HP 608E Operating And Service Manual page 70

Section V
Table 5-7. Mode1608E!F Troubleshooting Procedure
Model 608E!F
NO RF
OUT~UT
ICW POsmONI
FRONT
~ANEL ~OWER ~
AC LINE FUSE
~
CHECK -165, +225, +?5
lAM~ LIT FlGOOD
AND -6.3 YDC POWER
SU~~L1ES IN ORDER LISTED
m
-rYES
CHECK
~O'h{R
CORD AND LAMP
O~
RF
OUT~UT
NORMAL
"
DC D. 25
AM~
FUSE
~
CHECK
I~ULSE
St:T RF POSITION) F3GOOD
All +225 YDC
CIRCUITS
]m
1 YES
f"2.
CHECK DIFFERENTIAL
RF OUT~UT NORMAL AT J4
~
f"2.
CHECK
VOLTAGE NORMAL AT TPll
AM~L1FIER
Q2-Q3
RF OUT~UT NORMAL AT J5
OSCILLATOR V6
(CW POSITION)
CIRCUITS
ICW POSITIONI
ICW POSITIONI
CIRCUIT
[YES
lYES
]
' "
VOLTAGE NORMAL
~
CHECK
CHECK RF
OUT~lIT
BUFFER AMPLIFIER
V'll f' ! "...
CHECK ASSOCIATED
AT T~12
TRANSISTDRQ4 MmRMI
CIRCUIT NORMAL
COMPONENTS AND
ICW POSITION) CIRCUIT
CIRCUIT REPLACE AS NECESSARY
jm
!'<IWER AM~L1FIER
~
CHECK ASSOCIATED
V8 CIRCUIT NORMAL
COMPONENTS AND
REPLACE AS mCE·SSARY
1
m
ATTENUATOR I'!L
REPLACE
All GOOD ATTENUATOR
1
YES
DIODE iJ!9-,
REPLACE
CR? GOOD
CR2
jm
ALC CIRCUIT
iJ!9-,
CHECl(
BASE CIRCUIT
TPIO NORMAL
MJ
]",
VOLTAGES NORMAL
I!!Q..,
CHECl( ASSOCIATEO
FROM TPII COMPONENTS AND
THROUGH TPI4 REPLACE AS NECESSARY
5-40
•
)
J