Marantz SR620 - Page 12

@ Functional Explanation of Terminals
Terminal Name Function Remarks
2 Crystal Oscillator terminal | Connect a 7.2 MHz crystal for reference With a built in feed-
3 XT frequency. back resistor.
4 FM | FM band designating input .
5 | MW WW band designatinginous Mutual reset type for selecting FM/MW/LW A
4 bands.
6 LW LW band designating input
Manual tuning mode de- ;
7 MANUAL signating input Mutual reset type for selecting manual and
- 4 auto search operating modes at time of A
8 AUTO Auto search tuning mode UP/DOWN tuning.
designating input
9 UP Up operating key input For UP/DOWN tuning with the push key 2
10 DOWN | DOWN operating key input | Connected.
1 STO Memory store command The preset memory is set to write state by A
| input this input.
12 M1 Beas anaes ete In combination with MC1 and MC2 inputs,
2 2 dasidnating inotit controls write/read of the internal 16 chan- A
19 M8 g ane nel preset memory.
20 Mc1 Used for setting the 16 channel preset
Niéinory contiulangut memory either to FM/AM (MW+LW) 8 Cc
1 Mc2. ¥ channel fixed system or FM+MW+LW 3
bands 16 channel random system.
= pais aa aes eee SOE
E é C.R terminal for oscillator that decides
| | =
oe pete, BMoscilatorxermina SCAN speed at time of AM search.
: oat C.R terminal for oscillator that decides
| =
23 OSC1 FM oscillator termina SCANpeediat time oF FM search.
4 0/5 FM 50 kHz output for 50 kHz step output in FM band in European D
Europe region. Become “’H” fevel at 50 kHz.
25 CK2 Transmits serial data and timing clock to be
6 CK1 Receiving frequency data sent to Receiving Frequency Digital Display D
+ serial outputs Driver TD6301AP. CK1 output also serves
27 DATA for pee sound transmission.
28 MUTE Muting signal output This terminal is placed at H”’ level at time D
of muting output.
Region Designating output | For designating Japan, U.S.A. and Europe.
: : Stops auto search by counting 1F450 kHz
- |
31 STOP3 AM-IF signal input aignalat tinear AM. F
re sete Oetaral When a ‘“’H” level signal is input under the
32 STOP2 " ae Page state where a ‘‘H’’ level signa! is being given E
mpe to STOP1 Input, stops Auto search.
33 STOP1 SCAN speed: slow Input When a “‘H”’ level signal is input, reduce E
P auto search scan speed to 1/2.
34 DO-2 pasa Ganiparstoroutsit 2 try state buffers are transmitted para- G
35 DO-1 | Ilelly from one phase comparator.
36 TEST Test Termirial When a ‘‘H”’ level signal is input, this B
terminal is placed at test mode.
37 EM FM Programmable counter | Output from prescaler TD6104P is E
us input connected.
Controls selection of 1/30 and 1/32 division
|
38 PSC Prescaler control output of prescaler TD6104P. D