Kenwood NX-3400 Service Manual page 80

LEVEL DIAGRAM
Receiver Section
5
-120.5dBm -121.5dBm -122.0dBm
D201
D207
ANT
D202
D203 C344
C246
ANT
4
LPF
SW
To make measurements in the AF section, connect the AC level meter.
(ANT input: –53dBm, 1kHz FM, 1.5kHz DEV (Narrow). SP output: 500mW@8ohm Load)
3
In the RF section, use 100pF coupling capacitor.
(The display shows the SSG input value required to obtain 12dB SINAD.)
Transmitter Section
AF (1kHz)
2
12.5mVrms
IC601
INTM_M
Internal MIC
CODEC
EMC
1
External MIC
A B
RF
-113.0dBm
-122.5dBm
C311
HPF
C334 IC303
Transceiver IC
HPF
C195
VCO
AF (1kHz)
78.9mVrms -5~5dBm
(Mod)
IC401
C348
VCO
MPU/ IC303
DSP
Transceiver IC
C
(No.RA070<Rev.001>) 2-10
AF (1kHz)
5.65Vp-p
IC601
IC401
MPU/DSP
CODEC
-5dBm ~ +5dBm
3dBm 12dBm
(Local)
C195
C218 IC202 C225
Pre-
Drive
D E
2-10 (No.RA070<Rev.001>)
CN604
CN605
Internal Speaker
External Speaker
RF
35dBm
22dBm 35dBm
D201
D207
D202
D203
Q201 C237 Q202 C227 C246
ANT
Drive
Final
SW
F
3W
ANT
LPF
G