Frame Schematic Diagram; Circuit Boards Location - IBM 6551-T3N Service Manual

5-2. FRAME SCHEMATIC DIAGRAM

CN309
8P
WHT
:S-MICRO
TO
GND 1
CN2001 CRT SHIELD
GND 2
8P
CN1002
WHT
3 1 KEY SCAN 8P
KEY SCAN
:S-MICRO
WHT
LED1 4 2 LED1
H :S-MICRO
LED2 LED2
5 3
GND 6 4 GND
CN1004
USER
6P
+5V 7 5 +5V
WHT
INPUT SEL INPUT SEL
8 6 :S-MICRO
CONTROL
DGC
1
CN601
2 NC
4P
DGC
WHT
3 NC
:VH
DGC
4
CN600
1 AC L 3P
WHT
AC IN 2 NC
:VH
3 AC H
CN313
9P
A :XA
VIDEO AMP,
RGB OUT
CN310
4P
WHT
:XA
CN306
CN311
CN305
4P 8P
7P
WHT WHT CN301
WHT CPU GND1
:S-MICRO
:S-MICRO 2P
:S-MICRO
FOCUS1 FOCUS2
(FV) (FC)
CN1003 CN510
CN603
12P
1P
7P
WHT
:S-MICRO
D
µ-COM,CY,DEFLECTION,
POWER,H DEF,HV
CN1005
15P
CN802
15P
N
(DSP)
5-5
B GND1 1
BLUE1 2
G GND1
3
GREEN1 4
R GND1 5 VIDEO CABLE
RED1
6
GND 7
RCV
VD1 8
HD1 9
H
NC
1
DDCSCL 2
VIDEO CABLE
DDCSDA 3
KB
4
HV
CN501 H DY + 1
6P
H DY +
2
H DY
H DY - 3
H DY - 4
V DY - 5
V DY + 6 V DY
CN702
ROTATION+ 1
3P
NC 2 ROTATION
WHT
:S-MICRO
ROTATION- 3
CN701
CY4- 8
8P
RED CY4+ 7
:S-MICRO
CY3-
6
CY3+ 5
CY2- 4
CY2+
3
CY1- 2
CY1+ 1
CN1001
D GND 1
4P
WHT
STBY+5V 2
:S-MICRO
TO ECS
RXD 3
TXD 4
CN1006
15P
B-SS3490<U/C>-KESSENZU-EPS05
CN801
15P

5-3. CIRCUIT BOARDS LOCATION

PICUTURE
TUBE
H
KR G2
G4
KG G1 GM
HV
N
5-6
A
D