Sharp FO-CC500 Service Manual page 62

FO-CC500A
FO-K01A
[Signals for status recognition according to input signals]
Signal Name
RHS- H: The handset is in the on-hook state.
L: The handset is in the off-hook state.
CI Incoming call (CI) detection signal
[Other signals]
Signal Name
TEL IN Receiving signal from line or modem
SPOUT Speaker output signal
Transmission (DTMF) analog signal output
TXOUT
from modem
Reception (DTMF, others) analog signal input
RXIN
into modem
TELOUT Voice input to MODEM from handset.
(Example: SENDING/RECEIVING)
CONTROL PWB
IC12A
LIU PWB
IC101
2904
IC12B
HS RECEIVER
TEL MUTE
IC102
2904
IC101
2904
HS MIC
MIC MUTE
Q102
IC102
CML
2904 IC12D
LINE
CI
SPEAKER
Function
Function
CORDLESS
DSSIN
DTMF MUTE
RCVOL
1 0
0 1
IC10A IC10B
1
IC10C
0
DSSIN
RLYCONT
IC11
SIG MUTE
W-TONE
IC4
SP MUTE
IC7
IC5
2113 4051
VOLA
CML
VOLB
CI
VOLC
: FAX SENDING/RECEIVING
NO Signal Name (CNLIUA)
1
2
3
4
5
6
7
PWB
IC1:20438 IC2:MERLIN
DSSIN
INCOM
DSSOUT
AUDIOIN 1 GN
ADC GN
MICIN
PRE
ADC SCALER
LINEIN GN
PRESCALE
C
SETTING
ECHOATTN
SIDE TONE 1 GN
DAC GN
F DAC F
SPKOP
TXCTRL VOLUME 1 RF AUDIOIN 1 GN
SPKROUT GN
LINE ATTN
LINE
GPIO
RX AMP(MIC AMP)
MIC ENABLE
0,20,25,30dB 0dB
MIC GAIN LININ GAIN
SIGRX MICP
GAIN LPF
TELOUT LINEIN
LINE IN ENABLE
SPEAKER
OUT ENABLE
1,0
TX AMP
0,1
SP
DRIVER
SIGTX
0,0
SPKRP
1,1
RT LOOP
LINE OUT
0,0
ENABLE
SP AMP
1,0
LINE
1,1
DRIVER
LINEOUT
LNINSEL
MUTE,0,–6,–12dB
LINE OUT ATTENUATION
TONE
TEL MUTE SP MUTE VOLA
CML
RCVOL SIG MUTE VOLB
CI
DTMF MUTE W-TONE VOLC
Fig. 6
5 – 12
NO Signal Name (CNLIUA)
RHS- 8
DG 9
+24VL 10
11
MICMUTE
12
TELIN
TELMUTE 13
RXIN 14
IC5:MERLIN
ADC GN
AUDIOIN 1 GN
ADC
SIDE TONE 1 GN
POSTSCALE
SETTING
DAC GN
POST
F
DAC
SCALER
RF AUDIOIN 1 GN TXCTRL
VOLUME 1
TG1, TG1,
TG2 TG2
LINE ATTEN
AUX VOLUME
TG3
ADC
0,–4dB
ADC GAIN
DAC
0,6dB
DAC GAIN
MIC MUTE
RLYCONT SASTXD,SASRXD
IC3:SCE214V
TXOUT
CML
PIN
FILM
CI
HS-(N.C.)
TELOUT
CORDLESS
HANDSET PWB
IC8:20438
MIC IN
MIC
MIC GN
LINEIN GN
SPKOP
F
RECEIVER
SPKR OUT GN
EMJMIC
IC7
EMJSP
LINE O
EMJSP AMP
EMJSP MUTE
IC5:MERLIN
IC6
AUXDAC
SPEAKER
SP MUTE
SP MUTE
EMJSP MUTE