Sony WX-C55 Manual de usuario

Other Specifications

CD player section

Signal-to-noise ratio 94 dB

Frequency response 5 – 20,000 Hz

Wow and flutter Below measurable limit

Laser Diode Properties

Material GaAlAs

Wavelength 780 nm

Emission Duration Continuous

Laser output power Less than 44.6 µW*

*This output is the value measured at a distance

of 200 mm from the objective lens surface on

the Optical Pick-up Block.

Cassette player section

Tape track 4-track 2-channel stereo

Wow and flutter 0.08 % (WRMS)

Frequency response 30 – 20,000 Hz

Signal-to-noise ratio

Cassette type Dolby B NR Dolby NR off

TYPE II, IV 67 dB 58 dB

TYPE I 64 dB 55 dB

Model Name Using Similar Mechanism NEW

CD Drive Mechanism Type MG-378X-121

Optical Pick-up Name KSS-521A

Model Name Using Similar Mechanism XR-C8820

Tape Transport Mechanism Type MG-25E-136

SERVICE MANUAL

US Model

E Model

WX-C55

CHANGER CONTROL AUDIO MASTER

MICROFILM

SPECIFICATIONS

– Continued on next page –

Section

DolbynoisereductionmanufacturedunderlicensefromDolbyLabo-

ratories Licensing Corporation.

“DOLBY” and the double-D symbol aare trademarks of Dolby

Laboratories Licensing Corporation.

AUDIO POWER SPECIFICATIONS (US Model)

POWER OUTPUTAND TOTAL HARMONIC DISTORTION

13 watts per channel minimum continuous average power into

4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more

than 1% total harmonic distortion.

Tuner section

Tuning range US model:

87.5 – 107.9 MHz

E model:

FM tuning interval:

50 kHz/200 kHz switchable

87.5 – 108.0 MHz

(at 50 kHz step)

87.5 – 107.9 MHz

(at 200 kHz step)

Antenna terminal External antenna connector

Intermediate frequency 10.7 MHz

Usable sensitivity 9 dBf

Selectivity 75 dB at 400 kHz

Signal-to-noise ratio 65 dB (stereo),

68 dB (mono)

Harmonic distortion at 1 kHz

0.7% (stereo),

0.4% (mono)

Separation 35 dB at 1 kHz

Frequency response 30 – 15,000 Hz

SECTION 6

DIAGRAMS

• IC500 µPD78058GC-B51-8BT (SYSTEM CONTROL)

