memory.

3. Laser power check

[Procedure]

Operation Display

1. Install the laser power meter on the objective lens

2. Enter the test mode select "LDPWR CHECK"

3. Press the MULTI JOG knob.

4. Verify that the laser power meter reading
from 0.85mW to 0.91mW.

5. Range of the laser power meter is set in 10mW.

6. Press the MULTI JOG knob.

7. Verify that the the laser power meter reading is below
the specification.

[Specification]

8. Verify that the the laser digital volt meter leading is below
the specification.

[Specification]

Pick-up unit

7.0 mW 0.1mW

Optical pick-up value 10%

LD PWR CHECK
LD 0.9mW $ # #

LD 7.0mW $ # #

In this case

KMS2606

06602
A0544

FR-155

Iop = 54.4 mA

Iop = Digital volt meter reading(mV / 1 )

9. Press the EDIT/CLEAR /NO key.

LD PWR CHECK

4. EF balance adjustment

Oscilloscope

CN110

Operation

5. RF

4. VC

3. TE

2. IOP

1. I+3V

[Preparation]

1. Connect the oscilloscope to between TE and VC of test point CN110.

2. Insert the test disc.

[Procedure]

Operation

1. Enter the test mode select " EFBAL ADJUST" .

2. Press the MULTI JOG knob.

3. Rotate the MULTI JOG knob so that the readings of
the oscilloscope becomes the specified valure.

In this adjustment, waveform varies at intervals of

approximately 3%.
Adjust the waveform so that the specified value is
satisfied as possible.

4. Press the MULTI JOG knob.

EFBAL ADJUST
EFBAL # # MO-W

EFBAL = # # SAVE
EFBAL MO - W

EFBAL ADJUST

Traverse waveform

A

VC

B

Specification : A = B

Display

The adjustment value is memorized
in non-volatile memory.

25

FR-155

MD MOUNT VIEW

MD Mount (side A)

MD Mount (side B)

CN103

Loading motor

CN101

(to pickup unit)

IC301
AK4522

CN102

CN105

(to D-SW PC board)

IC152
BA5984

CN106

(to L-SW PC board)

CN104

(to MD over write head)

IC121
CXD2662R

Test point for MD adjustment

CN110

IC201
CXP740010

IC125
MSM51V4400D

D101

IC101
CXA2523AR

MESSAGES

The following table explains the messages that appear in the display.

Message

Blank Disc A recordable MD without disc or track names is

Cannot Copy An attempt was made to make a second digital

Cannot Edit You tr ied to edit a playback-only disc.

Cannot Rec You tr ied to record onto a playback-only disc.

Cannot Set

D. In Unlock The digital equipment (CD player, DAT, etc.) is not

Disc Error
Disc Full
Full You tr ied to enter a char acter over the maximum

Impossible You tr ied to edit a disc using a function not

MD Writing The unit is writing the recorded or edited contents

Mecha Error An error occurred in the unit’s internal mechanism.
Memory Full You tried to store a 26th track or a 31st channel.

inserted.

copy from a digitally dubbed MD

You tr ied to set a timer while another timer is

connected properly, or else not operating proper
The disc is abnormal (scratched or missing a TOC).
The disc is full

character capacity while naming.

available due to some reason other than the MD
system limitation.

to the MD.

Meaning

oper ating.

ly.

Message

Name Full The naming capacity of the disc or unit has

No Change The name has not been changed.
No Disc There is no disc in the unit.

No T rac k The inserted disc has a disc name but no tracks
Over In pause mode (when playing is paused),

Protected The inserted disc is record-protected.
Recording You tried to switch to another source while

Retry Error The recording attempt failed due to consecutive

Sorry You tr ied to (a) combine tracks that cannot be

Time Protect You tr ied to repeat double-speed dubbing using the
TOC Error The reading of the disc or the recording onto the

5. RF

4. VC

3. TE

2. IOP

1. I+3V

Meaning

reached its limit.

(Fast Forward) was pressed to the end of the disc.

recording or perform a CD or tuner operation that
is disabled during recording.

disturbances from scratches on the MD or from
applied vibration.

combined, (b) divide a track at its beginning, or (c)
edit a disc using a function not available due to MD

system limitations.

same CD.

disc failed.

26

.

CD MECHANISM EXPLODED VIEW (1)

FR-155

19
20

6

5

13
14
15

16

28
27
26

10

7

9

6

8

12
14
15

21

12
14

15

6

11

6

16
17

16

13
14
15

16

29

4

3

2

1

25

24

22

23

18

27

FR-155

CD MECHANISM EXPLODED VIEW(2)

(NCD-170S Pickup drive unit)

61

64

58

53

52

55

60

54

57

56

59

62

51

The mechanical parts with no part number
in the exploded views are not supplied.

Ref. No. Part No. Description

51
52
53
54
55
56
57
58
59
60
61
62
63
64

X2625-984-1
X2625-769-1
2656-908-01
2625-188-02
7621-255-15
1572-085-11
1639-678-12
1564-722-11
2627-003-02
2625-191-01
2625-477-01
2641-386-01
2625-625-01
8848-483-05

Motor chassis ass'y
Motor gear ass'y
Sled shaft
Gear A
P2x3, Screw
Leaf switch
Motor PC board
Socket
Gear B
Coil spring
Center ring
Special screw, 2*5
Reinforcement board
KSS-213C, Pickup

63

Ref. No. Part No. Description

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15

2646-290-01

2625-544-01
2625-535-01
2625-546-01

2625-537-01
1452-493-21
2625-541-02
2646-291-01
2646-288-01
2627-236-01
2627-235-01
2646-289-01

Tray
Stopper
Gear cover
Tray Gear
Chucking plate
PTPWH2.6*7,Screw
Chucking yoke
Magnet
Damper
Chucking pulley
Sub chassis
Coil spring (front)
Coil spring (back)
Washer
P2.6*10,Screw

Ref. No. Part No. Description

16
17
18
19
20
21
22
23
24
25
26
27
28
29

2627-234-01

2625-552-06
3319-501-51
2625-547-01
2625-545-04
1692-667-11
1564-721-11
1640-523-11
X2625-117-1
2625-274-02
2625-536-02
3653-387-00

Insulator
KSM-213CCM
Main chassis
PTPWH2.6*16, Screw
Drive Gear
Control cam
Leaf switch
Socket
Loading PC board
Loading motor
Middle gear
Loading pulley
LM belt
B2.6*2.5, Screw

28

CD ADJUSTMENT PROCEDURES

Preparation

Set the trimming resistors R123 to center.

