Ncn6129C, Ncn6138A, Ncn6140A/B, Ncn/Pmcn6140C, Ncn6141A, Ncn6145A/C, Ncn6146A, Ntn7089C Controller Board Power Section Schematic Diagram - Motorola HT-1000 Service Manual

Mtx series
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SB+
Vcc Regulator
SB+
6.8Vdc
5Vdc UNSQ
0Vdc SQ
AUPA_EN
RX_AUDIO
1.1Vdc
900mVpk-pk : MAX AUDIO SETTING
250mVpk-pk : RATED AUDIO SETTING
EXT_SPKR_SEL
0Vdc EXT SPK SEL
5Vdc INT SPK SEL
5V_REG
5V Regulator
8
1
INPUT
OUTPUT
7
5
FEEDBACK
ERROR
3
2
SHUTDOWN
SENSE
6
C725
5V_TAP
0.1uF
U709
C724
0.1uF
4
Vcc
5.0Vdc
Q702
C763
C765
4.7uF
SB+
.01uF
C761
C762
.01uF
10uF
20
2
EN_AMP
AMP2OUT
17
4
EN_INT_MIC
AMP3OUT
15
EN_MIC
8
U706
AMPIN
10
9
PLIN
AUDIO PA
PLOUT
14
11
FREQCOMP
REGOUT
13
16
REG
MICAMPOUT
18
INT_MIC_IN
19
6
EXT_MIC_IN
BOOTCAPC1
21
23
EXT_INT_SPKR
BOOTCAPC2
24
22
INT_SPKR
BOOTCAPC3
C764
4700pF
NCN6129C, NCN6138A, NCN6140A/B, NCN/PMCN6140C, NCN6141A, NCN6145A/C, NCN6146A, NTN7089C
CONTROLLER BOARD POWER SECTION SCHEMATIC DIAGRAM
ERROR
C722
C723
10uF
0.1uF
C769
1uF
EXT SPK
3.8Vdc UNSQ
C770
RATED 5.5Vpk-pk
0.33uF
AUDIO OUTPUT MAX: 6.5Vpk-pk
C771
1uF
C772
0.33uF
RATED 5.5Vpk-pk
AUDIO OUTPUT MAX: 6.5Vpk-pk
C773
3.8Vdc UNSQ
1uF
1800mVrms, RATED AUDIO OUTPUT
L704
390nH
EXT_SPKR
C767
100pF
L706
390nH
SPKRCOM
C766
100pF
L705
390nH
INT_SPKR
C768
100pF
63B81097C12-O
95

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