Sony HTC-NX1 User manual

MICROFILM

SERVICE MANUAL

Section

Tape Deck

Section

Model Name Using Similar Mechanism HCD-MD555

CD Mechanism Type CDM53D-K1BD33

Base Unit Name Type BU-K1BD33

Optical Pick-up Name KSM-213BFN-C2NP

Model Name Using Similar Mechanism HCD-GRX7

Tape Transport Mechanism Type TCM-230AWR2

MINI Hi-Fi COMPONENT SYSTEM

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

Tourist Model

SPECIFICATIONS

HTC-NX1

Dolby noise reduction manufactured under license

from Dolby Laboratories Licensing Corporation.

“DOLBY” and the double-D symbol aare trade-

marks of Dolby Laboratories Licensing Corporation.

HTC-NX1 is the CD player and Tape

Deck section in MHC-NX1/NX3AV.

2121

HTC-NX1

7-3. SCHEMATIC DIAGRAM – BD Board – • See page 32 for Waveforms. •See page 32 for IC Block Diagrams.

The components identified by mark 0or dotted

line with mark 0are critical for safety.

Replaceonlywithpart numberspecified.

Lescomposants identifiésparune marque0sont

critiques pourla sécurité. Neles remplacerque

par une pièce portant le numéro spécifié.

• Voltages and waveforms are dc with respect to ground

under no-signal conditions.

no mark :CD PLAY

(Page 29)

2323

HTC-NX1

7-5. SCHEMATIC DIAGRAM – CD MOTOR/SENSOR Section – • See page 33 for IC Block Diagram.

• Voltages are dc with respect to ground under no-signal

conditions.

no mark :CD PLAY

(Page 29)

2525

HTC-NX1

7-7. SCHEMATIC DIAGRAM – AUDIO Board – • See page 33 for IC Block Diagram.

• Voltages are dc with respect to ground under no-signal

conditions.

no mark :TAPE PLAYBACK

( ) : RECORD

PB LEVEL (L)

(DECK A)

PB LEVEL (R)

(DECK A)

PB LEVEL (L)

(DECK B)

PB LEVEL (R)

(DECK B)

PB EQ AMP

(DECK A)

PB EQ AMP

(DECK B)

SWITCHING

REC BIAS (L)

(DECK B)

REC BIAS (R)

(DECK B)

BIAS OSC

REC BIAS

-6.8

(PLAYBACK)

A +7.5V

APB–LCH

APB–RCH

AGND

BPB–LCH

BPB–RCH

A –7.5V

–VBIAS (–7.5V)

+VBIAS (+7.5V)

B–REC–RCH

B–REC–LCH

TC–HEAD–GND

The components identified by mark 0or dotted

line with mark 0are critical for safety.

Replaceonly withpart numberspecified.

Lescomposants identifiésparune marque0sont

critiques pourla sécurité. Neles remplacerque

par une pièce portant le numéro spécifié.

(Page 28)

2626

HTC-NX1

7-8. PRINTED WIRING BOARD – LEAF SW Board – • See page 19 for Circuit Boards Location.

7-9. SCHEMATIC DIAGRAM – LEAF SW Board –

• Voltages are dc with respect to ground under no-signal

conditions.

no mark :TAPE PLAYBACK

( ) : RECORD

∗: Impossible to measure

DECK A

PLUNGER

DECK B

PLUNGER

(DECK A PLAY)

(DECK A HALF) (DECK A 120/70) (DECK A REC)

(DECK B HALF)

(DECK B PLAY)

(DECK B 120/70)

(DECK B REC)

()

DECK B

PLUNGER

DECK A

PLUNGER

(CAPSTAN)

(DECK A 120/70)

(DECK A HALF)

(DECK A REC)

(DECK B HALF)

(DECK B REC)

(DECK B 120/70)

ROTATION DETECT SENSOR

(DECK A)

ROTATION DETECT

SENSOR (DECK B)

(DECK A PLAY) (DECK B PLAY)

CONTROL SWITCH

CAPM–

CAPM+

CAPM–H/L

A–TRGM

TRGM–GND

B–TRGM

A–SHUT

DGND

A–HALF

+5V

A–120/70

B–SHUT

A PLAY

B–HALF / REC–A / REC–B

B–120/70

B PALY

(Page 27)

(Page 28)

2828

HTC-NX1

7-11. SCHEMATIC DIAGRAM – MAIN Board (1/2) –

The components identified by mark 0 or dotted

line with mark 0 are critical for safety.

Replaceonly withpart numberspecified.

Lescomposants identifiésparune marque0sont

critiques pourla sécurité. Neles remplacerque

par une pièce portant le numéro spécifié.