Focus gain adjustment

1. Set the output of the audio oscillator to 1kHz and 1 1.5Vp-p.

2. Connect the oscilloscope and audio oscillator as shown below. (Refer to Fig-1)

3. Load the test disc YEDS-18 on the tray and play the track 2.

4. Adjust the trimming resistor R123 so the signal of channel 2 on the oscilloscope becomes 1.25 times of channel 1.

(Refer to Fig-2)

5. Remove the oscilloscope and audio oscillator.

Side view

FR-155

Fig-1

Trimming resistor

R123

Test point

P104

FE1 FE2 TE1 TE2

1

2

+

GND

Audio oscillator

43

Fig-2

Test point

P105

RF VC

2

1

GND

ch 2 GNDch 1

Oscilloscope

29

FR-155

ADJUSTMENT OF CLOCK FREQUENCY

1. Remove the top cover.

2. Connect the frequency counter to the terminal P702 on the CD & microprocessor PC board (NADG-6939)

3. While hold down CD STOP key, press STANDBY/ON key to set the test mode.
(All segments on FL tube light on and scroll the character for FL tube test.)

4. Adjust the trimmer capacitor C711 so that the reading of frequency counter becomes 5000000 10 Hz.

CD & microprocessor PC board

NADG-6933

front side

Trimmer capacitor

C711

CAL.

GND

Right side view

Frequency counter

4,999,990~5,000,010 Hz

30

Test point

P702

HANDLING OF OPTICAL PICKUP

The laser diode in the optical pickup block is so sensitive to static electricity,surge current and etc.
That the components are liable to be broken down or its reliability remarkably deteriorated.
During repair,carefully take the following precautions.

1. Work procedure

Disasembling

1 765432

Assembling

7 123456

FR-155

Remove the two machine screws and remove the bottom

1

board is detached.

bottom side

screws

Connect J001 (or LD short terminal 2) on CD connector

2

PC board (NAETC-6939) first.

NAETC-6939

bottom board

Remove FFC P101 on the CD connector PC

3

board.
Remove the screw.

4

P101

screw

Solder the LD short terminal 1 on pickup unit.

5

pickup unit

LD short terminal 2

5

FFC(P010)

J001

LD short terminal 1

Disconnect the flexible flat cable P010.

6

Replace the pickup.

7

2. Exchange picking up the MD mechanism done according to the work procedure which has been described to
method (P21) of decomposing the MD mechanism.

31

FR-155

CHASSIS EXPLODED VIEW PARTS LIST

REF. NO.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
22
23
24
25
26
27
28
29
31
32
35
36
37
38
39
40
41

42
43

PART NO.

27111174A
28325814
28325815
28191895
27130848
838430107
838130088
27100386
28141435
27130849
27130850
27130851
27160478
801433
28175263
27150453
27300750
830440089
838430068
28184786A
29110082
27170332
28191893
28184788
838930088
27212237B
28191896
28198912
28148456A
28325819
28325817A
27191133
27191134
28175266
27122756
831430088
29362706
29362707
29362285
29360687

DESCRIPTION

Front bracket
Knob, AOC
Knob, AT
Clear plate, RE
Bracket, MD
3TTB+10S(BC), Special screw
3TTB+8B, Self tapping screw
Chassis
Cushion
Bracket, PT
Bracket, CD
Bracket, U
Heat sink
3SMS8W.SW+14B(BC), Special screw
Isolated plate, A
Shield plate
Busing, cord
4TTC+8C(BC), Self tapping screw
3TTB+6B(BC), Self tapping screw
Cover, back
Tape, cross
Bottom board
Clear plate, top
Top cover
3TTB+8B(UN), Self tapping screw
Front panel
Clear plate
Facet
Tray, CD
Knob, Volume
Knob, Jog
Holder, MD
Holder, S
Isolated plate, MD
Rear panel
3TTW+8B(BC), Self tapping screw
Spec. label<DT>
Spec. label<GT>
Label caution<GT>
Label , class1

REF. NO.

Q557
, Q558
Q559
, Q560
T901

Z1
Z2
Z3
Z4
Z6
Z7
Z8
Z9
Z10
Z13

U1
U2
U3
U4
U5
U6
U7
U8
U9
U10
U12
U14

PART NO.

2203383 or
2203384
2203393 or
2203394
2301467
2301468
24650033
24611660
24605828
24604139A
24800018A
24840133
24840135
838120080
838426088
2061A12100

1A887528-1B
1A887528-1C
1A887529-1B
1A887529-1C
1A887530-1B
1A887530-1C
1A887532-1B
1A887532-1C
1A887034-1B
1A887034-1C
1A887533-1B
1A887533-1C
1A887534-1B
1A887534-1C
1A887535-1B
1A887535-1C
1A887536-1B
1A887536-1C
1A887537-1B
1A887537-1C
1A887539-1B
1A887539-1C
240135

DESCRIPTION

2SC3851-O or

*

2SC3851-Y, Transistor

*

2SA1488-O or

*

2SA1488-Y, Transistor

*

NPT-1399D <DT>
NPT-1399G, Power transformer<GT>
KMK-260BCN, MD Mechanism
Door, MD
Spring
Shaft
NCD-170S, CD mechanism
Boss, PCB
Boss, PCB3
2TTB+8P, Special screw

2.6TTB+8B(BC), Special screw
Crimp AS

NAPS-6928-1B, Power supply circuit PC board ass'y<DT>
NAPS-6928-1C, Power supply circuit PC board ass'y<GT>
NAPS-6929-1B, Primary circuit PC board ass'y<DT>
NAPS-6929-1C, Primary circuit PC board ass'y<GT>
NAAF-6930-1B, Power amplifier circuit PC board ass'y<DT>
NAAF-6930-1C, Power amplifier circuit PC board ass'y<GT>
NAETC-6932-1B, Speaker terminal PC board ass'y<DT>
NAETC-6932-1C, Speaker terminal PC board ass'y<GT>
NAETC-7034-1B, Headphone jack PC board ass'y<DT>
NAETC-7034-1C, Headphone jack PC board ass'y<GT>
NADG-6933-1B, Microprocessor & CD circuit PC board ass'y<DT>
NADG-6933-1C, Microprocessor & CD circuit PC board ass'y<GT>
NAAF-6934-1B, Acoustic circuit PC board ass'y<DT>
NAAF-6934-1C, Acoustic circuit PC board ass'y<GT>
NADIS-6935-1B, Display circuit PC board ass'y<DT>
NADIS-6935-1C, Display circuit PC board ass'y<GT>
NASW-6936-1B, Control switch PC board ass'y<DT>
NASW-6936-1C, Control switch PC board ass'y<GT>
NASW-6937-1B, Selector circuit PC board ass'y<DT>
NASW-6937-1C, Selector circuit PC board ass'y<GT>
NAETC-6939-1B, CD connector PC board ass'y<DT>
NAETC-6939-1C, CD connector PC board ass'y<GT>
TFCE1E512A, Tuner unit