Pin No. Pin Name I/O Pin Description

1 VSM I FM, AM common signal meter A/D conversion input

2 NIL I Not used. (Connect to ground in this set.)

3 SD-IN I Station detecter input (“H” : with SD)

4 AVSS — Analog ground

5 FM-ST I FM stereo input pin (“L” : stereo)

6 AM-ST I AM stereo input pin (“L” : stereo)

7 AVREF — Reference power supply for D/A conversion.

8 PLL-SI I PLL serial data input

9 PLL-SO O PLL serial data output

10 PLL-CKO O PLL serial clock output

11 PLL-CE O PLL serial chip enable output

12 AMS I Music with/without detection input at AMS. (“L” : with music, “H” : without music)

13 PLAY/AMS O Tape AMS control output

14 F/R O FWD/REV detection output (“H” : FWD, “L” : REV)

15 MTL O Metal control output (“H” : metal)

16 BUS-SI I Uni-link serial interface data input

17 BUS-SO O Uni-link serial interface data output

18 BUS-CKI I Uni-link serial interface clock input

19 BUS-CKO O Uni-link serial interface clock output

20 TAPE-MUTE O Tape mute control output

21 DOLON I/O Dolby control input/output

22 EQ-CE O Equalizer serial chip enable output (Not used in this set.)

23 EQ-CLK O Equalizer serial clock output (Not used in this set.)

24 DATA O Serial data output

25 VOL-CLK O Electronic volume serial clock output

26 VOL-CE O Electronic volume serial chip enable output

27 MUT O System mute control output

28 AMP-ON O Power amplifier power supply control output

29 AUX-MUT O AUX mute control output

30 C/B I/O Dolby B/C select control output (Not used in this set.)

31 PWR-SEL I Power select initial setting input

32 TEST I Test mode setting input

33 VSS — Ground

34 NIL I Not used. (Connect to ground in this set.)

35 POWER-ON O System power supply control output

36 TUN-ON O Tuner power supply control output

37 FM-ON O FM power supply control output

38 AM-ON O AM power supply control output (Not used in this set.)

39 NIL I Not used. (Connect to ground in this set.)

40 CM-ON O Capstan motor control output

41 TP-ON O Tape power supply control output

42 LM-EJ O Loading motor control output (Eject direction)

43 LM-LOD O Loading motor control output (Loading direction)

44, 45 POS1, 0 I Position signal detection input 1, 0

46 BEEP O Buzzer control output

47, 48 POS2, 3 I Position signal detection input 2, 3

49 REL I Reel stand rotation detection input

50 RC-IN1 I Rotary commanderA/D conversion input 1

51 SUB-CE O Sub serial chip enable output (Not used in this set.)

52 SUB-DATA O Sub serial data output (Not used in this set.)

53 SUB-CLK O Sub serial clock output (Not used in this set.)

6-1. IC PIN DESCRIPTIONS

Pin No. Pin Name I/O Pin Description

54 SYS-RST O System reset signal output

55 BUS-ON O Bus ON control output

56, 57 RE1, 0 I Rotary encoder input 1, 0

58 AD-ON O Power supply output for A/D conversion.

59 RAMBU I RAM reset detection input

60 RESET — Reset input

61 SIRCS I Remote control input (Not used in this set.)

62 BU-IN I Backup power detection input

63 NIL — Not used (Connect to ground in this set.)

64 ACC-IN I Accessory power supply detection input

65 DIMMER I Dimmer control input

66 TEL-MUTE I Telephone mute control input

67 KEY-ACK I Key input acknowledge

68 VDD — µ-con power supply

69 X2 O Main ceramic oscillator output (5 MHz)

70 X1 I Main ceramic oscillator input (5 MHz)

71 IC — Connect to ground in this set.

72 XT2 O Sub crystal oscillator output (32.768 kHz)

73 XT1 I Sub crystal oscillator input (32.768 kHz)

74 AVDD — Power supply for A/D conversion.

75 AVREF — Reference power supply for A/D conversion.

76, 77 KEY-IN0, 1 I Key input 0, 1

78 KEY-IN2 I Key input 2 (Not used in this set.)

79 RC-IN0 I Rotary commanderA/D conversion input 0

80 DSTSEL I Initial setting input of destination. (“H” : US model, “L” : E model)

• IC801 µPD78054GC-A32-8BT (CD SYSTEM CONTROL)

Pin No. Pin Name I/O Pin Description

1 LEDCLK — Not used in this set.

2 LEDCKO — Not used in this set.

3 LEDSO — Not used in this set.

4 AVSS — Analog ground

5 FL-CE0 O Display driver chip select output 0

6 FL-CE1 O Display driver chip select output 1 (Not used in this set.)

7 AVREF1 — Reference power supply for D/A conversion.

8 FL-RST O Display driver reset output (Not used in this set.)

9 FL-SO O Display driver data output

10 FL-CKO O Display driver clock output

11 SRDT — Not used in this set.

12 NCO — Not used.

13 SCLK — Not used in this set.

14 FL-BLK O Display driver blank control output

15 NIL — Not used. (Connect to ground in this set.)

16 UNISI I Uni-link serial interface data input

17 UNISO O Uni-link serial interface data output

18 UNICKI I Uni-link serial interface clock input

19 LINKOFF O Link off output

20 ILLON O Illumination power supply control output

21 CMDON O CD mechanism power supply control output

22 CD-ON O CD power supply control output

23 SP-SEL O Signal (L/R channel) select control signal output to spectrum analyzer control IC.

24 SP-C O Frequency select control signal output to spectrum analyzer control IC.

25 SP-B O Frequency select control signal output to spectrum analyzer control IC.

26 SP-A O Frequency select control signal output to spectrum analyzer control IC.

27 CDMUT O CD mute control output

28 EMPH-O O Emphasis control output

29 CD-RST O CD signal process IC reset output

30 XMODE — Not used in this set.

31, 32 NIL — Not used. (Connect to ground in this set.)

