Kenwood KRC-999II Service Manual page 27

KRC-999I1
SEMICONDUCTOR DATA
2-d) Fader
When Fader is selected with data bits 1 to 4 (A1 to Ad),
data bits 5 to 8 (D1 to D4) defines the fader VR data for
attenuating the front or rear-volume. Only one VR is used
for L and R, and whether the attenuation is applied to the
e Exptanation of each VR block
The VRs consist of diffused resistor arrays and analog
switches.
1) Volume block, Loudness
front or rear is selected by data bit 12 (D8). The fader VR
LD1
Di | D2 | D3 | D4 BO ae
L L L L 0dB
H L L L = 2dB
<a
L H L L — 4dB
H H L \s — 6dB
L L H L — 8dB
H L H L — 10dB
L H H L — 12dB
H H H L — 14dB
L L L H — 16dB
i When Loudness isON = Analog switch AS1: ON
H L L H — 18dB Analog switch AS2: OF F
Lk H L H — 20dB When Loudness is OFF Analog switch AS1: OFF
H H L H — 26dB Analog switch AS2: ON
L L H H — 36dB ASND
1/33
H L H H — 465dB oO 4
L H H H — 60dB
Analog SW
H H H H — oodB
2) Tone control (Bass, Treble) block
* . TONE-IN TRBL-COM
3) Code bits (bits 13~ 16) 8/26 13/21
O
|
Data bits 13 to 16 are the code bits for the TC9188F.
Data having different code from the following is not ac-
cepted.
BASS1
9/25
Data bit
BASS2
11/23
Analog SW
27
BASS-COM TONE-OUT
10/24 12/22