F901
J22

P010C
P101C
P102C
P103C
P203C
P250C
P391C
P404C
P752C
P901

252083
252157
1F999010
2042161012
2046162012
2009990645
20022391020
2044260172
2046151512
2044230162
2044150182
2045214012
253237HIT
253294HDK

0.4A-SE-EAWK, Fuse<GT>

1.25A-UL/T-237, Fuse<DT>
Faston AS
NCFC2-161012, Flexible flat cable
NCFC6-162012, Flexible flat cable
NSAS-12P0895, Socket AS
NSAS-10P0843, Socket AS
NCFC4-260172, Flexible flat cable
NCFC6-151512, Flexible flat cable
NCFC4-230162, Flexible flat cable
NCFC4-150182, Flexible flat cable
NCFC5-214012, Flexible flat cable
AS-CEE, Power supply cord<GT>
AS-UC-2#18, Power supply cord<DT>

NOTE: THE COMPONENTS IDENTIFIED BY MARK ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE ONLY WITH PART NUMBER SPECIFIED.

CAUTION : Replacement of the transistor of mark * ,if necessary, must
be made from the same beta group (HFE) as the original type.

NOTE :

<DT> : Taiwanese Model only
<GT> : Asian Model only

32

CHASSIS EXPLODED VIEW

26

25

43

12

FR-155

42

17

41

18

P901

(DT type)

U3

7

20

36

Z1

22

7

22

6

24

26

U6

7

P250C

19

7

U4

13

Q557,Q558

F901

40

39

T901

P404C

U14

U10

7

11

18

U2

P010C

U7

15

Z13

U1

7

Z6

7

P102C

P103C

7

31

7

P203C

7

22

37

J22

U8

P391C

Z3

Z2

Z4

38

5

16

7

P901

(GT type)

Q559,Q560

33

14

10

Z7

P101C

Z9

U12

7

7

Z8

Z10

9

P752C

U5

U9

8

23

7

2

3

4

29

34

1

28

27

7

32

35

FR-155

FR-155

12

BLOCK DIAGRAM

SELECTOR CIRCUIT PC BOARD
NASW-6937

A

LINE-1

LINE-2

OUT

(REC)

B

TEPE

IN

(PLAY)

OUT

(REC)

CD-R

IN

(PLAY)