• Voltages are dc with respect to ground under no-signal

conditions.

no mark :CD PLAY

( ) :TAPE PLAYBACK (DECK A)

[ ] :TAPE PLAYBACK (DECK B)

〈〈 〉〉 : RECORD

(Page 25)

(Page 26)

(Page 29)

2929

HTC-NX1

7-12. SCHEMATIC DIAGRAM – MAIN Board (2/2) – • See page 32 forWaveform.

[ ] :TAPE PLAYBACK (DECK B)

〈〈 〉〉 : RECORD

∗: Impossible to measure

• Voltages and waveforms are dc with respect to ground

under no-signal conditions.

no mark :CD PLAY

( ) :TAPE PLAYBACK (DECK A)

(Page 23)

(Page 21)

(Page 28)

(Page 31)

3131

HTC-NX1

7-14. SCHEMATIC DIAGRAM – PANEL Section –

• Voltages are dc with respect to ground under no-signal

conditions.

no mark :CD PLAY

(Page 29)

3232

RFDC

IGEN

AVSS0

ADIO

AVDD0

CLTV

FILO

AVSS3

VSS

AVDD3

DOUT

VDD

PCO

FILI

ASYO

ASYI

RFAC

BIAS

SSTP

DFCT

MIRR

MDP

LOCK

FOK

SFDR

VSS

TEST

FRDR

COUT

XTSL

TES1

SRDR

TFDR

FFDR

TRDR

XRST

SQCK

SQSO

60 53

59 57

58 51

52 48

50 47 44

46 43 41

XLAT

CLOK

SENS

SYSM

DATA

XUGF

XPCK

GFS

C2PO

WFCK

10 11 12 13 14 15 16 17 18 19 20

SPOA

ATSK

SCLK

VDD

SCOR

SPOB

XLON

XTAI

XVDD

EMPH

AVDD1

AOUT1

AIN1

XTAO

XVSS

AIN2

AOUT2

AVDD2

RMUT

LOUT2

LOUT1

BCK

LRCK

PCMD

LMUT

AVSS1

AVSS2

CPU

INTERFACE

SERVO AUTO

SEQUENCER

SERIAL IN

INTERFACE

OVER SAMPLING

DIGITAL FILTER

3rd ORDER

NOISE SHAPER

PWM PWM

EFM

DEMODULATOR

TIMING

LOGIC

DIGITAL

OUT

D/A

INTERFACE

DIGITAL

PLL

ASYMMETRY

CORRECTION

CLOCK

GENERATOR

MIRR, DFCT,

FOK

DETECTOR

DIGITAL

CLV

SUBCODE

PROCESSOR

SERVO

INTERFACE

SERVO DSP

FOCUS

SERVO

TRACKING

SERVO

SLED

SERVO

PWM GENERATOR

FOCUS PWM

GENERATOR

TRACKING

PWM GENERATOR

SLED PWM

GENERATOR

16K

RAM

ERROR

CORRECTOR

INTERNAL BUS

A/D

CONVERTER

OPERATIONAL

AMPLIFIER

ANALOG SWITCH

• Waveforms

– BD Board –

1IC103 qh (RF O) (CD Play Mode)

Approx.

1.2 Vp-p

2IC101 ra (TE) (CD Play Mode)

Approx.

180 mVp-p

3IC101 el (FE) (CD Play Mode)

Approx.

280 mVp-p

4IC101 qj (XPCK)

5 Vp-p

230 ns

5IC101 yh (XTAI)

3 Vp-p

16.9344 MHz

6IC101 qg (WFCK)

5 Vp-p

138

1IC101 qd (XOUT)

1.9 Vp-p

16 MHz

– MAIN Board –

• IC Block Diagrams

– BD Board –

IC101 CXD2587Q

IC103 CXA2568M-T6

APC PD AMP

APC LD AMP

RF SUMMING AMP RF EQ AMP

FOCUS ERROR AMP

TRACKING

ERROR AMP

VC BUFFER

VCC

50µA

VEE

VC VC VC

VCC

VEE

VCC

VEE

VCC

LC/PD

LD ON

HOLD SW

AGC CONT

RFTC

RF I

RF O

RFE

RF BOT

HOLD

AGC VTH

VEE

–

VCC

–

REG

CONTROL

INPUT

AMP.

INPUT

AMP.

POWER AMP.

VCC

OUT1

IN2

REFERENCE

GND

IN1

OUT2

VCC

1234567 8 9

INVERTER

COMPARATER

SW R1 GND SW P1 CONT GND VCC SW P2 GND SW R2

– CLAMP MOTOR/LOAD MOTOR Board –

IC701 M54641L (CLAMP MOTOR Board)

IC702 M54641L (LOAD MOTOR Board)

– AUDIO Board –

IC602 µPC1330HA

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