Daewoo TVZ 1321 Service Manual page 65

5. Terminal Function Table
Terminal No. Description
1 HEAD EQ
2 PB IN
3 REC HSW
4 GND
5 RIPPLE FILTER
6 PB NFB
7 Vcc
8 PB EQ
9 EQ CTRL
10 PB OUT
11 PB/TU/EE CTRL
12 PB LINE IN
13 ALC LEVEL
14 ALC FILTER
15 BIAS
16 LINE IN
17 MUTE CTRL
18 TUNER IN
19 REC NFB
20 GND
21 REC OUT
22 BF OUT
23 REC EQ
24 REC/EE CTRL
NOTE :
• Terminal form abbreviations : EE : emitter follower, P-P : push pull, B : base, C : collector.
• All figures are measured at Vcc = 9V at no signal condition.
• All figures show standard values.
Function
Switch for selecting the
head resonance capacitor
PB AMP input/PB side head switch
REC side high voltage head switch
GND (for PB AMP, Head switch)
Ripple filter
PB AMP feedback
Vcc
PB EQ selecting switch
EQ control
EQ AMP output
PB/TU/EE control
Line input for PB
ALC Level setting terminal
Terminal for ALC filter with time
constant
(Setting attack and recovery time)
Bias
Line input
MUTE control
Tuner input
REC AMP feedback
GND
REC AMP output
Line AMP OUTPUT
REC EQ selecting switch
REC/EE control
63
Terminal
Terminal Form
Voltage
0.0V 220kΩ/27Ω(ON)
3.4V REC : 120kΩ
REC : 11Ω(ON)
0.0V REC : 11Ω(ON)
REC : OPEN
0.0V –
9.0V 10kΩ(Vcc)
3.5V B(NPN)
9.0V –
3.5V 55Ω(ON)/OPEN
–
3.5V EE
–
4.1V 120kΩ
– B(PNP)
PB : 0.0V EE(NPN)~220Ω
PB : vari-
able
4.1V EE(NPN)
Isink = 670µA
4.1V 120kΩ
–
4.1V 120kΩ
4.1V B(NPN)
0.0V –
4.1V EE(P-P)
4.1V EE(P-P)
0.0V 100kΩ/22Ω(ON)
–