C

P202A

1

CD L

3

CD R

Q222

REC LEVEL

CONTROL

D

CONTOROL
SWITCH
PC BOARD
NASW-6936

E

S764~S771

KEY

SWITCH

S772

JOG

SWITCH

S773

REC

MODE

SW

F

Q753

REMOTE

SENSOR

1
2

3

4

7
8

2
3
4
5
6

7

8

9

10

11

Q201
AMP

CONTOROL

14

15

12

17

23

18

16

+

-

Q203

MUTE

Q221
AMP

+

-

Q223

11

12
13

FL TUBE

KEY

MUTE

9

B

10

A

to POWAR SUPPLY

14

15

DISPLAY CIRCUIT
PC BOARD NADIS-6935

Q752

FL TUBE

DRIVE

M66004F

P751A

P751B

SWITCH

ANTENNA

1
2

4
6

10
11
12
13
14
15

P404A

P201A

1
3

4

6
7

P752A

1
2

3
4
5
6
7
8

9
10
11
12
13
14
15

18
19
20
21

NAPS-6928

TUNER UNIT
TFCE1E512A

FM

AM

TUNER-R

TUNER-L
TUNER-R

R-SIGNAL

L-SIGNAL

C CLK

ST

DAT A
REC LEVEL1
REC LEVEL2

MD/REC MUT

POWER SUPPLY CIRCUIT
PC BOARD NAPS-6928

MD REC L
MD REC R

MD PLAY R
MD PLAY L

MUTE

P201B

1
3

4

6
7

MICROPROCESSOR
& CD CIRCUIT
PC BOARD NADG-6933

1
3

Q363

CD MUT

P913B

Q112

Q112

Q354

CD MUT

Q702

CD MUT

+5.6 V

P752B

P202B

CD POWER

CONTROL

35

STEREO

SD

TUNER-L
DET OUT

SIGNAL

C CLK

DAT A
PLL C

34

ACOUSTIC CIRCUIT PC BOARD NAAF-6934

P250

+3.3 V

AMUT

+5.6 V

Q112

10
13

14
15

10
11
12
13
14
15

P404B

Q920

P914A

P914B

1
2

4
6

7

1
2

4
6

1

1

OUT1
OUT2

3

7

Q171 VOLUME

MOTOR DRIVER

BUFFER

Q251

TUNER MUTE

P911A

P911B

3

5

P912A

P912B

3

5

Q372

BUFFER

Q371 BUFFER

2

+5.6 V

5

Q254

E.F

9

1

IN2

IN1

191817

191817

b

a

c

d

+5 V

Q252

c
d
e

56
57

Q253

16

16

62

41

Q441
ACOUSTIC
PRESENCE

CONTROL

CK

DAT A

ST

987654321

987654321

131114912

15

15

131114912

525148474642348045

32

31

53

b

a

e

ACOUSTIC PRESENCE

11

11

MICROPROCESSOR

+

-

Q447

CONTROL

181716

14

13

181716

14

13

86432

86432

4

1

2

545564

Q701

MPD780058GC

25

L SIGNAL

P203A

1
3
5

7

14
16

24
26

Q171

RDS DECODER

16

58

10866

24

23

29

2827

5

R441

VOLUME

M

Q443

R SIGNAL

MUTING

+B

Q449

Q448

MUTING

MD MECHANISM
KMK-260BCN

CN102

P391

BUFFER

9
10
11
15
14
16

44
22

MD REC R
MD REC L
MD PLAY R

MD PLAY L
A MUTE
CD-D IN
AUX-MD IN

MD-OUT

2

RC DATA

2

Q391

9
8

7
6
4
5

57
79

19

AF CONT

5

6

RC REQ

5

6

Q351

CD DIGITAL

SIGNAL

PROCESSOR

CXD2589Q

74

67

SHUT DOWN

JL501B

L
R

Q444

Q450

MD REQ-2

MD CLK

MD DATA-2

CN105

17

16

15

17

16

15

TRAY MOTOR

1
3

4

P370B

14
13
12
11
10
18

15

Q112

21

+5.6 V

Q103

DRIVER

6

POWER AMPLIFIER CIRCUIT
PC BOARD NAAF-6930

AF

AF

1361615

POWER AMP

POWER AMP

Q114

37

36
39

38
41
42

5

6
10
11

25
26

21
20

OUT2

3

OUT1

7

1

20
21
22
24
25
27

23

IN2
IN1

JL501A

1
3

4

6

7

Q101

RF SIGNAL

PROCESSING

SERV O AMP

CXA1992BR

26

28 3 13

Q102

15

FOCUS

/TRACKING

& SLED

30

/SPINDLE

19

MOTOR
DRIVER

LA6541D

2

1
9

5

CONT

CONT

P101B

12

11

13
16

14
15

JL551A

2

4

9

2
4
5
6
7
8

1
2
3
4
5
6

1

2

3
4
5

36

7

SPEAKER TERMINAL PC BOARD
NAETC-6932

P551

+

L

P010

12

11

13
16

14
15

P552

JL502

Q372

Q371

P381

9

2
4
5
6
7
8

-

SPEAKERS

-

R

+

SUB WOOFER
PRE OUT

1
2
3
4
5

OUT

IN

RI

REMOTE
CONTROL

12

9

11

2
4
5
6
7
8

13
16

14
15

S.STOP

M

M

M

PHONES JACK PC BOARD
NAETC-7034

P752

1
2
3
4
5

DIGITAL
OPTICAL

PD

LD

E

A

B
CD

F
FOCUSING

COIL

TRACKING
COIL

SLED MOTOR
SPINDLE MOTOR

OPEM
/CLOSE SW

TRAY
MOTOR

JL551B

2

4

P370A

1

6
7

P101A

12

9

11

2
4
5
6
7
8

13
16

14
15

P3

1
2
3
4
5
6

P4

1
2
3
4
5

8

PHONES

FR-155

A

B

12

BLOCK DIAGRAM (POWER SUPPLY SECTION)

PRIMARY CIRCUIT PC BOARD
NAPS-6929

T901

Power Transformer

P901

F901

T902

D901

RL901

RL902

P920A

Q902

JL901A

JL905A

34

P920B

to CD Microprocessor
& CD Circuit PC Board
NADG-6933

POWER AMPLIFIER
CIRCUIT PC BOARD
NAAF-6930

JL903A

D911

JL901B

POWER SUPPLY CIRCUIT PC BOARD
NAPS-6928

Q911

IN OUT IN OUT

JL903B

+B

+25.5 V

-B

-26.5 V

JL905B

AC

AC

+12 V

REGULATOR

Q913

IN OUT

-29.8 V

REGULATOR

Q912

+5 V

REGULATOR

+12 V

A+5 V

-29.8 V

5

+5 V

P505B

P914A

+5 V

P913A

5.7 V

+B

-B

7

1

5

7

P906B

to Acoustic Circuit
PC Board
NAAF-6934

to Primary Circuit
PC Board
NAPS-6929

to Microprocessor
& CD Circuit
PC Board
NADG-6933

C

D

Q901

MainPower

Control

P902B

to Microprocessor
& CD Circuit PC Board
NADG-6933

AC

D913

Q914

Power

Control

Q915

Power

Control

IN

REGULATOR

R919

IN

REGULATOR

Power Contorol

IN

REGULATOR

IN

REGULATOR

Q916

+5 V

Q917

+5 V

Q919

+5 V

Q918

+3.3 V

OUT

OUT

OUT

OUT

A+5 V

MD+5 V

MD+5 V

A+5 V

+3.3 V

Q920

Mute

P203A

11

14

20

21

22

23

A MUT

P201B

7

A MUT

6

8

to MD Mechanism

to Selector Circuit
PC Board
NASW-6936

37

38

FR-155

FR-155

ABCDEFG

H

SCHEMATIC DIAGRAM (AMPLIFIER SECTION)

1

2

3

4

5

39

40

FR-155

ABCDEF G

H

PRINTED CIRCUIT BOARD VIEW 1

U10

1

2

SELECTOR CIRCUIT PC BOARD (NASW-6937)

U3

POWER AMPLIFIER CIRCUIT PC BOARD (NAAF-6930)

3

U7

4

5

ACOUSTIC CIRCUIT PC BOARD (NAAF-6934)

U2

PRIMARY CIRCUIT PC BOARD ( NAPS-6929)

41

42

FR-155

FR-155

ABCDEFG

H

SCHEMATIC DIAGRAM(CD&MICROPROSSEOR SECTION)

1

2

3

4

5

43

44

FR-155

ABCDEFG

H

PRINTED CIRCUIT BOARD VIEW 2

1

2

U6

MICROPROCESSOR & CD CIRCUIT PC BOARD (NADG-6933)

U4

SPEAKER TERMINAL
PC BOARD (NAETC-6932)

3

U12

CD CONNECTOR
PC BOARD (NAETC-6939)

4

5

45

46

FR-155

FR-155

FR-155

ABCDEF G

H

SCHEMATIC DIAGRAM (DISPLAY &POWER SUPPLY SECTION)

1

2

3

4

5

47

48

FR-155

ABCDEFG

H

PRINTED CIRCUIT BOARD VIEW 3

U8

1

2

DISPLAY CIRCUIT PC BOARD (NADIS-6935)

U1

POWER SUPPLY CIRCUIT PC BOARD (NAPS-6928)

3

4

U9

5

CONTROL SWITCH PC BOARD (NASW-6936)

U5

HEADPHONE JACK PC BOARD (NAETC-7034)

49

50

FR-155

PRINTED CIRCUIT BOARD PARTS LIST

POWER SUPPLY CIRCUIT PC BOARD(NAPS-6928-1B/1C)
CIRCUIT NO.

Q911

Q912
Q916
Q917, Q919
Q918

Q913
Q914

Q915

Q920

D913

D914,D915

D916
D920,D951

D931,D932
D933,D934

L911~L915,L920

C918,C920
C921,C922
C925,C961
C926
C927
C928,C929
C930
C933,C935
C940
C951,C952

R911
R913
R914
R919
R951-R954

JL903B
JL905B
P201B
P203A

P505B,P906B
P911B,P912A
P913A,P914A

D913A
Q911A
Q917A
Q919A

Q917B,Q919B
D913B,Q911B

E21

PART NO.
ICs

222780125JRC or
222780125NEC
222780053
22278005ENEC
22278005DNEC
22278033ENEC

Transistors

2211455
2212853 or
2212855
221281 or
2213570
2213090 or
2213590

Diodes

22380271 or
22380022
22380260 or
22380032 or
22380035
224473004
223163 or
223205
224470562
224470623

Coils

230906

Capacitors

393344707
393381017
374723344
3504348
393341017
393324717
393322217
393321017
393341007
393342217

