Kenwood DP-1100 B Service Manual page 109

D P - 1 1 0 0 B II
2. IC OPERATION OF EACH CIRCUIT AND PIN DESCRIPTION
Lamp name
Display section
1 2
8-digit number display division. Normally, displays the address data during play. The respective pairs of 2 digits from the
left show TNO, X, MIN, and SEC in order. However, when the tray is opened, all digits go off. In addition, when a
numeral key or the M-READ key is operated, TNO and X (X may not be displayed) alone are displayed, and MIN and SEC
are blanked. Then, during search, TNO and X (X may not be displayed) blink, and MIN and SEC go off. The display for­
mat is shown below:
O
N
U L J
0 1
Fig. 2 - 4 - 1 C Simplified diagram of key matrix
Main function
C " C :
~ i ~/ C J Z ! 7 7
/ /__/ _D O /._./
l
2 3 4 5 6
Table 2 - 4 - 1 C
Fig. 2 - 4 - 1 D
O
C D
_D
C D
7 8 9