Shimadzu GCMS-QP2010 Series, Service Manual, Page: 106 / 168

106
5. Checking the AC voltage
The AC voltage is normal if 2 to 3V
P-P
is output from CP15[AC] when m/z500 is set. (It
fluctuates due to AC adjustment.)
6. Checking the pre-rod bias
The pre-rod bias is normal if JT1[PRE] is within pre-rod bias set value ± 10%.
RF GENE-A Block Diagram
V‑RF
X ‑1
PRE ROD
MAIN ROD
Rectification
POL‑RF
R24,R25
‑ +
Limit Switch
PRE
V‑PROD
M2(2/2)
CP15[AC]
M3(1/2)
M1(1/2),Q5,Q6
M1(2/2),Q3,4
M2(1/2)
M3(2/2)
52.5KHz
M6(2/2)
M6(1/2)
M7
CP11[A CLK]
M8
Q13,14,15
1.05MHz
Q11,12
M4(1/2)
XON‑RF
V‑AC
V‑RESO
RF1
V‑MROD
RF2
ERR‑RF
M4(2/2)
VR1[RF]
R27
R26
VR2[M/Z]
CP8[RF]
CP4[FB]
CP16[E AMP]
J4‑4
J4‑1
J4‑2
J4‑6
RF1
RF2
CP13[V]
CP10[U1]
CP9[U2]
OUT RF
CP14[MON]
X 1
X ‑1