Zenith XBV 443, Service Manual

Page: 58 / 108

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BLOCK DIAGRAMS
1. DVD OVERALL BLOCK DIAGRAM
M
M
DISC
Spindle Motor
Loading Motor
OPEN S/W
CLOSE S/W
LIMIT S/W
DECK MECHANISM
Video Out
2ch Audio Out
VF+
AC IN
POWER BOARD
VF-
-27V
+8V +5.3VA +5V +3.3V-M1
IC401
PCM1742KE
AUDIO 2ch DAC
IC402 OP AMP M64580
R
VIDEO
Y
Pr
POWER CONTROL
IC201 L6560
Motor Driver
PICK UP
IC202
STL6317
CD / DVD DSP
Pb
IC501
VCR U-com
FL DISPLAY
KEY Input
+12_A
DSP/MPEG(1.8 Regulator)
X501 32.768KHz X-TAL
Memory Interface Diagnostics Controller
Frontend Interface
IC602 SDRAM 64Mbit 16bit x 4
Micro Processor
Video Encoder & DAC
Super Jack
IC609 MM1623 VIDEO FILTER / BUFFER
IC603 8M Flash Memory
X201 20 MHz X-TAL
ADAC-ENA_2CH DAC_PCMOUT3 ADAC_DATA ADAC_CLOCK DAC_RST DAC_SCLK DAC_LRCK DAC_PCM_CLK
RC501
Remocon Receiver
Remote Controller
Power-Control
+3.3V
MPEG(1.8 Regulator) RF IC/Pick-up/Motor Drive/MD/Audio ADC/DAC Front U-com/Buffer IC/Reset IC
Audio OP AMP Motor Drive IC VCR U-com VCR U-com
IC604 74HCT244 Level Shift
RF Signal A/B/C/D/E/F
LM+, LM-
M
Feeding Motor
FM+, FM-
FACT TACT Actuator mute Spindle on Vref
PC(O)
Loading Control
DVD_LD, CD_LD
F+/F-/T+/T-
SPM+, SPM-
PSEL0, PSEL1
IC203
NJM3414
FG Generation
Block
Audio DSP
IC601
STI5589
MPEG DECODER
X601 27 MHz X-TAL
DSP_RST IRQ2 IIC_DATA IIC_CLK RS_ECCB_START RS_DATA RS_DVALID RS_BCLK RS_ERROR_EN RS_ERROR
CVBS C (for S-Video) Y (for S-Video) Y/G (Component Video) Pb(B) (Component Video) Pr(R) (Component Video)
SMI_CS[0:1] SMI_RAS SMI_CAS SMI_WE SMI_DQML SMI_DQMU SMI_CLKIN SMI_CLKOUT SMI_DATA[0:15] SMI_ADR[0:13]
Top BOOT
CPU_ADR[1:21] CPU_DATA[0:15] FLASH_CE FLASH_OE WE
L
Digital Audio Out
Coxial
Optical
SPDIF
DVD_CLK /FLD_CS DVD_DATA
/MRESET
VCR_DATA
MPEG Decoder Sub-picture OSD Audio Decoder
X502 14.31818MHz X-TAL
To VCR BLOCK
VIDEO SIGNAL
DVW-7000