Service Manual

1
TC-610/620 Level Diagram
Q101
2SK508NV
1W(BTL)200mVrms-120dBm -103dBm -67dBm
-69dBm
250mVrms-98dBm-108dBm-104dBm-122dBm
LPF
IFAmp 1
AF HPF
Volume
MIX2
2ndIF
BPF
IFAmp 2
DET
de-emphasis
23 25 29
44
AF mute
AN29160
5221
16mVrms
-10dBm
Q102
1
23
D104
37dBm39dBm
Q400 2SC5108
1
23
27dBm
LPF
2SK3475
Q402
2
13
15dBm-8dBm450mVrms
stimulator power AMP
Mic Amp
Mic Mute
AF HPF
LMT
SF Amp
AN29160
5140
MICROPHONE
47K
VR200
C112
AF AMP
TDA2822
150mVrms -26dBm
D400
D500
SW
Q401 2SK4988
1
23
-45dBm
Q104
1
23
16Ω IW
Q500
AT41511
RQA0002
Q403
2
13
attenuator
step1to23
buffer
Q501
3SK318
3
2
41
Q100
2SK508NV
BPF BPF
38.85M
C
3dBm
C130 C141
VCO
C400
C405
C402
C429
C412
TUNE BPF 1stIF BPFRF MIXERTUNE BPF LNA
TX PART
RX PART
RFAF
RF AFIF