Marantz SD9000 - Page 17

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5. Programming
Fig. 2.4 shows the program signal input circuit. The
switches in the matrix circuit, program memory and
control signal output are controlled by the micro-
computer.
This section explains the operating conditions of the
program setting switches and related functions.
The program setting switches have various functions, so
special care should be taken when checking for circuit
trouble or misoperation.
5.1 Matrix keys
Here, the functions of the program setting matrix keys
are explained. For the functions of the 3 switches
(COUNTER MEMORY, SELECTOR, PROGRAM
MODE) at the lower part of the program setting unit,
refer to Section 5-2 and succeeding sections.
Fig. 5-1 Program setting unit
bliss ges
SiSieterr) a
START SKIP paote PM RAM SAM
° °
ie tis
START STOP MEMORY
© COUNTER? CALL
Ce a
MEMORY
CE/RESET
IOQ
STOP COUNTERg ev cK . . RE-
e e
Play oO" TIMER *cLock FEAT ©)
‘ oO” O
Binp ©).
COUNTER MEMORY SELECTOR PROGRAM MODE
(1) START
This is a program mode start command key.
When the PROGRAM MODE switch is in the SINGLE
or REPEAT position and the COUNTER MEMORY
switch is in the PLAY/STOP or PLAY/REPEAT posi-
tion, press the START key and the deck is set to the
REW mode regardless of the position of the SELECTOR
switch and the information stored in the memory.
(2) SKIP
This key is used to shift from one program to another
during program mode operation.
When the PROGRAM MODE switch is in the SINGLE
position and the last designated program is being played
back, pressing the SKIP key causes the tape deck to
enter the STOP mode.
(3) PRG PAUSE
This is the PROGRAM PAUSE key. Press this key dur-
ing the program mode operation and the tape stops
briefly. To resume tape playback, press the same key
again.
18
(4) PM
This key is used to indicate the PM (afternoon) sign on
the display. It functions only when the SELECTOR
switch is in the CLOCK SET position. By pressing the
PM key, the display indicates as shown in Fig. 5.2.
Fig.
5-2
Indication
when
PM
key
is
pressed
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so OA i"
FLow O
(5) RAM, SAM
These are RANDOM ACCESS MEMORY key and
SEQUENTIAL ACCESS MEMORY key, and are used
for memorizing, executing and reading programs.
When the RAM key is used, the programs are executed
in the order in which they are arranged. When the SAM
key is used, the programs are executed in numerical
order. If the programs are arranged in the order of 4, 5,
3, 2 and 1, they are executed (readout) by the memory
as shown in Table below.
a
Read-in Read-out, Execution
Sequence
Sequence
RAM | 4-—5—3-2-1
1-2-3-4-5
rn a
The LEDs on the RAM and SAM keys indicate the
memory being executed. They will light with the PRO-
GRAM MODE switch in the SINGLE or REPEAT
position.
(6) COUNTER/START, STOP
This is used to set the start and stop positions for
counter, memory and play operations (STOP, REPEAT).