Key & Control Boards - Philips LX7000SA Service Manual

KEY & CONTROL BOARDS
TABLE OF CONTENTS
LCD Module - Block diagram .......................................... 6-1
LCD Module - Interface Pin Function .............................. 6-1
Top Key Part - Layout & Circuit diagram ......................... 6-2
SACD LED Part - Layout & Circuit diagram .................... 6-3
Volume & IR Part - Component & Chip layout ................ 6-4
Volume & IR Part - Circuit diagram ................................. 6-5
Headphone Part - Layout & Circuit diagram ................... 6-6
Power ON/OFF Part - Layout & Circuit diagram ............. 6-6
Electrical parts list ............................................................ 6-7
6-1
LCD MODULE
BLOCK DIAGRAM
LCD PANEL
48 * 15 DOTS with 38 ICONS
S0
IC AX6120
INTERFACE
INTERFACE PIN FUNCTION
NO SYMBOL I/O
1. DB0 I/O
2. DB1 I/O
3. DB2 I/O
4. DB3 I/O
5. DB4 I/O
6. DB5 I/O
7. DB6 I/O
8. DB7 I/O
9. LED+ P
10. RW I
11. E I
12. A0 I
13. RESET I
14. VSS (LED-) P
15. VDD P
6-1
C0
. .
. .
. .
. .
.
C14
C15
S49
C15
C14
. .
. .
. .
. .
.
C0
LED
FUNCTION
Data Bus
Data Bus
Data Bus
Data Bus
Data Bus
Data Bus
Data Bus
Data Bus
Power Supply for LED
Read/Write Execution Control
Read/Write Start Signal
Register Select input
Reset Input Pin
GND
Power Supply for Logic