technical service bulletin mobile radios · 2016. 12. 5. · 10-03-2011 a 5999-9937-2231 cemal...
TRANSCRIPT
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Midland Radio Corporation TSB-131108 90-2503 RFI.docx Page 1 of 1
Revision: Initial Release
Revision Date: November 8, 2013 Subject: RF Interference Issue: When PTT is activated the radio may reboot due to RF interference
to the 90-2503 control head. Various other anomalies have been reported also.
Corrective action: RF interference can be eliminated by removing C5 and adding:
2 ea. 1nf/0402/50V/10% 3 ea. 100pf/0402/50V/5% 1ea. 1nf/ 0603/50V/5%
See the following pages for proper modification
Technical Service Bulletin
TSB-131108 Models: 90-2503 Deluxe Control Head Used with SynTech III Mobile Radios
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4700
10-03-2011
ASSY PCB LARGE LCD AND KEYPAD VR 4700
TK BDK GENIS LCD VE TUS TAKIMI AT 4700
432
SHTM 10-03-2011
A
5999-9937-2231
CEMAL KIRLILARM.ERGUN / M.CAPARMUSTAFA ERGUN
WRITTEN AUTHORITY FROM THE PROPRIETORS.
PARTIES IN ANY FORM WHATEVER IS NOT PERMITTED WITHOUT
ALL RIGHTS RESERVED, REPRODUCTION OR ISSUE TO THIRD
HER HAKKI MAHFUZDUR. YAZILI IZIN OLMADAN DOKUMANLARIN
HICBIR KISMI KOPYA, KAYIT, BASIM VEYA DIGER HERHANGI
BIR SEKILDE COGALTILAMAZ VE YAYINLANAMAZ.
HC-ST-001 EK-17D
CHECKED
KONTROL
TANIM/DESCRIPTION
YENILENEN
SUPERSEDES
PREPARED
HAZIRLAYAN
DOKUMAN NO./DOCUMENT NO.
BOLUM
DEPT.
T.SF.
T.SH.
APPROVAL
ONAY
SH.
SF.
PREPARATION DT.
HAZIRLANIS TR.
L.C.
D.K.
FORM A 3
GECERLILIK TR.
EFECTIVITY DT.REV.
REV.PROJE/PROJECT:
HABERLESME VE BILGI TEKNOLOJILERI GRUBU
COMMUNICATION AND INFORMATION TECHNOLOGIES DIVISION
OZLEM
NOT/ NOTE
COMPONENTS SHOWN WITH `T_REF.NO` SHALL NOT BE MOUNTED.
`T_KONUM NO` BICIMINDE BELIRTILEN MALZEMELER TAKILMAYACAKTIR.110-2
1
ZD31
ZD30
T_R64
TR40
TP32
TP89
TP88
TP87
TP86
TP85
TP84
TP83
TP82
TP81
TP80
TP8
TP79
TP78
TP77
TP76
TP75
TP74
TP73
TP72
TP71
TP70
TP7
TP62
TP61
TP60
TP6
TP54
TP53
TP52
TP51
TP50
TP5
TP43
TP42
TP41
TP40
TP4
TP34
TP33
TP31
TP30
TP3
TP22
TP21
TP20
TP2
TP18
TP17 TP16
TP15
TP14
TP13
TP123
TP12
TP11
TP103
TP102
TP101
TP100
TP1
TH1
R85
R87R86
R84
R83
R82
T_R39
R81
R80
R61
R60
R73
R71
R56
R55
R74
R57
R52
R51
R50
R49
R72
R70
R54
R47
R46
R45
R44
R41
R75
R63
R62
R48
R42
R35
R53
R43
R37
R33
R36
R32
R77
R76
R34
R31
R30
R65
R40
R2
R1
J5
1
J4
J3
J2
IC71
IC7
IC6
IC5
IC42
IC41
IC2
IC11
IC1
DTR2
DTR7
DTR50
DTR101
DTR1
D70
D1
1
C59
C73
C72
C71
C69
C68
C67
C66
C65
C64
C63
C62
C60
C51
C49
C57
C42
C9
C8
C54
C52
C48
C46
C36
C29
C28
C27
C26
C25
C24
C23
C22
C17C15
C7
C6
C50
C5
C43
C41
C40
C4
C37
C35
C34
C33
C32
C31
C30
C3
C21
C20
C19
C18
C16
C14
C13
C12
C11
C101 C100
C10
C74
C70
C61
C58
C56
C55
C53
C47
C45
C44
C39
C38
C2
C1
T_BD70
BD72
BD71
7000
MERGUNPencil
MERGUNRectangle
MERGUNText BoxAdd_C5
MERGUNRectangle
MERGUNRectangle
MERGUNRectangle
MERGUNRectangle
MERGUNText BoxC84
MERGUNRectangle
MERGUNText BoxC83
MERGUNRectangle
MERGUNText BoxC80
MERGUNText BoxC81
MERGUNText BoxC82
MERGUNText BoxRemove_C5