
56
3) Control Mode Specification
!
Mute control (pin 54)
H: 1.8~5.0V, L: 0.0~1.2V
@
PB/EE control (pin 55)
H: 3.3~5.0V, L: 0.0~2.7V
#
REC/EE control (pin 56)
H: 1.8~5.0V, L: 0.0~1.2V
4) Operational Mode
!
EE mode
The audio signal devided by R219 and R220, is input to pin 57 of IC and then output to pin 59 through ALC circuit and Line Amp.
The signal passes C203 and devision circuit (R202, R203), and is input to REC Amp, and output to Line out too.
@
ALC
ALC point is fixed to –6dBv output inside of circuit, and ALC time can be adjusted by R201 and C202.
#
PB mode
The signal read by audio head, is input to pin 5 through high frequency peaking circuit composed of R211 and C201
(EQ: C201+C207). The input signal is finally output to pin 59 through EQ Amp and Line Amp.
Control Port
Mode
Function
Mute
Line SW
H
Mute
open
L
Except for Mute
close
Control Port
Mode
PB/EE
H
PB
L
EE
Control Port
Mode
REC/EE
H
REC
L
EE
Fig. 1 PB mode circuit
Summary of Contents for DV- K504N-SJ
Page 35: ...34 AC001 K584NZ SJ M K584NZ SG M only...
Page 36: ...35...
Page 37: ...36...
Page 38: ...37...
Page 39: ...38...
Page 60: ...59 ELECTRICAL ADJUSTMENTS Fig 1 Circuit Board Location...
Page 92: ...91 INTERCONNECT WIRING DIAGRAM K584N K484N K384N K284N...
Page 93: ...92 POWER SUPPLY SCHEMATIC DIAGRAM FREE VOLTAGE K584NY SJ M K584NZ SJ M K584NZ SG M...
Page 95: ...94 2HD HEAD AMP SCHEMATIC DIAGRAM K384N K284N K304N...
Page 96: ...95 4HD HEAD AMP SCHEMATIC DIAGRAM K584N K484N K504N...
Page 97: ...96 VIDEO AUDIO SCHEMATIC DIAGRAM K584N K484N K384N K284N K504N K304N...
Page 98: ...97 PIF INPUT SELECTOR SCHEMATIC DIAGRAM 9V USE K584NY SJ M K584NZ SJ M K584NZ SG M...
Page 100: ...99 TIMER SYSCON SCHEMATIC DIAGRAM K584N K484N K384N K284N K504N K304N...
Page 101: ...100 POWER SUPPLY BLOCK DIAGRAM FREE VOLTAGE K584NY SJ M K584NZ SJ M K584NZ SG M...
Page 103: ...102 2HD HEAD AMP BLOCK DIAGRAM K384N K284N K304N...
Page 104: ...103 4HD HEAD AMP BLOCK DIAGRAM K584N K484N K504N...
Page 105: ...104 VIDEO AUDIO BLOCK DIAGRAM K584N K484N K384N K284N K504N K304N...
Page 106: ...105 PIF INPUT SELECTOR BLOCK DIAGRAM K584N K484N K384N K284N K504N K304N...
Page 109: ...108 MAIN PCB 2HEAD 4HEAD...