Resistors

4500252
453530104
443522704
443521004
442621214F

Sockets

25050271
25050268
2009990630
25052326

Plugs

25055804
25055808
25055703

Heatsink

27160271
27160211-1
27160472
27160471

Screws

82143010
82143010
Holder
27190540-1

DESCRIPTION

NJM78M12FA or
MPC78M12HF
78L05
MPC29M05HF
MPC2905HF
MPC29M33HF

2SA1015-GR
2SB1068-K or
2SB1068-U
DTC114YS or
RN1207
DTA114YS or
RN2207

D3SBA20 or
RBV402
RL1N4003 or
1SR139-100 or
GP104003E
MTZJ30D,Zener
1SS133 or
1SS270A
MTZJ5.6B,Zener
MTZJ6.2C,Zener

BL02RN2-R62

47 F, 16 V, Elect.
100 F, 50 V, Elect.

0.33 F 5 %, 50 V, Plastic
22000 F, 16 V, Elect.
100 F, 16 V, Elect.
470 F, 6.3 V, Elect.
220 F, 6.3 V, Elect.
100 F, 6.3 V, Elect.
10 F, 16 V, Elect.
220 F, 16 V, Elect.

0.1 5 %, 1/2 W, Metal
1 5 %, 1/2 W, Metal
27 5%, 1/2 W, Metal oxide
10 5%, 1/2 W, Metal
120 5%, 1 W, Metal oxide

NSCT-7P99
NSCT-4P96
NSAS-14P0865
NSCT-26P2223

NPLG-4P760
NPLG-19P764
NPLG-7P659

RAD-083
RAD-68
RAD-141
RAD-140

3P+10FN(BC)
3P+10FN(BC)

Holder

51

PRIMARY CIRCUIT PC BOARD(NAPS-6929-1B/1C)
CIRCUIT NO.

Q501-Q504
Q505-Q508
Q509,Q510
Q511,Q512
Q513,Q514
Q515,Q516
Q517,Q518
Q551,Q552
Q553,Q554

Q555,Q556

D901
D902,D903

D904
D905,D907

D906

L901

T902

C901,C902

C903
C904,C907
C905,C908
C906

R901
R906
R907,R908
R909,R914

RL901

RL902

F901A

JL901A
JL905A

P902B
P907
P920A

F901B

PART NO.
Transistors

2211733
2213284
2211455
2211455
2211255
2211455
2211255
2213284
2211654 or
2211653
2211644 or
2211643

Diodes

22380039
223163 or
223205
224470512
223163 or
223205
22380260 or
22380032 or
22380035

Coils

231287 or
231252
2301464
2301465

Capacitors

3500077 or
3300030
3500196S
374724734
393344717
393341007

Resistors

431533355
443523904
453530224
443522704

Relays

25065601 or
25065603
25065582 or
25065605

Fuse holder

25050065

Sockets

25051108
25051108

Plugs

25055369
25055675
25055146

Fuse label

29361919
29362309

DESCRIPTION

2SC1845-E
2SC1740S-R
2SA1015-GR
2SA1015-GR
2SC1815-GR
2SA1015-GR
2SC1815-GR
2SC1740S-R
2SC2235-Y or
2SC2235-O
2SA965-Y or
2SA965-O

1D4B42
1SS133 or
1SS270A
MTZJ5.1B,Zener
1SS133 or
1SS270A
RL1N4003 or
1SR139-100 or
GP104003E

NCH-3567 or
NCH-3489
NPT-1398D<DT>
NPT-1398G<GT>

DE7150F-472M or
DE1307E472M-KH
RE275V-103M

0.047 F 5 %, 50 V, Elect.
470 F, 16 V, Elect.
10 F, 16 V, Elect.

3.3 M , 1/2 W, Solid <DT>
39 5 %, 1/2 W, Metal oxide

2.2 5 %, 1/2 W, Metal
27 5 %, 1/2 W, Metal oxide <DT>

NRL-1P5A-DC9-150 or
NRL-1P5A-DC9-152
NRL-2P5A-DC18-138 or
NRL-2P5A-DC18-154

YSH403T

NSCT-4P895
NSCT-4P895

NPLG-5P352
NPLG-2P631
NPLG-2P130

T400MAL250V <GT>

1.25 A/125 V <DT>

FR-155

FR-155

POWER AMPLIFIER CIRCUIT PC BOARD(NAAF-6930-1B/1C)

CIRCUIT NO.

Q901,Q902

D501,D502

D911

C495,C496
C501,C502
C503,C504
C505,C506
C509,C510
C517,C518
C525,C526
C551,C552
C553,C554
C912,C913
C914,C915

R493,R494
R519-R522
R533,R534
R535,R536
R557,R558
R559-R562
R563,R564

JL551A
JL901B
JL903A
P501A

E23

SPEAKER TERMINAL PC BOARD(NAETC-6932-1B/1C)

Q371
Q372

L551,L552

C378,C379
C557,C558
C563

R565,R566

P381
P552

P551

JL502B
JL551B
P370A

PART NO.
Transistors

2213640

Diodes

223163 or
223205
22380271F or
22380022F

Capacitors

393361017
393342207
374721015
393344707
393322217
393341007
374721015
393341007
374724734
374722244
354763329S

Resistors

443522204
443523904
443523304
443523904
443528204
452732294F
453630824

Sockets

25051088
25050281
25051111
2009990622UL

Holder

27190608-1

Photo couplers

24120037
24120031

Coils

231176S

Capacitors

393341007
374721034
374724734

Resistors

443520564

Jacks

25045504
25045567

Terminal

25060161

Sockets

25051089
25051088
2009990621

DESCRIPTION

DTC123JS

1SS133 or
1SS270A or
D3SBA20 or
RBV402

100 F, 35 V, Elect.
22 F, 16 V, Elect.
100 pF 10 %, 50 V, Plastic
47 F, 16 V, Elect.
220 F, 6.3 V, Elect.
10 F, 16 V, Elect.
100 pF 10 %, 50 V, Plastic
10 F, 16 V, Elect.

