Panasonic SA-HT990E, Service Manual

Page: 55 / 183

INITIAL/LOGO ABBREVIATIONS
X X
XALE
XAREQ
XCDROM
XCS
XCSYNC
XDS
XHSYNCO
XHINT
XI
XINT
XMW
XO
XRE
XSRMCE
XSRMOE
XSRMWE
XVCS
XVDS
XVSYNCO
X' TAL
X ADDRESS LATCH ENABLE
X AUDIO DATA REQUEST
X CD ROM CHIP SELECT
X CHIP SELECT
X COMPOSITE SYNC
X DATA STROBE
X HORIZONTAL SYNC OUTPUT
XH INTERRUPT REQUEST
X' TAL OSCILLATOR INPUT
X INTERRUPT
X MEMORY WRITE ENABLE
X' TAL OSCILLATOR OUTPUT
X READ ENABLE
X SRAM CHIP ENABLE
X SRAM OUTPUT ENABLE
X SRAM WRITE ENABLE
X V-DEC CHIP SELECT
X V-DEC CONTROL BUS
STROBE
X VERTICAL SYNC OUTPUT
13. Voltage and Waveform Chart
13.1. DVD Module P.C.B.
13.2. Main P.C.B.
13.3. FL P.C.B., Scart P.C.B., Tray Loading P.C.B.
13.4. Waveform Chart
14. Illustration of IC’s, Transistors and Diodes
15. Wiring Connection Diagram
16. Block Diagram
17. Schematic Notes
- This schematic diagram may be modified at any time with the
development of new technology.
Notes:
S901:
55