33 VSS — Ground

34 TBTGSEL I CD tracking balance, tracking gain auto adjustment select input.

35 – 39 NIL — Not used. (Connect to ground in this set.)

40 GFS I GFS signal detection input

41 SQ-SI I SUB Q data input

42 SQ-CKO O SUB Q clock output

43 NIL — Not used. (Connect to ground in this set.)

44 CD-SO O CD signal process serial data output

45 CD-LAT O CD signal process latch output

46 CD-CKO O CD signal process serial clock output

47 PH2 I 8/12 cm disc detection input

48 F-OK I Focus signal detection input

49 LD-ON O Laser on/off select control output

50 D-SW I Down switch detection input

51 PH1 I Disc insert detection input

52 L-SW I Sled limit switch input

53 LM-LOD O Loading motor control output (Loading direction)

54 LM-EJ O Loading motor control output (Eject direction)

55 PH3 I Disc detect sensor input

56 CTL1 O Driver IC control output

57 NCO — Not used.

Pin No. Pin Name I/O Pin Description

58 EESIO O Not used in this set.

59 EECKO O Not used in this set.

60 RESET — Reset input

61 SCOR I SCOR signal detection input

62 CNIN I Track jump count input

63 SELF-SW I Disc self store detection input

64 SENS I SENS signal detection input

65 DQSY — Not used in this set.

66 BUIN I Backup power supply detection input

67 BUSON I Bus on control input

68 VDD — µ-con power supply

69 X2 O Main ceramic oscillator output (5 MHz)

70 X1 I Main ceramic oscillator input (5 MHz)

71 IC — Not used. (Not used in this set.)

72 XT2 O Sub crystal oscillator output (Not used in this set.)

73 XT1 I Sub crystal oscillator input (Connect to ground in this set.)

74 AVDD — Power supply for A/D conversion.

75 AVREF — Reference power supply for A/D conversion.

76 NIL — Not used. (Connect to ground in this set.)

77 SP-IN I Spectrum analyzer control signal input from spectrum analyzer control IC.

78 TSTIN0 I LOAD/EJECT prohibition setting input

79 NCO — Not used.

80 LEDOE — Not used in this set.

34 34

WX-C55

6-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (1/2) — • Refer to page 35 for Waveforms and page 48 for IC Block Diagrams.

Note:

• Voltage and waveforms are dc with respect to ground

under no-signal conditions.

no mark : CD PLAY

∗: Impossible to measure

(Page 35)

35 35

WX-C55

6-8. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (2/2) — • Refer to page 48 for IC Block Diagrams.

Note:

• Voltage and waveforms are dc with respect to ground

under no-signal conditions.

no mark : CD PLAY

(Page 34)

(Page 37)

• Waveforms

(MODE : CD PLAY)

IC1 3(MDP)

2.6Vp-p

7.6µsec

IC1 @º (LRCK)

5.8Vp-p

22.7µsec

IC1 @™ (BCK)

5.7Vp-p

474nsec

16.89MHz

IC1 #¢ (XTAI)

3.2Vp-p

Approx. 200mVp-p

IC2 $™ (TEO)

Approx. 620mVp-p

IC2 1(FEO)

IC2 #¡ (RFO)

1.2Vp-p

37 37

WX-C55

6-12. SCHEMATIC DIAGRAM — CD SECTION — • Refer to page 51 for IC Block Diagrams.

Note:

• Voltage is dc with respect to ground under no-signal

condition.

no mark : CD PLAY

(Page 41)

(Page 46)

(Page 41)

(Page 35)

(Page 36)

40 40

WX-C55

6-14. SCHEMATIC DIAGRAM — MAIN SECTION (1/4) — • Refer to page 50 for IC Block Diagrams.

Note:

• Voltage is dc with respect to ground under no-signal

condition.

no mark : FM

():AM

(Page 41)

(Page 42)

41 41

WX-C55

6-15. SCHEMATIC DIAGRAM — MAIN SECTION (2/4) —

Note:

• Voltage is dc with respect to ground under no-signal

(detuned) condition.

no mark : FM

(Page 43)

(Page 42)

(Page 40)

(Page 37)

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