0.047 F 5 %, 50 V, Plastic

0.22 F 5 %, 50 V, Plastic
3300 F, 35 V, Elect.

22 5 %, 1/2 W, Metal oxide
39 5 %, 1/2W, Metal oxide
33 5 %, 1/2W, Metal oxide
39 5 %, 1/2W, Metal oxide
82 5 %, 1/2W, Metal oxide

0.22 5 %, 1/2W, Metal

8.2 5 %, 1W, Metal

NSCT-4P875
NSCT-4P109
NSCT-7P898
NSAS-8P0852

UA-0 V0

TORX178B
TOTX178A

S-1.3C <GT>

10 F, 16 V, Elect.

0.01 F 5 %, 50 V, Plastic <GT>

0.047 F 5 %, 50 V, Plastic

5.6 5 %, 1/2 W, Metal <GT>

NPJ-1PDBL319
NPJ-1PDBL382

NTM-4PDML087,Speakers

NSCT-5P876
NSCT-4P875
NSAS-16P0851

MICROPROCESSOR AND CD CIRCUIT PC BOARD
(NADG-6933-1B/1C)
CIRCUIT NO.

Q101
Q102
Q103,Q181
Q351
Q371,Q391
Q372
Q701
Q705
Q791

Q110,Q112

Q111
Q114,Q355

Q353,Q354

Q702,Q704,Q707
Q703,Q706

D101,D701

D202

D702

D703,D704,D706

D741 -D743

X351
X701

L101
L351,L702
L701

PART NO.
ICs

22241499R3
22241247
22240239
22241500R3
222740007R2TO
22240935R2
22241514R3
22241210
222780565JRC

Transistors

2212853 or
2212855
2214470R2
2211504 or
2211503
2215024 or
2212794
2214540R2
2214490R2

Diodes

223234R2 or
223269R2
224490510R2 or
224550510R2
224490560R2 or
224550560R2
223234R2 or
223269R2
22380260 or
22380035 or
22380032

Crystals

3010325
3010312

Coils

231237K101R2
230921R2
231237K220R2

DESCRIPTION

CXA1992BR
LA6541D
TA7291S
CXD2589Q
TC74HCT00AF
TC7WU04FU
MPD780058GC-206-8BT
BMR-0101D
NJM78M56FA

2SB1068-K or
2SB1068-U
RN1402
2SA950-Y or
2SA950-O
2SD1468S-R or
2SD1468-R
RN2403
RN1404

1SS352 or
1SS355
UDZ5.1B or
UDZS5.1B,Zener
UDZ5.6B or
UDZS5.6B,Zener
1SS352 or
1SS355
RL1N4003 or
GP104003E or
1SR139-100

HC-49U/03 33.8688MHz
HC-49/U03 5MHz

NCH-1481
BLM21B222SPT
NCH-1477

52

CIRCUIT NO.

C101,C102
C103
C104,C105,C115
C106,C109
C107,C108,C124
C110,C111,C113
C112,C118
C117
C120
C121,C123,C125
C128,C352
C129,C144,C145
C133
C134
C135,C136,C138
C139,C716
C151,C181
C335,C336
C351
C354
C355
C364,C932
C372,C373
C469
C705,C717,C721
C707
C711
C715
C718,C793
C755
C791

R123
R217,R218

P101B
P202B
P752B
P902A
P912B
P913B,P914B
P920B

P102A
P103A
P104
P105,P702
P370B
P391A

PART NO.
Capacitors

355721019
374722234
374721034
374724744
374722224
374721044
393380337
393363307
374723334
374721034
374721034
393321017
374721024
393321027
393322217
393380107
393344707
393382207
393384797
374724734
374721524
393324717
393341007
393381007
393321017
393380227
3060016
3000078
393322217
353780479
393341017

Resistors

5210263
443524714

Sockets

25052212
2009990617
25052321
2002A391010
25051530
25051232
2002A390410

Plugs

25055150
25055149
25055045
25055038
25055446
25052323

DESCRIPTION

100 F, 6.3 V, Elect.

0.022 F 5 %, 50 V, Plastic

0.01 F 5 %, 50 V, Plastic

0.47 F 5 %, 50 V, Plastic
2200 pF 5 %, 50 V, Plastic

0.1 F 5 %, 50 V, Plastic

3.3 F, 50 V, Elect.
33 F, 3 5 V, Elect.

0.033 F 5 %, 50 V, Plastic

0.01 F 5 %, 50 V, Plastic

0.01 F 5 %, 50 V, Plastic
100 F, 6.3 V, Elect.
1000 pF 5 %, 50 V, Plastic
1000 F, 6.3 V, Elect.
220 F, 6.3 V, Elect.
1 F, 50 V, Elect.
47 F, 16 V, Elect.
22 F, 50 V, Elect.

0.47 F, 50 V, Elect.

0.047 F 5 %, 50 V, Plastic
1500 pF 5%, 50 V, Plastic
470 F, 6.3 V, Elect.
10 F, 16 V, Elect.
10 F, 50 V, Elect.
100 F, 6.3 V, Elect.

2.2 F, 50 V, Elect.
NTC-30P14, Trimming
DX-5R5L104,Super capacitor
220 F, 6.3 V, Elect.

4.7 F, 50 V, Elect.
100 F, 16 V, Elect.

N06HR20KBC,Trimming
470 5%, 1/2 W, Metal oxide

NSCT-16P2109
NSAS-6P0844
NSCT-21P2218
NSAS-10P0845
NSCT-19P1317
NSCT-7P1022
NSAS-4P0894

NPLG-6P134
NPLG-5P133
NPLG-4P33
NPLG-2P29
NPLG-8P428
NSCT-23P2220

ACOUSTIC CIRCUIT PC BOARD (NAAF-6934-1B/1C)
CIRCUIT NO.

Q441,Q442

Q447

Q251,Q252

Q253,Q448

Q254,Q449

Q450

D445

D754

C251
C254
C261,C267,C467
C441,C442
C443,C444
C447,C448
C449,C452
C453,C454
C455,C456
C457,C458
C459,C460
C461,C462
C463,C464
C465

R441

P250A
P404B

P501B
P505A,P906A
P911A

PART NO.
ICs

22240583R2 or
22241383R2
22240798

Transistors

2215024 or
2212794
2214530R2 or
2213144R2
2213145R2 or
2215410R2
2214374R2 or
2214375R2

Diodes

223234R2 or
223269R2
225386R2

Capacitors

393384797
393341007
393380337
393342207
374721015
374721015
374726834
393344707
374721534
393380227
374721544
374721015
393342217
393321017

Resistor

5104478

Sockets

25052211
25052315

Plugs

25055442
25051526
25051530

DESCRIPTION

TC51832FL-10 or
NJM4565M-D
TC9162AN

2SD1468S-R or
2SD1468-R
RN2402 or
2SC2712-Y
2SC2712-GR or
RN1441
2SA1162-Y or
2SA1162-GR

1SS352 or
1SS355
SEC1801C, LED

0.47 F, 50 V, Elect.
10 F, 16 V, Elect.

3.3 F, 50 V, Elect.
22 F, 16 V, Elect.
100 pF 10 %, 50 V, Plastic
100 pF 10 %, 50 V, Plastic

0.068 F 5 %, 50 V, Plastic
47 F, 16 V, Elect.

0.015 F 5 %, 50 V, Plastic

2.2 F, 50 V, Elect.

0.15 F 5 %, 50 V, Plastic
100 pF 10 %, 50 V, Plastic
220 F, 16 V, Elect.
100 F, 6.3 V, Elect.

N16RGL50KBT20F,Volume

NSCT-15P2108
NSCT-15P2212

NPLG-4P424
NSCT-4P1313
NSCT-19P1317

53

FR-155

DISPLAY CIRCUIT PC BOARD (NADIS-6935-1B/1C)
CIRCUIT NO.

