Level Diagram - Kenwood NX-5400 Service Manual

LEVEL DIAGRAM

Receiver Section
5
RF (Center Frequency)
- 119dBm - 120dBm - 121dBm
ANT C544 L536 C540 Q530 C534 L530 C530
D350
D370 IC570
C352 D371
ANT
LPF SW
C563 L556 C560 Q550 C554 L550 C550
4
- 121dBm
Transmitter Section
3
AF (1kHz)
12.5mVrms 11.6mVrms
INTM_M IC906
Internal MIC(Main)
INTM_S
Internal MIC(Sub)
2
EMC
External MIC(Main)
SMIC
External MIC(Sub)
1
A B
- 123dBm - 109dBm - 110dBm - 112dBm
IC520
BPF BPF
C520 IC500 C501 XF670 C676 Q670 C670 Q660 C638
RFAMP
SW
BPF BPF
RFAMP
- 123dBm - 109dBm - 110dBm
To make measurements in the AF section, connect the AC level meter.
(ANT input: –53dBm, 1kHz FM, 3kHz DEV (Wide). SP output: 500mW@8ohm Load)
In the RF section, use 470pF coupling capacitor.
(The display shows the SSG input value required to obtain 12dB SINAD.)
AF
(1kHz)
180mVrms(793M)
190mVrms(825M)
IC902 IC702 IC902
Q160
C130 Q180
SSI SSI
VCO
CODEC CODEC
C
(No.RA016<Rev.001>) 2-6
1st IF (58.05MHz)
- 115dBm - 116dBm - 105dBm - 102dBm
BPF
MCF IFAMP IFAMP
RX PLL
RF (Center Frequency)
- 9.1dBm 1dBm - 15dBm 5 dBm
L186
C183 Q160 C188 L185 C300 IC300
Pre-
Doubler Coupler
Drive1
To PLL IC
D E
2-6 (No.RA016<Rev.001>)
AF (1kHz)
226mVp-p
IC702 IC902 C926
SSI
IF IC
IC600
C927
CODEC
C932
C933
7 dBm 17dBm 35.5dBm
C313 Q310 C322 Q320 C331 Q330 C347
Pre-
Drive Final
Drive2
F
IC904
Internal Speaker
IC905
External Speaker
3W
ANT
C352
ANT
LPF
SW
G