Q751

Q752

D751
D752

D753

P751
P752A

S751-S763

CONTROL SWITCH PC BOARD (NASW-6936-1B/1C)

Q753

C760

S764-S771

S772

S773

E751

PART NO.
FL tube

212211

ICs

22240685R9

LED

225385R2
225386R2

Diodes

224490560R2 or
224550560R2

Sockets

200AE391615A
25052358

Push switchs

25035652

Remote Sensor

241335

Capacitor

355721019

Push switchs

25035652

Rotary encoder

25065507

Rotary switch

25030417

Holder

27190540-1

DESCRIPTION

BJ780GNK

M66004FP

SEC1201C
SEC1801C

UDZ5.6B or
UDZS5.6B,Zener

NSAS-16P0869
NSCT-21P2255

NPS-111-S604

SPS-444-1

100 F, 6.3 V, Elect.

NPS-111-S604

EC11B15244,Jog

NRSF-119-06SRB, Rec mode

Holder

CD CONNECTOR PC BOARD (NAETC-6939-1B/1C)
CIRCUIT NO.

P010
P101A

HEADPHONE JACK PC BOARD(NAETC-7034-1B/1C)

P753

JL502A

NOTE :

NOTE: THE COMPONENTS IDENTIFIED BY MARK ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE ONLY WITH PART NUMBER SPECIFIED.

<DT> : Taiwanese Model only
<GT> : Asian Model only

PART NO.

Sockets
25052483
25052249

Jack

25045396

Socket

25051089

DESCRIPTION

NSCT-16P2380
NSCT-16P2146

LGT1516-0101,Phones

NSCT-5P876

SELECTOR CIRCUIT PC BOARD (NASW-6937-1B/1C)

ICs

Q201-Q221
Q222
Q401

Q203,Q204

Q223,Q224

D201

C201-C204
C205,C206
C207,C208
C210,C211
C221,C222
C225,C226
C412,C413

P401

P402

P404A

P201A
P202A
P209

22240191
222840521TOS
22240864

Transistors

2215024 or
2212794
2215024 or
2212794

Diode

224490510R2 or
224550510R2

Capacitors

374722224
374721815
393344707
393341017
393380107
393380477
393341017

Jacks

25045300 or
25045571
25045300 or
25045571

Socket

25052315

Plugs

25055445
25055441
25055042

NJM4565D-D
TC4052BP
TC9273N-004

2SD1468S-R or
2SD1468-R
2SD1468S-R or
2SD1468-R

UDZ5.1B or
UDZS5.1B,Zener

2200 pF 5 %, 50 V, Plastic
180 pF 5 %, 50 V, Plastic
47 F, 16 V, Elect.
100 F, 16 V, Elect.
1 F, 50 V, Elect.

4.7 F, 50 V, Elect.
100 F, 16 V, Elect.

NPJ-6PDBL159 or
NPJ-6PDRW386
NPJ-6PDBL159 or
NPJ-6PDRW386

NSCT-15P2212

NPLG-7P427
NPLG-3P423
NPLG-3P32

54

FR-155

FR-155

FR-155

C

D

E

F

A

B

12

WIRING VIEW

OUT

(REC)

IN

(PLAY)

OUT

(REC)

IN

(PLAY)

L
R

L
R

L
R
L

R

L
R

L
R

U8

P751A

U2

PRIMARY CIRCUIT

P907

T901

NPT-1399

Power

Transformer

T902

NPT-1398

Power

Transformer

LINE-1

LINE-2

TEPE

CD-R

U9 CONTROL

SWITCH

PC BOARD

(NASW-6936)

P751B

K1

ROTEN2

K2

ROTEN1

ECO5 V

GND

REMIN

ROT SW

AC INPUT

SELECTOR CIRCUIT

U10

PC BOARD

(NASW-6937)

P404A

TUNER-L
TUNER-R

GND

R

GND

L

GND

-B

+B

C CLK

FCE/VCE

DAT A
REC-LEVEL1
REC-LEVEL2

MD/REC MUT

P201A

L OUT

GND

R OUT

R IN

GND

L IN

A MUT

P202A

CD/L-IN

GND

CD/R-IN

DISPLAY CIRCUIT

PC BOARD

(NADIS-6935)

FL TUBE

K1
ROTEN2
K2
ROTEN1
ECO5 V
GND
REMIN
ROT SW

FL +5 V

GND
GND

FL RESET

FL CE

REMIN

FL CLK

FL DATA

ECO LED

+5 V

ROTEN1

ROTEN2

ROT SW

AP LED
ECO5 V

P752A

F1
F2

-VP

KO

K1

K2

PC BOARD

(NAPS-6929)

P920A

F1
F2

P902A

RC POWER
AC POWER

P OUT

+B

GND

JL901A

AMP-AC-1

GND
GND

AMP-AC2

JL905A

MD/CD-AC2
MD/CD-AC1

GND

-B AC

FM
75

ANTENNA

AM

U14

TUNER UNIT

SD

STEREO

P202B

CD/L-IN
SIG
CD/R-IN

MICROPROCESSOR

P752B

F1
F2

-VP
FL +5 V
GND
GND
FL RESET
FL CE
REMIN
FL CLK
FL DATA
KO
ECO LED
+5 V
K1
ROTEN1
K2
ROTEN2
ROT SW
AP LED
ECO5 V

P920B

RC DATA

F1
F2

SHUT DOWN

MD REQ-2

MD DATA-2

P902B

RC POWER
AC POWER
P OUT
+B
GND

34

+5 V

+12 V

GND P

SIGNAL

DET OUT

TUNER-L

TUNER-R

+5 V

+5 V

GND

P370B

CD CIRCUIT

PC BOARD

(NADG-6933)

RCREQ

MD CLK

GND

DATA-OUT

U6

&

P391

GND

DATA-IN

RI

C CLK

GND

DAT A

PLLCE

P912B

DET OUT

SIGNAL

RC POWER

SEL-MUT

REC-MUT

FCE/VCE

TU MUT

STEREO

PLL CE

VOL/UP

VOL/DOWN

REC VOL2
REC VOL1

DSP VCC

MD RESET

MD/D-IN

CD/D-OUT

D-OUT

P101B

VC

VCE

E
D
A
B
C

F

LD
GND
GND

PD
FC+
TR+

TR-

FC-

CLOSE SW

GND

OPEN SW

LD+

GND

S STOP

SL+

SP+

-12 V

C CLK

DAT A

SD

P913B

GND
GND
GND

+5.6 V

-VP

P914B

GND

GND

GND

+5 V

P103

LD-

SL-

SP-

P404B

P102

TUNER-L
TUNER-R
GND
R
GND
L
GND

-B
+B
C CLK
FCE/VCE
DAT A
REC-LEVEL1
REC-LEVEL2
MD/REC MUT

P912A

DET OUT
SIGNAL
RC POWER

-12 V
SEL-MUT
REC-MUT
FCE/VCE
TU MUT

C CLK
DAT A
STEREO
SD
PLL CE
VOL/UP
VOL/DOWN
REC VOL2
REC VOL1

P913A

(+5 V)
GND
GND
GND
+5.6 V
MD RESET

-VP

P914A

MD/D-OUT
GND
CD/D-IN
GND
D-IN
GND
+5 V

P101A

VC
VCE
E
D
A
B
C
F
LD
GND
GND
PD
FC+
TR+
TR­FC-

P250

P201B

L IN
GND
R IN
R OUT
GND
L OUT
A MUT

P010

VC

VCE

GND

LD

GND

PD

FC+

TR+

TR-

FC-

STEREO
SD

TUNER-R
GND
TUNER-L
DET OUT
+12 V
+5 V
SIGNAL
GND

C CLK
DAT A
PLLCE

P911A

CD CONNECTOR

PC BOARD

(NAETC-6939)

E
D
A

B

C

F

ACOUSTIC CIRCUIT

PC BOARD(NAAF-6934)

REC-LEVEL1

REC-LEVEL2

VOL/DOWN

VOL/UP

PLL CESDSTEREO

DAT A

C CLK

GND

TU MUT

SD

GND

P911B

REC-LEVEL1

REC-LEVEL2

U12

VOL/DOWN

PLL CE

VOL/UP

VC
VCE
E
D
A
B
C
F
GND
LD
GND
PD
FC+
TR+
TR­FC-

DAT A

C CLK

STEREO

TU MUT

CD MECHA

-NISM

(NCD-170S)

GND
S STOP
SL­SL+
SP­SP+

U7

FCE/VCE

MD/REC MUT

SEL/MUT-BRC POWER

FCE/VCE

SEL/MUT

MD/REC MUT

CLOSE SW

GND

5

JL501B

L-OUT

GND

R-OUT

AF-CONT

GND

GND

+12V

SIGNAL

DET OUT

GND

+B

GND

-B

P505A

-B
GND

SIGNAL

DET OUT

RC POWER

+B

P505B

GND

-B

U1

POWER SUPPLY CIRCUIT

PC BOARD(NAPS-6928)

MD/CD-AC2

MD/CD-AC1

GND

-B AC

JL905B

OPEN SW

LD-

LD+

P906A

GND

P906B

CN105

GND

+5V

+12V

+5V

P203A

R OUT

GND

L OUT

CN102

L IN

R IN

GND

RC DATA

RCREQ
SHUT DOWN

MD REQ-2
MD CLK
MD DATA-2

6

POWER AMPLIFIER
CIRCUIT PC BOARD

JL501A

L-IN
GND
R-IN
AF-CONT

JL901B

GND

R IN

A5 V

L IN

A5 V

GND

GND

MD5 V

A5 V

A5 V

GND

GND

GND

L OUT

R OUT

MD5 V

MD MECHANISM

(KMK-260BCN)

U3

(NAAF-6930)

AMP-AC-1

GND

GND

AMP-AC2

GND

JL903A

JL903B

GND

MD5 V

PWR CNT

A MUTE

MD RST

CD-DIN

GND

GND

H GND

H+5 V

GND

GND

GND

CD-DIN

MD RST

H+5 V

MD5 V

PWR CNT

A MUTE

L-OUT

R-OUT

GND

GND+BGND

GND

GND+BGND

M+5 V

M+5 V

M+5 V

M+5 V

JL551A

GND

GND

GND

GND

3.3 V

AUX-D OUT

3.3 V

AUX-D IN

-B

-B

D-IN

D-OUT

7

SPEAKER TERMINAL

JL551B

P370A

JL502B

HEADPHONE

(NAETC-7034)

U4

PC BOARD

(NAETC-6932)

GND
L-OUT
GND
R-OUT

DATA-OUT
GND
+5 V
+5 V
GND
DATA-IN
RI
GND

L IN
L OUT
GND
R OUT
R IN

U5

PC BOARD

JL502A

R OUT
R IN
GND
L IN
L OUT

L

SPEAKERS
R

SUB WOOFER
PRE OUT

IN

DIGITAL
OPTICAL

OUT

RI

REMOTE
CONTROL

PHONES

8

55

56

P A CKING VIEW

FR-155

5

8

2

13

2

14

15

16

19

1

3

4

5

3

5

17

8

1

6

12

2

2

PACKING VIEW PARTS LIST

Ref. No. Part No. Description

1
2
3
4
5
6
7

7

11

8
11
12
13
14
15
16
17

19

29091932A
29091933A
29091934A
29095864
29110149
29110141
282301
29100097-1A
29362709
29053623
24140434
3010054
232140
292116
29342936
29342937
29355340
25065462

Pad
Pad, S
Pad, H
Sheet, 800*600
Tape
T ape, W50L100
Staple
Polybag, 350*250
Label, EAN
Carton
RC-434S, Remote controller
Battery
NMA-3057, AM loop antenna
FM antenna
Instruction manual E
Instruction manual T
Instruction sheet E
YAE21-0237, FM Adapter

57

FR-155

Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: [phone] Fax: [phone]

ONKYO U.S.A. CORPORATION

18 Park Way, Upper Saddle River, NJ 07458, U.S.A.
Tel: [phone] Fax: [phone] E-mail: [e-mail]

ONKYO EUROPE ELECTRONICS GmbH

Industriestrasse 20, 82110 Germering, GERMANY
Tel: [phone] Fax: [phone] E-mail: [e-mail]

ONKYO CHINA LIMITED

Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung,
N.T., HONG KONG Tel: [phone] Fax: [phone]

HOMEPAGE

http://www.onkyo.co.jp/

PN 0M 3662 N102 Printed in Japan